NASA's research in aeropropulsion is focused on improving the efficiency, capability, and environmental compatibility for all classes of future aircraft. The development of innovative concepts, and theoretical, experimental, and computational tools provide the knowledge base for continued propulsion system advances. Key enabling technologies include advances in internal fluid mechanics, structures, light-weight high-strength composite materials, and advanced sensors and controls. Recent emphasis has been on the development of advanced computational tools in internal fluid mechanics, structural mechanics, reacting flows, and computational chemistry. For subsonic transport applications, very high bypass ratio turbofans with increased engine pressure ratio are being investigated to increase fuel efficiency and reduce airport noise levels. In a joint supersonic cruise propulsion program with industry, the critical environmental concerns of emissions and community noise are being addressed. NASA is also providing key technologies for the National Aerospaceplane, and is studying propulsion systems that provide the capability for aircraft to accelerate to and cruise in the Mach 4-6 speed range. The combination of fundamental, component, and focused technology development underway at NASA will make possible dramatic advances in aeropropulsion efficiency and environmental compatibility for future aeronautical vehicles.
Future Challenge for Aeropropulsion
1992
14 pages
Report
Keine Angabe
Englisch
Aircraft , Manned Spacecraft , Aerospace planes , Aircraft engines , Propulsion system configurations , Structural analysis , Turbofans , Aircraft noise , Fluid mechanics , Nasa programs , Propulsion , Propulsion system performance , Aircraft industry , Bypass ratio , Compatibility , Computational chemistry , Mach number , Noise intensity , Noise pollution , Noise reduction , Pressure ratio , Reacting flow , Software tools , Subsonic speed
NTRS | 1995
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NTIS | 1995
|NTRS | 1980
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