Multi-body aircraft with an all-movable center fuselage actively controlling fuselage pressure drag
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United States of America Patent
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-
Apr 5, 1988
Grant Date -
N/A
app pub date -
Feb 12, 1987
filing date -
Feb 12, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-body aircraft with an all-movable center fuselage 20 which translates relative to two side fuselages 22. At subsonic and transonic flight the center fuselage 20 is in a forward position. At supersonic speeds the center fuselage 20 moves aft so as to ensure optimum aerodynamic interference at particular Mach numbers. This provides an increased shock strength and greater surface area so that significant reductions in zero-lift wave drag can be achieved. This concept allows for a significant increase in the wing aspect ratio which would improve high-lift performance at all speed without incurring a significant supersonic zero-lift wave drag penalty. In addition, an improved low-fineness ratio, high-speed performance is achieved at all speeds and for all flight conditions.
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