The influence of lift engine arrangement on the stability of lift jet powered VTOL-aircraft in hovering flight is investigated. To that end, the forces and moments occurring at the inlet in consequence of the air masses sucked in by the engines are computed by means of the momentum theory. Furthermore, the engine derivatives are derived and equations of motion for hovering flight are defined. For eight VTOL configurations with different lift engine arrangement, the eigenvalues of the coupled longitudinal and lateral motion are computed. The vertical distance of engine inlets from the center of gravity of the aircraft proves to be the essential stability parameter. (Author)
On the Influence of Lift Engine Arrangement on the Eigenmotion of Lift Jet Powered VTOL Aircraft in Hovering Flight . ueber den Einfluss der Hubtriebwerksanordnung Auf die Eigenbewegung Strahlgestuetzter VTOL-Flugzeuge im Schwebeflug
1971
51 pages
Report
Keine Angabe
Englisch
NTRS | 1977
|Lift-thrust powerplant arrangement for commercial VTOL aircraft
Engineering Index Backfile | 1962
|