The Long Now of Manufacturing

The clock here depends heavily on where you start. The geared-fan concept traces to NASA Advanced Ducted Propulsor (ADP) wind-tunnel research in the late 1980s–1997 and the abandoned PW8000 (~1998). The actual production GTF program launched around 2001 using a clean-sheet core co-developed with MTU. First demonstrator ground run was November 2007 at West Palm Beach; first flight testing on a Boeing 747SP and Airbus A340 testbed followed in 2008. The first variant (PW1500G for the Bombardier CSeries/A220) earned Transport Canada type certification on February 20, 2013, and the PW1100G for the A320neo achieved FAA certification December 19, 2014. Entry into service was January 2016 (Lufthansa A320neo). So program-launch-to-EIS is roughly 15 years; first-run-to-EIS about 8–9 years; first-cert-to-EIS about 3 years.

1. late 1980s–~2000 (10+ years of intermittent technology work)Concept / NASA ADP research and PW8000 precursor
2. ~2001 to Nov 2007 (~6 years)Production GTF program launch to first demonstrator ground run
3. Nov 2007 to Feb 2013 (~5 years)First ground run to first variant certification (PW1500G)
4. 2013/2014 to Jan 2016 (~2-3 years)First certification to entry into service (A320neo)
5. several additional years (durability fixes well past 2016)Entry into service to field maturity

GE announced studies of a more-efficient GE90 derivative, the GE9X, in February 2012. The first engine to test (FETT) completed its first run in April 2016; the engine first flew on GE's Boeing 747-400 flying testbed on March 13, 2018. Certification flight testing on the 777X aircraft began January 25, 2020. The GE9X received its FAA type certificate on September 25, 2020, after the cert program accumulated just under 5,000 hours and 8,000 cycles. Entry into service, however, is gated by the Boeing 777-9 airframe, which has slipped repeatedly; EIS is now targeted around 2026. That makes concept-to-cert about 8.5 years, but concept-to-EIS roughly 14 years because the engine sat certified for ~6 years waiting on the aircraft. GE has continued running engines to build maturity, accumulating on the order of 17,000+ hours/27,000+ cycles to reach field maturity at service entry.

1. Feb 2012 to Apr 2016 (~4 years)Concept/announcement to first engine to test (FETT) run
2. Apr 2016 to Mar 2018 (~2 years)FETT run to first flight on 747 flying testbed
3. Mar 2018 to Sep 2020 (~2.5 years)Testbed flight + 777X flight test to FAA type certification
4. Sep 2020 to ~2026 (~6 years of waiting, used for maturity build-up)Certification to entry into service (gated by Boeing 777-9)

UltraFan illustrates the very front end of the clock: a clean-sheet geared, variable-pitch-fan architecture still in the demonstrator phase, not yet a product. Rolls-Royce unveiled the UltraFan concept publicly around 2014. The full-scale technology demonstrator's build was completed in December 2022, and it achieved first run and ran to maximum power (~85,000 lbf thrust class) during 2023, accumulating roughly 70 hours before that test campaign concluded. Rolls-Royce is resuming demonstrator ground testing in early 2026 and is pursuing a narrowbody-sized derivative (UltraFan 30) targeted to run by 2028. There is no committed product program or certified engine yet; entry into service is projected for the 2030s, with flight testing expected before 2030, and timing tied to an airframer launching a new aircraft. This shows that demonstrator-to-product can itself add a decade after a successful technology run.

1. ~2014 to Dec 2022 (~8 years of technology development)Concept unveiled to demonstrator build complete
2. Dec 2022 to 2023 (~1 year)Build complete to first run / run to max power
3. 2023 to early 2026Demonstrator test pause to resumed ground testing
4. flight test before 2030; EIS projected 2030s (gated by an airframer launching a new aircraft)Demonstrator to product launch / flight test to entry into service

Boeing formally launched the 787 program on 26 April 2004 with a 50-aircraft order from ANA, after defining the conventional 7E7 concept in January 2003 (replacing the abandoned Sonic Cruiser). Despite a planned 2008 entry into service, supply-chain and engineering problems delayed first flight to 15 December 2009 and first delivery to ANA to 26 September 2011 -- about three years late. The clock from formal program launch to first delivery was roughly 7.5 years.

1. Jan 2003 - Apr 2004 (~1.3 yr)Concept definition (7E7 announced)
2. Apr 2004 - Jul 2007 (~3.2 yr)Program launch to rollout
3. Jul 2007 - Dec 2009 (~2.5 yr)Rollout to first flight (delays)
4. Dec 2009 - Sep/Oct 2011 (~1.8 yr)First flight to first delivery/EIS
5. 2011 - ~2014 (~3 yr)EIS to mature fleet (post-battery grounding, ramp)

The 'A350' label first appeared in 2004 as an A330-derivative concept (shareholder authorisation 10 Dec 2004), but customers rejected it. Airbus redesigned it as the clean-sheet, wider-fuselage A350 XWB, branded at Farnborough in July 2006 and given board industrial launch on 1 December 2006. First flight followed on 14 June 2013, EASA type certification on 30 September 2014, and first delivery to Qatar Airways on 22 December 2014, with entry into service on 15 January 2015. The true clean-sheet clock (XWB launch to delivery) was about 8 years.

