IHI Aerospace

IHI Aerospace Co., Ltd. is a Japanese aerospace manufacturer and a subsidiary of IHI Corporation. Its business spans space development, defense equipment, and aircraft-engine components. The company’s stated business areas on its official site include these three fields; its history and product range also show a particular concentration in rocket and propulsion technologies. The company’s lineage is associated with Japanese aircraft and propulsion manufacturing. Its historical roots are traced in the supplied Japanese-language encyclopedia entry to an engine factory established by Nakajima Aircraft in 1924. After a sequence of corporate changes, the space and aerospace division of Nissan Motor was separated and brought under Ishikawajima-Harima Heavy Industries, now IHI, on July 1, 2000. The company adopted the name IHI Aerospace in 2008, and it became a central IHI Group base for space-development activities. Its space-related offerings include launch vehicles and sounding rockets, solid rocket boosters and other propulsion components, satellite thrusters, and systems and equipment for space experiments and human spaceflight infrastructure. Named examples in the supplied material include Epsilon, M-V, SS-520, S-520 and S-310 rockets, H-IIA/H-II solid rocket boosters, the H3 SRB-3 booster, and equipment associated with Japan’s Kibo laboratory and the HTV cargo vehicle. The company also manufactures or supplies defense-related products, including rocket systems and mine-clearing equipment, and aircraft-engine parts. IHI Aerospace is part of the IHI Group rather than an independent publicly listed company. Its headquarters moved from Tokyo to Tomioka, Gunma Prefecture, on April 1, 2024; its former Tokyo headquarters became a Tokyo office. The company’s official website continues to present its activities under the space-development, defense-equipment, and aircraft-engine-component headings. Its work and products are connected to Japan’s national space and defense programs, as well as commercial launch activity, including the Kairos launch vehicle developed by Space One.

IHI Aerospace’s corporate history is rooted in Japan’s aircraft-engine and propulsion industries. The supplied Japanese-language encyclopedia entry traces the lineage to 1924, when an engine factory was established by Nakajima Aircraft in Ogikubo, Tokyo. The organization’s name and corporate structure changed repeatedly after the Second World War: it became Fuji Sangyo in 1945, Fuji Precision Industries was established in 1950, and a 1954 merger created a new Fuji Precision Industries. That company adopted the Prince Motor Company name in 1961 and merged with Nissan Motor in 1966. The decisive transition to the present aerospace business occurred in 2000. Following Renault’s capital participation in Nissan, Nissan’s space and aerospace division was separated from the automaker. On July 1, 2000, the division became IHI Aerospace’s predecessor, IHI Aerospace Co., Ltd. (then named IHI Aerospace under its earlier Japanese corporate styling), within Ishikawajima-Harima Heavy Industries. The encyclopedia entry gives the separation as the point at which the aerospace operation moved under IHI. The company’s Tomioka facility was completed in 1998, shortly before this corporate transition. In 2007, Ishikawajima-Harima Heavy Industries changed its corporate name to IHI. On July 1, 2008, the subsidiary changed its name to IHI Aerospace. The entry describes the company as taking in much of the space-development business previously undertaken within IHI and becoming the group’s main base for space development. Its capabilities reflect a long emphasis on solid-propellant rocket technology. The product history described in the supplied entry ranges from Japanese scientific and sounding rockets to launch vehicles, boosters, spacecraft systems, satellite propulsion products and defense equipment. The company has been associated with multiple Japanese launch and research programs, including the Epsilon and M-V launch vehicles, S-series sounding rockets, H-II-family boosters, and equipment for the Kibo Japanese Experiment Module and the H-II Transfer Vehicle. The official corporate site groups its present business into space development, defense equipment, and aircraft-engine components. The company’s headquarters relocation took effect on April 1, 2024, moving from Koto-ku, Tokyo, to Tomioka, Gunma Prefecture; the former Tokyo headquarters became a Tokyo office. The official site’s news list records ongoing activity involving Japanese launch vehicles and space systems, including launch announcements and notices concerning Epsilon-related and H3/H-IIA programs. It also lists a 2025 memorandum with Northrop Grumman concerning propulsion technology and the launch success of the IHI-SAT2 hyperspectral microsatellite. Together, the documented milestones show a company that has evolved from a legacy propulsion operation into an IHI Group aerospace manufacturer serving space, defense, and aircraft-engine markets.

• 2024

  Headquarters moved to Tomioka

• 2008

  Company renamed IHI Aerospace

• 2007

  Parent company adopted the IHI name

• 2000

  Nissan aerospace division moved under IHI

• 1998

  Tomioka facility completed

• 1966

  Prince Motor Company merged with Nissan Motor

• 1961

  Renamed Prince Motor Company

• 1954

  New Fuji Precision Industries formed by merger

• 1950

  Fuji Precision Industries established

• 1945

  Renamed Fuji Sangyo

• 1924

  Predecessor engine factory established

A Japanese aerospace and defense manufacturer within the IHI Group, with capabilities spanning space launch systems, rocket propulsion, defense equipment, and aircraft-engine components.

• Epsilon launch vehicle

• M-V launch vehicle

• S-310, S-520 and SS-520

• H-II/H-IIA SRB and SRB-A; H3 SRB-3

• BT-4 and BT-6

• Kibo and HTV-related equipment

• Defense rocket and mine-clearing systems

• Aircraft-engine components

1. 1株式会社IHIエアロスペースihi.co.jp
2. 2企業情報｜株式会社ＩＨＩエアロスペースihi.co.jp
3. 3事業紹介｜株式会社ＩＨＩエアロスペースihi.co.jp
4. 4IHIエアロスペースja.wikipedia.org
5. 5Offices | About IHI | IHI Corporationihi.co.jp
6. 6IHI Aerospacewikidata.org