An in-flight simulation of VTOL hover control conceptsResults of several parametric ground-based simulations covering a variety of VTOL in-hover control concepts are reviewed. The systems considered are angular acceleration, rate, and attitude control, as well as translational rate control. Since many cues are severely restricted by ground-based simulation (e.g., motion, peripheral vision, and environment), some form of in-flight validation of these results is desired. Such a study has been undertaken utilizing the NASA Ames X-14B VTOL aircraft. This in-flight simulator has been configured with a fly-by-wire capability in the hover mode through an analog-/digital variable stability system. This system permits the implementation of either response-feedback or model-following type of control. A comparison of flight- and ground-based data is shown for the attitude control system with the X-14B being flown in both a tethered hover and a free-flight hover.
Document ID
19770052109
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Corliss, L. D. (NASA Ames Research center; U.S. Army, Air Mobility Research and Development Laboratory, Moffett Field Calif., United States)
Greif, R. K. (NASA Ames Research Center Moffett Field, CA, United States)
Gerdes, R. M. (NASA Ames Research Center Moffett Field, Calif., United States)