1. Sep 2004 - 2006 (rejected)Original A350 (A330-derivative) concept
2. 1 Dec 2006XWB clean-sheet launch (board approval)
3. Dec 2006 - Jun 2013 (~6.5 yr)Launch to first flight
4. Jun 2013 - Sep 2014 (~1.3 yr)First flight to certification
5. Sep 2014 - Dec 2014 / Jan 2015 (~3 mo)Certification to first delivery/EIS
6. 2015 - ~2018 (~3 yr)EIS to mature/full-family fleet (-1000 EIS 2018)

Boeing formally launched the 777X at the Dubai Airshow on 17 November 2013, targeting entry into service around 2020. Rollout occurred 13 March 2019 and first flight on 25 January 2020, but engine (GE9X) issues, a post-737 MAX tightening of certification standards, and a 2024 cracked thrust-link discovery repeatedly pushed the schedule. First delivery is now targeted for 2027 -- roughly a 7-year delay and about $15 billion in program charges -- making the launch-to-delivery span about 13-14 years versus an originally intended ~7.

1. 17 Nov 2013Program launch (Dubai Airshow)
2. Nov 2013 - Mar 2019 (~5.3 yr)Launch to rollout
3. Mar 2019 - Jan 2020 (~0.9 yr)Rollout to first flight
4. Jan 2020 - 2026/2027 target (~6-7 yr)First flight to certification/delivery (heavily delayed)
5. Not yet reached (EIS targeted 2027)Delivery to mature fleet

The JSF effort grew out of 1993 JAST/CALF concept studies; the X-35 vs X-32 Concept Demonstration contracts were awarded Nov 1996; Lockheed won the SDD (full development) contract on 26 Oct 2001; the production-representative F-35A first flew 15 Dec 2006; and the first variant (F-35B, USMC) reached IOC on 31 July 2015, with F-35A (USAF) IOC on 2 Aug 2016 and F-35C (USN) on 28 Feb 2019. Measuring from program launch (SDD award 2001) to first IOC (2015) is ~14 years; from first flight (2006) to IOC is ~9 years.

1. 1993-1996 (~3 yrs)Concept studies (JAST/CALF) to Concept Demonstration contract award
2. 1996-2001 (~5 yrs)Concept Demonstration / X-35 fly-off to SDD (development) contract win
3. 2001-2006 (~5 yrs)SDD / development to first flight of production-config F-35A
4. 2006-2015 (~9 yrs)First flight through flight test to first IOC (F-35B)

The Advanced Tactical Fighter (ATF) requirement emerged in the early 1980s. A 54-month Dem/Val phase produced the YF-22, which first flew 29 Sep 1990; the Lockheed team won the ATF competition on 23 Apr 1991, launching Engineering & Manufacturing Development (EMD). The EMD/production-representative F-22 first flew 7 Sep 1997, and the F-22A reached IOC on 15 Dec 2005. From program launch (EMD award 1991) to IOC is ~14.5 years; from first EMD-jet flight (1997) to IOC is ~8 years.

1. early 1980s-1986 (~5+ yrs)ATF concept/requirement studies to Dem/Val (start)
2. 1986-1991 (~4.5 yrs; 54-month Dem/Val)Demonstration/Validation (YF-22 build & fly-off) to source selection
3. 1991-1997 (~6 yrs)EMD (development) to first EMD-aircraft flight
4. 1997-2005 (~8 yrs)First flight through flight/operational test to IOC

The Air Force released the LRS-B RFP in July 2014 and awarded the development (EMD) contract to Northrop Grumman in October 2015 (after a GAO protest was resolved in 2016). The first B-21 flew on 10 November 2023 at Plant 42, Palmdale. A low-rate initial production (LRIP) contract followed in January 2024. First delivery to Ellsworth AFB and entry into operational service are projected for ~2027-2028, implying ~12-13 years from contract award to fielding and ~4-5 years from first flight to operational service. Note: an exact official IOC date has not been publicly declared (the program is heavily classified).

1. 2014-2015 (~1.5 yrs)LRS-B RFP to development (EMD) contract award
2. 2015-2023 (~8 yrs)EMD / development to first flight
3. 2023-2024 (~2 months)First flight to LRIP contract
4. 2023-2027/2028 (~4-5 yrs, projected)Flight test to first delivery / operational service

NGAD traces to the DARPA Air Dominance Initiative study (March 2014) and the Aerospace Innovation Initiative (AII) launched ~2015, which flew full-scale technology demonstrator X-planes from ~2020 (three flown by 2023). The EMD (development) contract was awarded to Boeing on 21 March 2025 with the designation F-47. The Air Force targets first flight in 2028 and operational capability around 2029-early 2030s, though senior lawmakers and analysts caution IOC could slip to the mid-2030s. From concept (2014-2015) to projected IOC (~2029-2035) is roughly 15-20 years; from EMD award (2025) to projected IOC is ~4-10 years.

