Combined Cycle Propulsion System?Challenge and Prospects
Paper number IAC-13,C4,9,1,x18447
Author Mr. Zhang Chengzhi, China Academy of Launch Vehicle Technology, China
Coauthor Mrs. Kun Dai, China Academy of Launch Vehicle Technology, China
Coauthor Mrs. Shu Zhang, China Academy of Launch Vehicle Technology, China
Coauthor Mr. Gao Xiaoming, China Academy of Launch Vehicle Technology, China
Year 2013
Abstract Various propulsion systems have different advantages and flight airspace, such as aero engine, ramjet, rocket motor and piston engine. Combined cycle propulsion system will be the best combination of efficiency and economy, because it can absorb these advantages.
Some problems and critical technologies which needs to be considered and settled are pointed out.Combined cycle propulsion applications to reusable TSTO space transportation,nearby space or space plane,and SSTO vehicle are discussed.Then the research status of combined cycle propulsion system in China are presented. Experience, lessons and difficulties during the development of RBCC propulsion system are analyzed. It shows that the pylon with cavity improves the combustion stabilization,and it provides robust combustion efficiency and wide operability liquid hydrocarbon.
TBCC is expected to be the most possible power choice for first stage of the two-stage-to-orbit vehicle and would have a bright future for high speed airplane and cruise missile. RBCC would mostly be used as power system of high-velocity aircraft in near space altitude. ATR is expected to be used as first power of orbital vehicle.
Based on study of the principle and critical technology, suggestion about combined cycle propulsion development is put forward.
source: https://iafastro.directory/iac/archive/browse/IAC-13/C4/9/18447/
Patent Analysis and Development Study on Airframe and Engine Integration Technology of the Aerospace Plane
Paper number IAC-14,C4,P,1,x22851
Author Dr. Ping Li, China Aerospace Science and Industry Corporation, China
Coauthor Mr. Shuhui Ma, China Aerospace Science and Industry Corporation, China
Coauthor Ms. Ziyan Zhou, China
Year 2014
Abstract The aerospace plane with the characteristics of using oxygen in the atmosphere to reduce the take-off weight, reusable, horizontal takeoff and landing, which can reduce transportation costs between atmosphere and exoatmosphere, and therefore became the focus of the development of aerospace technology in the 21st century. Currently, the United States, Russia, Britain, Germany, Japan and other military powers are all developing the aerospace plane flying techniques. One of the key technologies which restrict the development of the aerospace plane is the aircraft airframe and aspirated engine integration technology, which is the geometry of inlet and exhaust nozzle can update with changes in the flight speed, especially for a reusable aerospace vehicle.
Through technology decomposition, patents and non-patent literature search, data processing, data indexing and important patents screening of the aerospace airframe and aspirated engine integration technology, this paper studied the technology roadmap, in-depth analyzed the technology efficacy of key problems such as the vehicle inner and outer flow integration design technology, complex shape aerodynamic heat prediction and pneumatic thermal elastic and load calculation, selected important patent to solve various technical problems, predicted the future trends and research priorities of the Lockheed Martin, Boeing and other important patent applicants in technology.
source: https://iafastro.directory/iac/archive/browse/IAC-14/C4/P/22851/