N-I (rocket)

Last updated September 12, 2025

N₂O₄  / A-50

1 2 3 4 5 Wade, Mark. "Delta". Encyclopedia Astronautica. Archived from the original on 17 August 2013. Retrieved 3 September 2008.
1 2 "JAXA Digital Archives". Japan Aerospace Exploration Agency. Archived from the original on 9 September 2009. Retrieved 1 October 2009.
↑ "N-Iロケット開発の歩み". Yukihiko Takenaka, NASDA. Retrieved 10 February 2011.
↑ "三菱重工名古屋誘導推進システム製作所事業所紹介沿革". Mitsubishi Heavy Industries. Archived from the original on 4 July 2011. Retrieved 10 February 2011.
↑ "第1部創造性豊かな科学技術を求めて第2章自主技術開発への展開第3節先導的・基盤的科学技術分野における自主技術開発の展開 2.宇宙開発". Ministry of Education, Culture, Sports, Science and Technology. Archived from the original on 15 June 2008. Retrieved 10 February 2011.
↑ Krebs, Gunter. "N-1". Gunter's Space Page. Retrieved 31 August 2008.
↑ Pearlman, Robert (29 February 2016). "Space Station Command Change Is One Giant Leap (Day) for Space History". Space.com . Retrieved 2 November 2017.
↑ "JAXA | N-I Launch Vehicle". JAXA | Japan Aerospace Exploration Agency. Retrieved 18 February 2024.
1 2 3 4 5 6 7 McDowell, Jonathan. "Thor". Orbital and Suborbital Launch Database. Jonathan's Space Report. Archived from the original on 1 August 2020. Retrieved 31 August 2008.
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1 2 3 "JAXA | Ionosphere Sounding Satellite "UME" (ISS)". JAXA | Japan Aerospace Exploration Agency. Retrieved 18 February 2024.
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N-I
Size
The N-I rocket^[1]
Function	Small-lift launch vehicle
Manufacturer	McDonnell Douglas (design) Mitsubishi Heavy Industries (production)
Country of origin	United States (design) Japan (production)
Height	34 m (112 ft)^[1]
Diameter	2.44 m (8.0 ft)
Mass	131,330 kg (289,530 lb)^[1]
Stages	2 or 3
Capacity
Payload to LEO
Mass	1,200 kg (2,600 lb)^[1]

Mitsubishi Heavy Industries

Mitsubishi

Subsidiaries

Joint ventures

Current	Dubai Metro (25%) Japanese Aero Engine Corporation Launch Services Alliance Mitsubishi Caterpillar Forklifts
Defunct	Atmea Nihon Aircraft Manufacturing Corporation

Products

Aircraft	F-1 F-2 F-15J H-60 MH2000 Mitsubishi SpaceJet T-2 X-2
Armored vehicles	Type 61 Type 74 Nana-yon Type 89 IFV Type 90 Kyū-maru Type 10
Launch vehicles	N-I N-II H-I H-II H-IIA H-IIB H3
Missiles	Type 88 Type 89 Type 90 Type 91
Ships	Akizuki class Atago class Hatakaze class Kongō class Takanami class
Submarines	Harushio class Oyashio class Sōryū class Taigei class
Other	Crystal Mover and Urbanismo Green Mover Max MEISTeR Mitsubishi APWR Wakamaru