1. 2014-2015 (~1 yr)DARPA concept study to AII X-plane demonstrator program launch
2. 2015-2020 (~5 yrs)Demonstrator development to first demonstrator flight
3. 2020-2025 (~5 yrs)Demonstrator flights to F-47 EMD contract award (Boeing)
4. 2025-2029+ (~4-10 yrs, projected)EMD to projected first flight (2028) and IOC (~2029-2030s)

Extreme ultraviolet (EUV) lithography went from foundational research to volume chip production over roughly two to two-and-a-half decades. Foundational research began in the mid-1980s when Japanese researcher Hiroo Kinoshita projected the first EUV images (building on earlier Russian multilayer-mirror work). ASML formally launched its EUV program in 1997, shipped the first alpha-demo prototypes in 2006, shipped a pre-production NXE:3100 to Samsung in 2010, delivered its first production-capable systems around 2013, and EUV finally entered high-volume manufacturing in 2019 at the 7nm logic node (the first EUV-made commercial chip shipped in Samsung's Galaxy Note10 that year). ASML invested more than 6 billion euros in EUV R&D over ~17 years and required ~$6 billion in equity from TSMC, Samsung, and Intel in 2012 to finish the program.

1. mid-1980s onwardFoundational research (first EUV images, multilayer mirrors)
2. 1997ASML EUV program launch
3. ~9 years (1997-2006)Program launch to first alpha-demo prototypes (shipped to imec and SUNY Albany)
4. ~4 years (2006-2010)Alpha-demo to pre-production NXE:3100 shipped to Samsung
5. ~3 years (2010-2013)Pre-production to first production systems
6. ~6 years (2013-2019)Production systems to high-volume manufacturing (7nm node)

TSMC's first Arizona fabrication facility (Fab 1) measures the build clock from site groundbreaking to volume output. Construction began in April 2021; the 'first tool-in' (equipment move-in) occurred in December 2022; and the fab reached high-volume production of N4 (4nm-class) chips in Q4 2024, with TSMC stating in January 2025 that yields were comparable to its Taiwan fabs. That is roughly three and a half years from groundbreaking to volume production for a leading-edge fab. The later Arizona fabs show similar spans: Fab 2 (N3) broke ground in 2022/2023 with equipment move-in 2026 and volume production targeted for 2027 (pulled forward a year by AI demand), and Fab 3 (N2/A16) broke ground in April 2025 targeting production by the end of the decade.

1. April 2021Groundbreaking / construction start
2. ~1.7 years (April 2021 - December 2022)Construction shell to first tool-in (equipment move-in)
3. ~2 years (December 2022 - Q4 2024)Tool install and yield qualification ramp
4. Q4 2024 (~3.5 years total from groundbreaking)High-volume N4 production reached

The canonical '10-15 years and ~$2.6 billion' figure is a composite of two distinct authoritative sources, not one. The TIME figure comes from PhRMA and the FDA, who describe the path from initial discovery/target identification through FDA approval as averaging 10-15 years (PhRMA most often says 'at least 10 years on average'). The COST figure ($2.6B, in 2013 dollars) comes from the 2014 Tufts Center for the Study of Drug Development study led by Joseph DiMasi, based on 106 randomly selected drugs from 10 companies first tested in humans 1995-2007. The clock here measures from earliest discovery research to first FDA marketing approval; it does NOT measure a single program's stopwatch but a statistical average across many candidates including the cost of failures.

1. 3-6 yearsDrug discovery / target ID & lead optimization
2. 1-3 years (often counted within early development)Preclinical (in vitro + animal toxicology, IND-enabling)
3. 1-2 yearsPhase I clinical (safety, dose, PK; 20-100 subjects)
4. ~2 yearsPhase II clinical (efficacy, side effects; up to several hundred patients)
5. 1-4 yearsPhase III clinical (confirmatory efficacy/safety; thousands of patients)
6. ~6 months (priority) to ~12 months (standard)FDA review (NDA/BLA submission to approval)
7. 6-7 yearsClinical trials combined (Phase I-III)

Pembrolizumab was invented by Organon scientists around 2006 (Organon was absorbed into Schering-Plough, then Merck via the 2009 merger). Clinical development (KEYNOTE-001) began in 2010-2011, it received FDA Breakthrough Therapy designation, and won accelerated approval for advanced melanoma in September 2014. The 'clock' here runs from molecule invention (2006) to first marketing approval (2014). It illustrates a compressed timeline: ~8 years rather than 10-15, achieved via an adaptive trial design and expedited regulatory pathways — a deliberately faster-than-typical case.

1. ~2006Discovery / invention (at Organon)
2. 2006-2010Corporate transitions, dormancy, IND prep (Schering-Plough then Merck)
3. 2010/2011-2014Clinical development KEYNOTE-001 (adaptive Phase I/II/III)
4. 2013-Sept 2014Breakthrough Therapy designation to accelerated approval

Sofosbuvir was discovered in 2007 by Michael Sofia at Pharmasset. Animal toxicity began May 2008, Phase I in March 2009, Phase II in 2010, and Phase III after Gilead acquired Pharmasset in January 2012 for $11.2 billion. Gilead filed the NDA in April 2013, got Breakthrough Therapy designation in October 2013, and the FDA approved Sovaldi on December 6, 2013. The clock here runs from chemical discovery (2007) to FDA approval (2013) — roughly 6-7 years, one of the fastest modern timelines for a novel small molecule.

1. 2007Discovery (Pharmasset, Michael Sofia)
2. 2008Preclinical / animal toxicology
3. 2009Phase I
4. 2010-2011Phase II
5. 2012-2013Phase III (post-Gilead acquisition Jan 2012)
6. Apr 2013 - Dec 6, 2013NDA filing to FDA approval (Breakthrough Therapy)

The first new US nuclear units in decades. Southern Nuclear filed for an Early Site Permit in August 2006 and a Combined Construction and Operating License (COL) in March 2008; the NRC issued the COL in 2012 and safety-related concrete pouring (the formal 'construction start') began in March 2013. Unit 3 connected to the grid on 31 March 2023 and reached commercial operation 31 July 2023; Unit 4 connected 6 March 2024 and entered commercial operation 29 April 2024. From COL application to both units operational was ~16 years; the official 'construction' clock (first nuclear concrete to commercial operation) was ~10-11 years per unit.

