A Flight Investigation Of An Automatic Gust Alleviation System In A Transport Airplane
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A Flight Investigation Of An Automatic Gust Alleviation System In A Transport Airplane
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Author : Paul A. Hunter
language : en
Publisher:
Release Date : 1961
A Flight Investigation Of An Automatic Gust Alleviation System In A Transport Airplane written by Paul A. Hunter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.
A flight investigation has been conducted of an automatic gust-alleviation system designed primarily to improve riding comfort in rough air. The gusts were sensed by a vane located on a boom ahead of the airplane. The wing flags moved in response to the vane in such a way as to counteract the change in wing lift due to the gust and a portion of the elevator moved to counteract pitching moments due to flap deflection. In the final configurations, inboard portions of the wing flaps also moved in such a way as to counteract the change in angle of attack at the tail due to the gust. The result indicate alleviation of normal acceleration of up to about 60 percent at the natural frequency of the airplane (0.6 cycle per second) and about 40 percent at 2 cycles per second. A further increase in riding comfort was achieved by a simultaneous alleviation of pitching velocity. For this particular airplane, gusts having frequencies greater than 1.5 cycles per second at a speed of 130 knots had little effect on riding comfort. Brief tests were also made of a configuration intended for reducing structural loads and of a configuration utilizing an accelerometer as the gust sensor. The gust alleviation capabilities of these configurations were somewhat less than that of the optimum configuration with vane-type gust sensor.
Flight Investigation Of Some Effects Of A Vane Controlled Gust Alleviation System On The Wing And Tail Loads Fo A Transport Airplane
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Author : Russell L. Schott
language : en
Publisher:
Release Date : 1961
Flight Investigation Of Some Effects Of A Vane Controlled Gust Alleviation System On The Wing And Tail Loads Fo A Transport Airplane written by Russell L. Schott and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Aerodynamics categories.
Nasa Technical Note
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Author :
language : en
Publisher:
Release Date : 1973
Nasa Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Aeronautics categories.
An Aeroelastician S Perspective Of Wind Tunnel And Flight Experiences With Active Control Of Structural Response And Stability
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Author :
language : en
Publisher:
Release Date : 1984
An Aeroelastician S Perspective Of Wind Tunnel And Flight Experiences With Active Control Of Structural Response And Stability written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
Technical Abstract Bulletin
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Author : Defense Documentation Center (U.S.)
language : en
Publisher:
Release Date : 1961-02
Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961-02 with Technology categories.
Index To Nasa Technical Publications
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1960-07
Index To Nasa Technical Publications written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960-07 with categories.
Human Engineering
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Author : Defense Documentation Center (U.S.)
language : en
Publisher:
Release Date : 1962
Human Engineering written by Defense Documentation Center (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Human engineering categories.
A Selected Listing Of Nasa Scientific And Technical Reports For
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Author :
language : en
Publisher:
Release Date : 1954
A Selected Listing Of Nasa Scientific And Technical Reports For written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Aeronautics categories.
Index Of Nasa Technical Publications
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1960
Index Of Nasa Technical Publications written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with Aeronautics categories.
Analysis Of Effects Of Spanwise Variations Of Gust Velocity On A Vane Controlled Gust Alleviation System
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Author : L. Keith Barker
language : en
Publisher:
Release Date : 1971
Analysis Of Effects Of Spanwise Variations Of Gust Velocity On A Vane Controlled Gust Alleviation System written by L. Keith Barker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Gust loads categories.
An analysis has been made of the effects of spanwise variations of gust velocity in isotropic turbulence on a gust-alleviation system which employs an angle-of-attack vane mounted ahead of the wing to sense the vertical gust velocity. The wing flaps were moved in response to the vane deflection by a linear second-order servosystem to produce a lift opposite to that produced by the gust. Consideration of spanwise variation of gusts has indicated design parameters (gain and natural frequency of flap servosystem and vane location) that give substantial reduction of the lift due to gusts.