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Characterization of periodic motions in aircraft lateral dynamics

DSpace at IIT Bombay

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Title Characterization of periodic motions in aircraft lateral dynamics
 
Creator ANANTHKRISHNAN, N
SUDHAKAR, K
 
Subject slender delta wings
rock
 
Description Limit cycles in aicraft lateral dynamics are called wing rock. Wing rock prevention and/or control is an important objective for aircraft that need to fly and maneuver at moderate to high angles of attack, This requires a characterization of wing rock periodic motions, which is our aim. Normal and large-amplitude types of wing rock are distinguished. Onset of normal wing rock occurs at a Hopf bifurcation followed by limit cycle oscillations of gradually growing amplitude. Onset of large-amplitude wing rock is similar, but the limit cycles following the Hopf bifurcation show a jump to a large-amplitude oscillation at a periodic saddle-node bifurcation. Large-amplitude wing rock is shown to be the result of lateral-longitudinal coupling in conjunction with a resonance condition. A continuation algorithm is used to track periodic solutions with varying parameters and to locate bifurcation points. A strategy to avoid large-amplitude wing rock is indicated on the basis of the study.
 
Publisher AMER INST AERONAUT ASTRONAUT
 
Date 2011-07-15T08:14:01Z
2011-12-26T12:49:21Z
2011-12-27T05:35:37Z
2011-07-15T08:14:01Z
2011-12-26T12:49:21Z
2011-12-27T05:35:37Z
1996
 
Type Article
 
Identifier JOURNAL OF GUIDANCE CONTROL AND DYNAMICS, 19(3), 680-685
0731-5090
http://dx.doi.org/10.2514/3.21674
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4197
http://hdl.handle.net/10054/4197
 
Language en