1. ~4-6 yearsEarly site permit / licensing application (ESP 2006, COL 2008) to COL issuance (2012)
2. ~10 yearsFirst nuclear concrete (Mar 2013) to Unit 3 grid connection (Mar 2023)
3. ~4 monthsUnit 3 grid connection to commercial operation (Mar-Jul 2023)
4. ~10.5 yearsUnit 4 first concrete (Nov 2013) to commercial operation (Apr 2024)

Europe's first EPR. The construction license was granted and first concrete poured in 2005, with commercial operation originally promised for ~2009-2010. Instead, OL3 was connected to the grid only on 12 March 2022 and began regular commercial operation on 1 May 2023 — about 18 years after construction start and roughly 13 years late. Construction alone, planned at 56 months, took ~199 months (about 3.5x). The underlying EPR design effort began with Framatome/Siemens forming Nuclear Power International in 1989, so the design-concept-to-first-European-operation arc spans more than three decades.

1. ~8 years (design line)EPR conceptual/basic design (NPI founded 1989; basic design report 1997)
2. ~17 yearsConstruction start / first concrete (2005) to grid connection (Mar 2022)
3. ~14 monthsGrid connection (Mar 2022) to regular commercial operation (May 2023)

France's first EPR. Construction (first concrete) began 4 December 2007 with EDF promising commercial operation in 2012 after a planned 54-month build for ~€3.3B. The reactor was connected to the grid only on 21 December 2024, reached full power in December 2025, and entered commercial operation in May 2026 — more than 12 years late, with costs rising more than fourfold to at least €13.2B (and ~€19-24B including financing per the French Court of Auditors). Construction-start to grid connection was ~17 years.

1. ~17 yearsFirst concrete (Dec 2007) to grid connection (Dec 2024)
2. ~12 monthsGrid connection (Dec 2024) to full power (Dec 2025)
3. ~5 monthsFull power to commercial operation (May 2026)

The leading US SMR design illustrates how long even the design/licensing clock runs for a new reactor type. The technology traces to DOE-funded MASLWR research at Oregon State University starting ~2000; NuScale Power was founded in 2007. NuScale submitted its design certification application to the NRC in 2017, received the Final Safety Evaluation Report and Standard Design Approval in 2020, and the NRC certified the 50 MWe design on 29 July 2022 — the first SMR design certified in the US. An uprated 77 MWe variant received Standard Design Approval in May 2025. As of 2026 no NuScale plant is operating; its flagship deployment (the Carbon Free Power Project / UAMPS) was cancelled in 2023, so the concept-to-grid clock for SMRs remains unfinished and is tracking toward ~25+ years.

1. ~2000-2007DOE/OSU MASLWR research (concept) to company founding
2. ~2007-2017Company founding to NRC design certification application
3. ~2017-2022 (~5 years)NRC review to design certification (50 MWe)
4. 2025 (review ~22 months)Uprated 77 MWe Standard Design Approval
5. not yet achieved as of 2026First commercial unit operational

The Ford-class is the first wholly new U.S. supercarrier class in ~40 years. Concept work traces to mid-1990s 'CVX' studies (kicked off ~1997, with roots back to 1994); the formal design effort began when the CVN(X) Milestone 1 contract was awarded to Northrop Grumman Newport News in 2000, renamed CVN-21 in 2002. Lead ship CVN-78 had a ceremonial steel-cut in Aug 2005, keel laid Nov 2009, christened Nov 2013, delivered May 2017, and was commissioned 22 July 2017. So 'the clock' runs ~17 years from formal program start (2000) to commissioning, or ~23 years if you count earliest concept studies.

1. ~1994-2000 (formal CVX study ~1997)Concept/technology studies (CVX/CVN(X))
2. 2000-2005Design / Milestone 1 contract (CVN(X), renamed CVN-21 in 2002)
3. Aug 2005-2007Advance construction / first steel cut
4. Nov 2009-Nov 2013Main construction: keel to christening
5. Nov 2013-Jul 2017Outfitting, trials, delivery to commissioning

The Virginia class was conceived as an affordable post-Cold-War successor to the costly Seawolf class. The program was initiated around 1991 under the 'Centurion' / New Attack Submarine (NSSN) studies. The lead-ship construction contract went to General Dynamics Electric Boat on 30 Sept 1998, keel was laid 2 Sept 1999, the boat was christened 16 Aug 2003, and USS Virginia was commissioned 23 Oct 2004. 'The clock' is ~13 years from program concept (1991) to commissioning, or ~6 years from the construction contract (1998) to commissioning.

