Characterization of periodic motions in aircraft lateral dynamics
DSpace at IIT Bombay
View Archive InfoField | Value | |
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
|
|