Approach and Landing Flight Evaluation of Smart-Cue and Smart-Gain Concepts
| Autor: | David H. Klyde, Chi-Ying Liang |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Engineering
Offset (computer science) business.industry Applied Mathematics Work (physics) Aerospace Engineering Flight control surfaces Flight simulator Space and Planetary Science Control and Systems Engineering Control theory Control system Distortion Electrical and Electronic Engineering Actuator business Simulation Haptic technology |
| Zdroj: | Journal of Guidance, Control, and Dynamics. 32:1057-1070 |
| ISSN: | 1533-3884 0731-5090 |
| DOI: | 10.2514/1.43157 |
| Popis: | The smart-cue and smart-gain concepts were developed as a means to alleviate pilot―vehicle-system loss of control in the presence of control surface actuator rate limiting. Both concepts exploit the measure of dynamic distortion, that is, the difference between the actual and an ideal aircraft control system response. The concept of dynamic distortion has significantly evolved in work conducted by Systems Technology, Inc., during a two-phase program sponsored by NASA Dryden Flight Research Center. In this work, the distortion of interest results from control surface rate limiting and is quantified by the surface position error, whereas the distortion metric is the position lag. A force feedback cue (the constraining function) and/or a command path gain reduction are created when the position error exceeds the position lag (the alerting function). This paper examines the approach and landing flight-test evaluations conducted using the Calspan Corporation Learjet II In-Flight Simulator. Three test pilots evaluated several smart-cue and smart-gain implementations while performing the precision offset landing task. One of the pilots flew on a calm air day, whereas the other two flew on days with moderate turbulence and significant crosswinds. The clear performance enhancer for all three pilots was the smart-gain, however, the best results for the two pilots who flew under adverse conditions were obtained for the configuration that featured both the smart-cue and smart-gain active. This configuration eliminated the undesirable motions that were encountered in the final centerline correction when only the smart-gain was active. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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