1. ~1991-1998Program initiation / Centurion-NSSN concept studies
2. Sep 1998-Sep 1999Construction contract award to keel laying
3. Sep 1999-Aug 2003Construction to christening
4. Aug 2003-Oct 2004Delivery, trials, and commissioning

The Columbia class replaces the aging Ohio-class SSBNs and is the U.S. Navy's top acquisition priority. Concept/technology development began around 2010-2011 (originally the 'Ohio Replacement Program', renamed Columbia in 2016). The detailed-design phase ran with ~3,000 Electric Boat engineers by late 2016; lead-ship construction began 1 Oct 2020. As of Feb 2026 the lead boat is ~65% complete, with the Navy targeting delivery in 2027-2028 and a first strategic deterrent patrol around 2030-2031. 'The clock' runs roughly 17-21 years from concept (2010-2011) to first operational patrol (~2030-2031).

1. ~2010-2016Concept/technology development (Ohio Replacement Program)
2. ~2016-2020Detailed design phase
3. Oct 2020Lead-ship construction start
4. 2020-~2027/2028Construction to projected delivery
5. ~2028-2030/2031Trials to first strategic deterrent patrol

Discussions of a Hubble successor began around 1989, but the formal Next Generation Space Telescope (NGST) concept and design study started in 1996. It was renamed the James Webb Space Telescope in 2002 when contractor teams were selected, the prime contract went to TRW (later Northrop Grumman) in 2003, construction proceeded through 2016, and it finally launched on an Ariane 5 on December 25, 2021. First science images were released July 11, 2022. The 'clock' here is best measured from the 1996 formal concept/design study to the 2021 launch (25 years), with operations beginning in 2022.

1. 1996-2002 (6 yrs)Concept / pre-formulation (NGST design study, naming)
2. 2002-2007 (5 yrs)Design & contractor selection (TRW/Northrop Grumman, 2005 redesign)
3. 2007-2021 (14 yrs)Construction, integration & test
4. Dec 2021 launch, July 2022 first imagesLaunch to first science / operations

ESA selected Cassini-Huygens as a major mission in late 1988 and the US program received major funding in 1989. It passed critical design review in December 1992, launched on a Titan IVB/Centaur on October 15, 1997, took a nearly 7-year gravity-assist cruise (Venus, Earth, Jupiter flybys), entered Saturn orbit on July 1, 2004, and operated until the deliberate atmospheric 'Grand Finale' plunge on September 15, 2017. The 'clock' spans 1988/89 program start to 1997 launch (~9 years), to 2004 operational arrival (~16 years), to 2017 end of mission (~29 years).

1. 1988-1992 (4 yrs)Selection & concept (ESA selection, US funding)
2. 1992-1997 (5 yrs)Design & build (CDR 1992 to launch)
3. 1997-2004 (~7 yrs)Interplanetary cruise (launch to Saturn orbit insertion)
4. 2004-2017 (13 yrs)Operations at Saturn to Grand Finale

A Europa Orbiter mission was first proposed in 1997, followed by the cancelled Jupiter Icy Moons Orbiter (JIMO) concept in the early 2000s. Funding for the multiple-flyby 'Clipper' concept ramped up from 2013-2014, NASA formally approved the mission concept in June 2015, it moved through preliminary design (Phase B, 2017-2019), final design/fabrication (Phase C, 2019), and assembly/test (Phase D, 2022). It launched on a SpaceX Falcon Heavy on October 14, 2024 and is due to arrive at Jupiter in April 2030 for ~50 Europa flybys. The 'clock' is best read from the formal 2015 concept approval to the 2024 launch (~9 years), or from the original 1997 concept (~27 years to launch).

1. 1997-2012 (~15 yrs in study/limbo)Early concept studies (Europa Orbiter, JIMO)
2. 2013-2019 (~6 yrs)Formulation & formal approval (Phase A/B)
3. 2019-2024 (5 yrs)Final design, fabrication, assembly & test (Phase C/D)
4. Oct 2024 launch, ~2030 arrival, ~4 yrs scienceCruise to Jupiter / operations

The European Space Agency selected and funded the Ariane 6 design (Ariane 62 and Ariane 64 variants) in December 2014, with an original debut target of 2020. After repeated slips driven by technical issues and the COVID-19 pandemic, the maiden flight (VA262) launched on 9 July 2024, and the first operational/commercial mission (VA263, carrying the CSO-3 reconnaissance satellite) flew on 6 March 2025.

1. Dec 2014Program selection and funding approval (concept to authorized development)
2. 2015-2024 (~9.5 years; original target was 2019-2020 completion)Development, hardware qualification, and ground/pad testing
3. 9 July 2024 (~10 years after program start)Maiden/inaugural flight (VA262)
4. 6 March 2025 (~11 years after program start)First operational / commercial flight (VA263, CSO-3)

SLS was mandated by the NASA Authorization Act of 2010 and the design was formally announced on 14 September 2011, as a replacement for the retired Space Shuttle and the cancelled Constellation program's Ares I/Ares V rockets. Its first flight was the uncrewed Artemis I mission, which launched on 16 November 2022, roughly 11-12 years after the program clock started. The project drew heavy criticism for cost overruns and delays, costing about USD 31.6 billion as of 2025.

1. Oct 2010Congressional authorization (NASA Authorization Act of 2010)
2. 14 Sep 2011Design announced / formal program start
3. 2011-2022 (~11 years; original estimate targeted ~2017)Development, core-stage build, Green Run testing, integration
4. 16 Nov 2022 (~11 years after 2011 design announcement; ~12 years after 2010 authorization)First flight (Artemis I, uncrewed lunar test)

SpaceX publicly unveiled the Falcon Heavy at an April 2011 Washington, D.C. news conference, projecting an initial test flight in 2013. The maiden flight slipped about five years and finally lifted off on 6 February 2018, carrying Elon Musk's Tesla Roadster as a dummy payload. The delay illustrates that even a derivative vehicle built from existing Falcon 9 cores took roughly seven years from announcement to first successful flight.

