Development study of a precooled turbojet engine

Tetsuya Sato*, Hideyuki Taguchi, Hiroaki Kobayashi, Takayuki Kojima, Katsuyoshi Fukiba, Daisaku Masaki, Keiichi Okai, Kazuhisa Fujita, Motoyuki Hongo, Shujiro Sawai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


A precooled turbojet engine has been developed by JAXA used for the hypersonic airplane and spaceplane. The subscale engine named "S-engine" whose thrust and weight are about 1.2 kN and 100 kg was designed, fabricated and tested. The components and the system firing tests under the sea-level-static condition were successfully conducted.In the next phase, a flight test of the S-engine is planned using a stratospheric balloon in 2010 called balloon-based operation vehicle (BOV). The vehicle is dropped from an altitude of 40 km by a high altitude balloon. After 40 s free-fall, the vehicle is pulled up and the S-engine operates for 30 s at about Mach 2. High-altitude tests of the core-engine verified the performance and healthiness of the engine under the condition corresponding to the BOV flight trajectory.

Original languageEnglish
Pages (from-to)1169-1176
Number of pages8
JournalActa Astronautica
Issue number7-8
Publication statusPublished - 2010 Apr 1


  • Flight experiment
  • Precooled turbojet
  • TBCC

ASJC Scopus subject areas

  • Aerospace Engineering


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