A method of evaluating certain characteristics of approach paths for VTOL airplanes is presented which is based on the solution of the matrix Riccati equation to obtain an optimal state variable feedback controller. The longitudinal equations of motion of the airplane are linearized about a preselected path and the resulting system of equations is treated as a linear, time-varying regulator. The controller which minimizes a quadratic cost function is applied to the linearized system to determine the airplane's ability to return to the prescribed path given a specified initial error in altitude. The procedure is applied to the XC-142A, tilt-wing, V/STOL airplane, under decelerating approach conditions with a glide path consisting of two segments, the first having a smaller angle of descent than the second.
Evaluation of glide paths for landing a VTOL airplane using linear regulator theory.
Asilomar Conference on Circuits and Systems ; 1972 ; Pacific Grove, CA
01.01.1973
Sonstige
Keine Angabe
Englisch
Airplane take-off and landing paths
Engineering Index Backfile | 1967
|METHOD OF AIRCRAFT LANDING BY CURVILINEAR GLIDE PATHS WITHIN THE BOUNDARY TRAJECTORIES
DOAJ | 2017
|X-14 VTOL airplane -- Design tool
Engineering Index Backfile | 1958
|VTOL Airplane Control in Transition Regimes
NTIS | 1974
|