1. Apr 2011Public announcement (concept unveiled, 2013 first-flight target)
2. 2011-2018 (~7 years; original target was 2013)Development, core integration redesign, delays from Falcon 9 anomaly investigations
3. 6 Feb 2018 (~7 years after announcement)First flight (demonstration mission, Tesla Roadster payload)

MEB (Modularer E-Antriebs-Baukasten) was Volkswagen's first dedicated, clean-sheet battery-electric architecture. Development began around 2015. The architecture was first previewed as the I.D. concept car at the 2016 Paris Motor Show, the production ID.3 was unveiled in September 2019, start of production (SOP) ran at the Zwickau plant at the end of 2019, and retail customer deliveries began in September 2020. So roughly four years from development kickoff to SOP, with a fifth year to volume customer deliveries.

1. 2015Platform development start (MEB concept/architecture work begins)
2. 2016Concept reveal (I.D. concept car, Paris Motor Show)
3. 2016-2019 (~3 years)Engineering, prototype, validation and software integration
4. Sep-Nov 2019Production reveal (ID.3, Frankfurt) and start of production (Zwickau)
5. by Sep 2020Ramp-up to retail customer deliveries

TNGA is Toyota's clean-sheet modular architecture program that replaced roughly 100 legacy platform variants and was paired with an all-new family of TNGA powertrains (engines, transmissions, hybrid systems). The strategy was conceived in the aftermath of the 2008 financial crisis and the first TNGA product, the fourth-generation Prius, reached market at the end of 2015 — a multi-year clean-sheet effort that simultaneously redeveloped the vehicle architecture and the powertrain line.

1. ~2009 onwardStrategy/concept (post-Lehman rethink of platform strategy)
2. several yearsArchitecture + new powertrain family development and validation
3. late 2015First TNGA product (4th-gen Prius) start of production / launch
4. 2015 onwardRoll-out across 40+ models (Corolla, Camry, RAV4, etc.)

Across the industry, the 'clock' for a new program is most often measured from program approval/concept to start of production (SOP). McKinsey and the Center for Automotive Research put a typical legacy-OEM clean-sheet program at roughly 40-50 months (sometimes longer), while best-in-class programs run ~24-36 months. Leading Chinese EV makers have compressed concept-to-launch to roughly 24 months by using carryover modular architectures, over-the-air software updates, and parallelized validation.

1. early phase of the V-modelConcept / program approval (target setting, business case)
2. bulk of the timelineDesign and engineering development (down the left side of the V)
3. back half of the programPrototype build, integration, and validation (right side of the V: powertrain + crash/safety + emissions)
4. final monthsPre-production / tooling / ramp to Start of Production (SOP)
5. ~24 months (best/China) to 40-50 months (typical legacy)Total concept-to-SOP

California's HSR is the most prominent U.S. example. The clock here is best measured from the 2008 voter-approved bond (Proposition 1A, the program launch / funding authorization) to revenue service. Construction in the Central Valley began in January 2015. As of 2026 no segment is yet operational; the Merced–Bakersfield Initial Operating Segment is the first to carry passengers, with station construction running mid-2026 to mid-2029 and service expected in the early 2030s. The original 2020 full-Phase-1 target has been abandoned, illustrating the gap between program launch and operational reality.

1. pre-2008 to Nov 2008Planning, studies, and bond authorization (Prop 1A program launch)
2. 2008–2014 (~6 years)Environmental review, design, funding assembly, pre-construction
3. Jan 2015 onwardConstruction of Central Valley civil works begins
4. station build mid-2026 to mid-2029; service early 2030sInitial Operating Segment (Merced–Bakersfield) stations and systems to revenue service

HS2's clock runs from the January 2009 creation of HS2 Ltd (program launch) to revenue service. The government confirmed the project would proceed in January 2012; Phase 1 received Royal Assent (the hybrid bill / legal authorization) in February 2017; construction began in 2020. As of 2026, Phase 1 passenger services (Old Oak Common–Birmingham Curzon Street) are not expected before 2036, with London Euston later still — a dramatic slip from the December 2026 date envisioned when proposed in 2010.

1. Jan 2009HS2 Ltd founded (program launch)
2. 2012–2016Government go-ahead and route consultation/design
3. Feb 2017Phase 1 hybrid bill Royal Assent (construction powers)
4. 2020 onwardMain civil construction
5. now estimated 2036–2039Phase 1 revenue service (Old Oak Common–Birmingham)

The Chuo Shinkansen is the leading maglev megaproject. Its deepest roots go back to the 1973 Basic Plan designation, but the actionable clock starts with government construction approval on 27 May 2011, followed by groundbreaking on 17 December 2014. Commercial Tokyo–Nagoya service was originally targeted for 2027; it has been repeatedly delayed and is now expected no earlier than 2035, primarily because Shizuoka Prefecture withheld permission for tunneling work over environmental (water) concerns. The Nagoya–Osaka extension is targeted as early as 2037.