People

Kazuo Tsukuda

Other

Mitsubishi Sagamihara DynaBoars

Products currently in development shown in italics

Category

v t e Orbital launch systems
List of orbital launch systems Comparison of orbital launch systems
Current	Angara 1.2 A5 Ariane 6 Atlas V Ceres 1 1S Chollima-1 Electron Eris ^† Falcon 9 Block 5 Falcon Heavy Firefly Alpha Gravity-1 GSLV H3 Hyperbola-1 Jielong 1 3 KAIROS ^† Kaituozhe 2 Kinetica 1 Kuaizhou 1 1A 11 Long March 2C 2D 2F 3A 3B/E 3C 4B 4C 5 5B 6 6A 6C 7 7A 8 11 11H 12 LVM3 Minotaur I IV V C New Glenn Nuri OS-M1 ^† Pegasus XL Proton-M PSLV Qaem 100 Qased Shavit 2 Simorgh SLS Block 1 Soyuz-2 2.1a / STA 2.1b / STB Spectrum ^† SSLV Starship Tianlong-2 Unha Vega C Vulcan Centaur Zhuque 2E
In development	Antares 330 Bloostar Blue Whale 1 Ceres-2 Cyclone-4M Deca Eclipse Epsilon S Gravity-2 HANBIT-NANO Hyperbola-2 Irtysh Kinetica 2 2H 3 KSLV-III Kuaizhou 21 31 Long March 9 10 Miura 5 Neutron New Line 1 NGLV Nova OS-M 2 4 Orbex Prime Pallas-1 Red Dwarf RFA One SLS Block 1B Block 2 Soyuz-7 Terran R Tianlong-3 VLM Vega E Zero Zhuque 3 Zuljanah
Retired	Antares 110 120 130 ^† 230 230+ Ariane 1 2 3 4 5 ASLV Athena I II Atlas B D E/F G H I II III LV-3B SLV-3 Able ^† Agena Centaur Black Arrow Conestoga ^† Delta A B C D E G J L M N 0100 1000 2000 3000 4000 5000 II III IV IV Heavy Diamant Dnepr Energia Epsilon Europa I ^† II ^† Falcon 1 Falcon 9 v1.0 v1.1 v1.2 "Full Thrust" Feng Bao 1 GSLV Mk I H-I H-II H-IIA H-IIB Juno I Juno II Kaituozhe-1 Kosmos original 1 2/2I 3 3M Lambda 4S LauncherOne Long March 1 1D ^† 2A 2E 3 3B 4A Mu 4S 3C 3H 3S 3SII V N1 ^† N-I N-II Naro-1 Paektusan ^† Pilot-2 ^† R-7 Luna Molniya M L Polyot Soyuz original FG L M U U2 2-1v Soyuz/Vostok Sputnik Voskhod Vostok L K 2 2M R-29 Shtil' Volna ^† Rocket 3 RS1 ^† Safir 1 1A 1B Saturn I IB V Scout X-1 Blue Scout II ^† X-2 ^† X-2M X-3 X-3M X-4 X-2B ^† B A B-1 D-1 A-1 E-1 F-1 G-1 Shavit original 1 SLV Space Shuttle SPARK ^† Sparta SS-520 Start-1 Terran 1 ^† Thor Able Ablestar 1 2 Agena A B D Burner 1 2 Delta DSV-2U Thorad-Agena SLV-2G SLV-2H Titan II GLV IIIA IIIB IIIC IIID IIIE 34D 23G CT-3 IV Tsyklon R-36-O original 2 3 Universal Rocket UR-500 Proton Proton-K Rokot Strela Vanguard Vega original VLS-1 ^† Zenit 2 2M 2FG 3SL 3SLB 3F Zhuque 1 ^† 2
Classes	Sounding rocket Small-lift launch vehicle Medium-lift launch vehicle Heavy-lift launch vehicle Super heavy-lift launch vehicle
This template lists historical, current, and future space rockets that at least once attempted (but not necessarily succeeded in) an orbital launch or that are planned to attempt such a launch in the future Symbol ^† indicates past or current rockets that attempted orbital launches but never succeeded (never did or has yet to perform a successful orbital launch)

Japanese orbital launch systems

Space agencies

JAXA

Active	H3
Planned	Epsilon S
Retired	Epsilon H-IIA H-IIB SS-520 (Three stage variant)

ISAS

Retired	Lambda (4S) Mu (4S 3C 3H 3S 3SII V)

NASDA

Retired	N-I‡ N-II‡ H-I‡ H-II

NASDA/ISAS

Retired	J-I¤

Private sector

IST

Planned	ZERO DECA

Space One

Active	KAIROS

Galaxy Express

Abandoned	GX‡

‡ Based around licence-produced US rockets; ¤ Never flew an orbital flight (only 1 suborbital flight performed)

Thor and Delta rockets

Rockets

Thor

Delta

Alphabetical	Delta A Delta B Delta C Delta D Delta E Delta F Delta G Delta J Delta L Delta M Delta N
Numerical	Delta 0100 Delta 1000 Delta 2000 Delta 3000 Delta 4000 Delta 5000 Delta 6000 Delta 7000 Delta 8000 Delta 9000
Modern	Delta II Delta III Delta IV Delta IV Heavy

Export

Launch sites

Canaveral	(S)LC-17 LC-18B SLC-37B
Johnston	LE-1 LE-2
Tanegashima	Osaki
Vandenberg	SLC-1 SLC-2 SLC-3 SLC-6 SLC-10
Bases	Bardney Breighton Caistor Carnaby Catfoss Coleby Grange Driffield Feltwell Folkingham Full Sutton Harrington Hemswell Ludford Magna Melton Mowbray Mepal North Luffenham North Pickenham Polebrook Shepherds Grove Tuddenham

Components

Boosters

First stages

Common Booster Core

Upper Stages

Delta	Delta-A Delta-D Delta-E Delta-F Delta-K Delta-P DCSS
Other	Able Ablestar Agena Altair Burner FW-4D IABS PAM-D Star UM-129

Engines

Manufacturers

Rocket	Douglas McDonnell Douglas Boeing United Launch Alliance
Engines	Aerojet Alliant Rocketdyne Thiokol TRW

Launches

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