Some effects of parameter variations on the lateral-directional stability of aircraft

Robert F. Stengel

doi:10.2514/3.55959

Some effects of parameter variations on the lateral-directional stability of aircraft

Robert F. Stengel

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

Methods of analyzing the effects of aerodynamic uncertainties on the stability of lateral-directional motions are presented. Truncated and “residualized” reduced-order models of the motion are developed. Together with covariance analysis, these models provide simplified estimates of the probability of instability. A Space Shuttle entry flight condition is examined with this technique, and the predicted probability of open-loop instability is found to be low (< 0.0001). Monte Carlo stability analysis illustrates that closed-loop control can increase the probability of instability as a consequence of uncertainty in the control derivatives.

Original language	English (US)
Pages (from-to)	124-131
Number of pages	8
Journal	Journal of Guidance, Control, and Dynamics
Volume	3
Issue number	2
DOIs	https://doi.org/10.2514/3.55959
State	Published - 1980

All Science Journal Classification (ASJC) codes

Control and Systems Engineering
Aerospace Engineering
Space and Planetary Science
Electrical and Electronic Engineering
Applied Mathematics

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10.2514/3.55959

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abstract = "Methods of analyzing the effects of aerodynamic uncertainties on the stability of lateral-directional motions are presented. Truncated and “residualized” reduced-order models of the motion are developed. Together with covariance analysis, these models provide simplified estimates of the probability of instability. A Space Shuttle entry flight condition is examined with this technique, and the predicted probability of open-loop instability is found to be low (< 0.0001). Monte Carlo stability analysis illustrates that closed-loop control can increase the probability of instability as a consequence of uncertainty in the control derivatives.",

author = "Stengel, {Robert F.}",

note = "Funding Information: This research was sponsored in part by NASA Langley Research Center under Contract No. NAS1-13502.",

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PY - 1980

Y1 - 1980

N2 - Methods of analyzing the effects of aerodynamic uncertainties on the stability of lateral-directional motions are presented. Truncated and “residualized” reduced-order models of the motion are developed. Together with covariance analysis, these models provide simplified estimates of the probability of instability. A Space Shuttle entry flight condition is examined with this technique, and the predicted probability of open-loop instability is found to be low (< 0.0001). Monte Carlo stability analysis illustrates that closed-loop control can increase the probability of instability as a consequence of uncertainty in the control derivatives.

AB - Methods of analyzing the effects of aerodynamic uncertainties on the stability of lateral-directional motions are presented. Truncated and “residualized” reduced-order models of the motion are developed. Together with covariance analysis, these models provide simplified estimates of the probability of instability. A Space Shuttle entry flight condition is examined with this technique, and the predicted probability of open-loop instability is found to be low (< 0.0001). Monte Carlo stability analysis illustrates that closed-loop control can increase the probability of instability as a consequence of uncertainty in the control derivatives.

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Some effects of parameter variations on the lateral-directional stability of aircraft

Abstract

All Science Journal Classification (ASJC) codes

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