1. 1973 onward (test track running since the 1990s)Basic Plan designation / decades of maglev R&D
2. 27 May 2011Government construction approval (program go-ahead)
3. 17 Dec 2014Construction start (groundbreaking)
4. 2014–2030s (delayed by Shizuoka permitting from 2020)Tunneling and infrastructure build
5. now no earlier than 2035Tokyo–Nagoya commercial service (original 2027 target)

The N700S ('S' for Supreme) is a clean example of how fast a new high-speed train design — as opposed to a whole rail line — can move when built on an established platform and proven manufacturing base. JR Central announced the new trainset concept in June 2016, unveiled the J0 prototype on 10 March 2018 (testing from 20 March 2018), ran 360 km/h high-speed trials in 2019, and entered revenue service on the Tokaido Shinkansen on 1 July 2020. The clock here measures concept announcement to first passenger service.

1. June 2016Concept announcement / start of design
2. to March 2018Prototype (J0) build and unveiling
3. 2018–2019Testing and high-speed trials (up to 363 km/h)
4. first set delivered April 2020; service 1 July 2020Series production and first revenue service

Siemens began the internal product-development/strategic-planning process for its H-class SGT5-8000H in 2000, publicly announced the machine in 2005, and completed the prototype in Berlin in April 2007. The prototype was shipped to the Irsching 4 site, first-fired in December 2007, synchronized to the grid in March 2008, and ran an ~16-18 month in-service validation (simple-cycle) campaign through 2009. After conversion to combined cycle, Irsching 4 set a 60.75% net efficiency world record in a May 2011 test run and was handed over to E.ON for commercial operation in July 2011.

1. 2000-2005Concept / strategic product planning / design start
2. 2005-April 2007Detailed design and prototype manufacture (Berlin)
3. 2007-2008Transport, installation, first fire (Dec 2007), grid sync (Mar 2008)
4. 2008-2009 (~16-18 months)Simple-cycle in-service validation and endurance testing at Irsching 4
5. 2009-2011Conversion to combined cycle; 60.75% efficiency record (May 2011); commercial handover to E.ON (July 2011)

GE's HA/9HA program was backed by a roughly $1 billion R&D investment under its 'FlexEfficiency' high-firing-temperature (>2600F) portfolio. Full-load validation trials of the 9HA.01 test unit were completed in January 2015 at GE's variable-speed, variable-load test stand in Greenville, South Carolina. The first production unit was completed at Belfort, France in May 2015, shipped to EDF's Bouchain combined-cycle plant in June 2015, achieved 'first fire' on December 17, 2015, and reached commercial operation date (COD) in July 2016 - the plant later earning a Guinness World Record for 62.22% combined-cycle efficiency.

1. ~2009-2014R&D / FlexEfficiency HA development (~$1B investment)
2. through January 2015Full-speed full-load validation of 9HA.01 test unit (Greenville, SC) completed
3. May 2015First production unit manufactured at Belfort, France
4. 2015Shipment to Bouchain (June 2015) and first fire (Dec 17, 2015)
5. Dec 2015 - July 2016Commissioning to commercial operation date (COD)

The European AD700 Advanced (700C) Pulverised-Fuel Power Plant program targeted a coal-fired steam plant with 700C turbine inlet steam (vs. ~600C for conventional ultra-supercritical), requiring entirely new nickel-based superalloys for the steam turbine, boiler, and high-temperature piping. It was structured as four phases over roughly 20 years (1998-2018): Phase 1 Part A finished December 2001, Part B in 2004, Phase 2 (2002-2007), with the central AD700 effort running 1998-2011. The parallel US DOE/Ohio Coal Development Office Advanced Materials for Ultrasupercritical Coal-Fired Boilers project was an ~$50 million multi-year R&D program building the same materials base.

1. 1998-Dec 2001Phase 1 Part A (feasibility, initial materials screening)
2. 2001-2004Phase 1 Part B
3. 2002-2007Phase 2 (component development / materials qualification)
4. 2007-2011 (program horizon to 2018)Core AD700 R&D through completion; demonstration phases (planned to 2018)

AbioMed began developing the AbioCor — the first fully self-contained, implantable total artificial heart with no external tubes — in the early-to-mid 1990s, ran animal studies starting 1998, received an FDA Investigational Device Exemption (IDE) and performed its first human implant in July 2001, and ran a 14–15 patient clinical trial through 2004. After an initial 2005 FDA advisory-panel rejection, the device received FDA Humanitarian Device Exemption (HDE) approval on September 5, 2006. Note: the device's underlying research lineage stretches back roughly 30 years through earlier artificial-heart work.

1. early–mid 1990sConcept / company development begins
2. 1998–2000Animal studies
3. Jan–Jul 2001IDE granted + first human implant
4. 2001–2004Clinical trial (14–15 patients)
5. 2005FDA panel review (initial rejection 2005)
6. Sep 2006FDA HDE approval (to market)

The device descends from the Jarvik-7, designed by Willem Kolff and Robert Jarvik at the University of Utah in the late 1960s and first implanted in Barney Clark in December 1982. After the FDA withdrew the IDE and shut down the manufacturer (Symbion) in 1990, the technology was transferred to CardioWest in 1991 and re-developed. A multi-year pivotal study of 81 implants underpinned FDA Premarket Approval (PMA) as a bridge-to-transplant device on October 15, 2004 — described by SynCardia as following roughly a 10-year pivotal clinical study.

