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Fundamental limitations on v/stol terminal guidance due to aircraft characteristics
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wolkovitch, J. Lochtie, D. W. Lamont, C. W. |
| Copyright Year | 1971 |
| Description | A review is given of limitations on approach flight paths of V/STOL aircraft, including limits on descent angle due to maximum drag/lift ratio. A method of calculating maximum drag/lift ratio of tilt-wing and deflected slipstream aircraft is presented. Derivatives and transfer functions for the CL-84 tilt-wing and X-22A tilt-duct aircraft are presented. For the unaugmented CL-84 in steep descents the transfer function relating descent angle to thrust contains a right-half plane zero. Using optimal control theory, it is shown that this zero causes a serious degradation in the accuracy with which steep flight paths can be followed in the presence of gusts. |
| File Size | 7121129 |
| Page Count | 184 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720007351 |
| Archival Resource Key | ark:/13960/t9z07wb6r |
| Language | English |
| Publisher Date | 1971-12-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Flight Characteristics V/stol Aircraft Lift Drag Ratio Transfer Functions Optimal Control Approach Flight Paths Control Theory Descent Trajectories Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
