NASA's Pursuit of Low-Noise Propulsion for Low-Boom Commercial Supersonic Vehicles

Bridges, James ; Brown, Clifford A ; Seidel, Jonathan

关键词: LOW NOISE;    PROPULSION;    SUPERSONIC AIRCRAFT;    SUPERSONIC FLIGHT;    JET AIRCRAFT NOISE;    SONIC BOOMS;    ACOUSTIC PROPERTIES;    SYSTEMS INTEGRATION;    GROUND TESTS;    AIRCRAFT NOISE;   

RP-ID  :  GRC-E-DAA-TN50748

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Since 2006, when the Fundamental Aeronautics Program was instituted within NASA's Aeronautics Mission Directorate, there has been a Project looking at the technical barriers to commercial supersonic flight. Among the barriers is the noise produced by aircraft during landing and takeoff. Over the years that followed, research was carried out at NASA aeronautics research centers, often in collaboration with academia and industry, addressing the problem. In 2013, a high-level milestone was established, described as a Technical Challenge, with the objective of demonstrating the feasibility of a low-boom supersonic airliner that could meet current airport noise regulations. The Technical Challenge was formally called a Low Noise Propulsion for Low Boom Aircraft and was completed in late 2016. This paper reports the technical findings from this Technical Challenge, reaching back almost 10 years to review the technologies and tools that were developed along the way. It also discusses the final aircraft configuration and propulsion systems required for a supersonic civilian aircraft to meet noise regulations using the technologies available today. Finally, the paper documents the model-scale tests that validated the acoustic performance of the study aircraft.