1. late 1960s–1970sOriginal design (Jarvik-7, Univ. of Utah)
2. Dec 1982First permanent human implant (Barney Clark)
3. 1990Regulatory reset: IDE withdrawn, Symbion closed
4. 1991Technology transfer / rebrand to CardioWest
5. ~1993–2002Pivotal clinical study (~81 implants, ~10 yrs)
6. Oct 2004FDA PMA approval (bridge to transplant)

Modern DBS traces to Alim-Louis Benabid's 1987 finding that high-frequency thalamic stimulation suppresses tremor. Medtronic developed an implantable pulse generator and lead system (the Activa platform) through the 1990s and earned FDA Premarket Approval (PMA) for thalamic (VIM) DBS to treat essential tremor and Parkinsonian tremor in 1997. A larger multi-site pivotal trial supported FDA PMA approval of STN/GPi DBS for the motor symptoms of advanced Parkinson's disease in 2002. Subsequent indications followed (dystonia HDE 2003, OCD HDE 2009, epilepsy 2018), each requiring its own trial and review.

1. 1987Foundational research (Benabid thalamic stimulation)
2. late 1980s–1990sDevice development + clinical trials (Activa platform)
3. 1997FDA PMA: essential tremor / Parkinsonian tremor
4. late 1990s–2002Multi-site pivotal trial for Parkinson's motor symptoms
5. 2002FDA PMA: STN/GPi DBS for advanced Parkinson's

The widely repeated '15–20 years from discovery to production' figure is well supported. S&P Global Market Intelligence found an average of 15.7 years across 127 mines, and a follow-on analysis (gold, copper, nickel, lithium mines online since 2000) found the average lead time has risen from 12.7 years for mines started in 2005–09 to 17.9 years for mines started in 2020–23. The IEA's 2021 Role of Critical Minerals report cites ~16 years on average. Copper specifically averages 17.9 years (S&P, Dec 2024). The figure is rising over time, and the US (~29 years) and Zambia (~34 years) are far above average.

1. ~12.5 yearsDiscovery and exploration through completed feasibility study (resource delineation, PEA/PFS/bankable FS)
2. ~1.8 yearsPost-feasibility: permitting, financing, construction planning (offtake, government terms, capital raise)
3. ~2.6 yearsConstruction to first/commercial production

One of the largest and highest-grade copper discoveries of the modern era. The Kamoa deposit was discovered by Ivanhoe geologists in 2008 (the adjacent Kakula deposit was discovered in 2016); first copper concentrate was produced in May 2021 with commercial production declared July 1, 2021. From the original Kamoa discovery that gave the project its life, the clock ran about 13 years — fast for a project of this scale, but still consistent with the lower end of the 15–20 year range despite a very favorable, high-grade orebody.

1. 2008 onwardKamoa discovery and early resource definition
2. 2008–2018Resource expansion, Kakula discovery (2016), feasibility studies, government/financing
3. ~2019–May 2021Construction to first copper concentrate

A giant copper-gold porphyry system. Ivanhoe Mines estimated the gold-copper resource in 2001; construction began around 2010; first concentrate was produced in January 2013 and the first batch of copper shipped July 9, 2013 — roughly 12 years from discovery to production for the open-pit phase. The far larger underground block-cave phase took until 2023 to reach production, showing how single deposits can have multi-decade development arcs.

1. 2001 onwardDiscovery / resource estimate and exploration drilling
2. ~2001–2010Feasibility, Mongolia investment agreement, financing
3. ~2010–July 2013Construction to first copper shipment (open pit)

Swiss engineer Carl Eduard Gruner first proposed a Gotthard base tunnel concept in 1947. After decades of study, Swiss voters/authorities approved the NEAT (New Rail Link through the Alps) program in 1992, which funded the tunnel. Construction by AlpTransit Gotthard AG began in 1999, the final breakthrough came in 2011, and the tunnel was officially inaugurated on 1 June 2016 with commercial service starting December 2016.

1. 1947Initial concept (Gruner proposal)
2. 1960s–1970Government study committees / recommendation
3. 1992NEAT program approval (program launch)
4. 1999–2016 (17 years)Construction
5. 2011Final breakthrough
6. 2015–2016Testing/commissioning
7. June 2016 (commercial Dec 2016)Official opening / operational

Sun Yat-sen first envisioned a great Yangtze dam in 1919. After decades of intermittent study, China's National People's Congress formally approved the project in 1992. Construction began on 14 December 1994; the main dam structure (185 m high, ~2,309 m wide) was completed in 2006; the full power plant reached full operation in 2012 when the last of the 32 main turbines began producing.

1. 1919Initial vision (Sun Yat-sen)
2. 1992NPC approval (program launch)
3. Dec 1994Construction start
4. 2006Main dam structure complete
5. 2012Full power plant operational (last turbine online)

The Gorgon gas field was discovered by WAPET in 1980/1981. After long development planning and environmental approval for the sensitive Barrow Island nature reserve, Chevron and partners (Shell, ExxonMobil) took final investment decision in September 2009 and broke ground in December 2009. The first LNG cargo shipped in March 2016, with the project ultimately costing roughly US$54 billion (up from an initial ~US$37 bn estimate).

1. 1980/1981Gas field discovery
2. 2000sDevelopment planning / environmental approval
3. Sept 2009Final Investment Decision (FID)
4. Dec 2009Construction start (ground-breaking)
5. March 2016First LNG cargo