Results 171 to 180 of about 10,850 (227)

Computation of the expansion flow of a hypersonic propulsion system

10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference, 2001
For the design of air-breathing hypersonic vehicles the simulation of the flow inside the propulsion system is of essential interest. To accurately compute the expansion flow of a hydrogen/air mixture at high temperature, the chemical and vibrational nonequilibrium effects must be taken into account.
Link, T., Koschel, W.
openaire   +2 more sources

The PDWA Concept for Hypersonic Propulsion

1997
An essential problem in the succesfull development of a Single Stage To Orbit (SSTO) vehicle is the design of an integrated propulsion system that can efficiently cover the entire range of flight speeds. Conventional designs require heavy turbo-machinery below Mach 3, at which point a ramjet mode becomes possible.
J.-L. Cambier, H. G. Adelman
openaire   +1 more source

Thermal Control for Hypersonic Vehicle Propulsion

1991 American Control Conference, 1991
This paper describes some of the key features and conclusion of a preliminary thermal control system design for the National Aero-Space Plane (NASP). The cooling of the airframe and propulsion system is achieved by pumping cold fuel through a network of heat exchangers prior to combustion.
James M. Krause, Gary L. Hartmann, George D. Ianculescu   +2 more
openaire   +1 more source

Basic hypersonic propulsion reseach in German universities

8th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 1998
Three so-called Special Collaborative Research Centers on Hypersonics have been founded in 1989 at the Aachen University of Technology, at the Technical University of Munich together with the University of the Armed Forces in Munich and at the University of Stuttgart.
openaire   +2 more sources

Hypersonic Shock-Induced Combustion Propulsion

47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, 2009
An investigation of the shock-induced-combustion ramjet propulsive cycle was conducted in the 38-mm-bore ram accelerator facility at the University of Washington. Titanium-alloy projectiles were launched into reactive propellants at Mach numbers greater than 5.5 to determine if the combustion process could be shock initiated and stabilized, what levels
Carl Knowlen, Andrew Higgins, Paul Harris, Adam Bruckner   +3 more
openaire   +1 more source

Hypersonic Propulsion-breaking the Thermal Barrier

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 1993
The challenges of hypersonic propulsion impose unique features on the hypersonic vehicle—from large volume requirements to contain cryogenic fuel to airframe-integrated propulsion required to process sufficient quantities of air. Additional challenges exist in the design of the propulsion module that must be capable of efficiently processing air at ...
openaire   +1 more source

Fusion-electric propulsion for hypersonic flight

29th Joint Propulsion Conference and Exhibit, 1993
Recent studies by R.W. Bussard have shown that charged nuclei of certain light element isotopes can be electrostatically compressed to sucient density for nuclear fusions to occur. And the resulting fusion reac tions involving such nuclei emit no neutrons and induce no radioactivity at all.
H. FRONING, JR., R. BUSSARD
openaire   +1 more source

Conceptual Study into Wave Ingesting Propulsion for Hypersonic Flight

25th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2023
Boundary layer or wake ingesting propulsion systems are gaining increased attention in the design of sub-sonic flight vehicles. They deliver performance gains by re-energising drag processed flow. The high speed flight analogy are wave ingesting propulsion systems, that attempt to manipulate the movement of momentum in order to minimise or eliminate ...
openaire   +2 more sources

Applications of CFD for Hypersonic Propulsion

1993
This paper presents an overview of research activity on the application of CFD for hypersonic propulsion systems. Topics reviewed are: Propulsion system integration, typical computations for propulsion components (generic inlet, simple and complex combustion chambers,and nozzle), and CFD code validation issues.
openaire   +1 more source

Hypersonic flight [scramjet aircraft propulsion]

IEEE Spectrum, 2004
Current turbojet engines cannot propel an aircraft to hypersonic speeds -their spinning shafts and compressors would simply collapse. To solve this problem, groups in the United States, Japan, Australia, and other countries are working on a propulsion system that burns fuel combined with air flowing at supersonic speeds through the engine, which is ...
openaire   +1 more source