Main business

We handle approximately 70% of jet engine production in Japan.
Aircraft EnginesIHI is Japan’s leading maker of jet engines, with a market share of around 70%. We are the primary contractor and manufacturer for aircraft engines used by the Ministry of Defense, covering all fighter aircraft models. We collaborate in international projects to develop and supply engine modules and components for civilian aircraft, and are renowned as Asia’s core engine maintenance provider. We conduct research and development into advanced, eco-friendly engines.

Applying our cutting edge technologies to activities in other fields.
Rocket Systems & Space ExplorationIHI has participated in Japan’s space development effort from the outset. We have developed and manufactured the turbopumps and gas-jet systems that are crucial to successful rocket launches.
Our involvement in Japan’s space program expanded significantly in 2000, when we absorbed the Aerospace Division of Nissan Motor, a leader in solid-fuel rocket technology. We play an important role in developing and constructing the Exposed Facilities of the KIBO Japanese Experiment Module, which is a part of the International Space Station program. We support experiments in space by supplying experimental systems needed for cooperative international projects.