The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2006
Filed:
Jul. 22, 2003
Osamu Okamoto, Tokyo, JP;
Tatsuo Yamanaka, Saitama, JP;
Masataka Maita, Tokyo, JP;
Hideyuki Taguchi, Tokyo, JP;
Takeshi Tsuchiya, Tokyo, JP;
Osamu Okamoto, Tokyo, JP;
Tatsuo Yamanaka, Saitama, JP;
Masataka Maita, Tokyo, JP;
Hideyuki Taguchi, Tokyo, JP;
Takeshi Tsuchiya, Tokyo, JP;
National Aerospace Laboratory of Japan, Tokyo, JP;
Abstract
A novel combined engine for a single-stage spacecraft is provided that combines a air-breathing engine utilizing oxygen in the atmosphere as oxidizer and rocket engines for obtaining thrust outside the atmosphere and that does not require a portion whose shape is variable in accordance with the flight speed. Rocket enginesare provided on strutsthat form air introduction channelsin the air intake section. The rocket jetsfrom the rocket enginescontrol the flow of the airflowsintroduced into the combustion chamberin accordance with the flight speed. When the spacecraftis stationary or in subsonic flight, the rocket jetspromote air intake into the combustion chamberby lowering of static pressure due to expansion (ejector effect). In the subsonic flight condition, it performs the role of air compression, mixing with incoming air, fuel injection and ignition and during supersonic/ultra-supersonic flight it performs the role of a variable diffuser.