An investigation of vertical takeoff and landing aircraft lift losses in hover was conducted to evaluate a method for a simplified test technique. Three flat plate models were tested to determine their usefulness in predicting hover characteristics by comparing results between plate and three-dimensional models. Data obtained for the plate models were correlated to three-dimensional results by the application of a geometrical equivalent height correction factor. The correlation of plate and tunnel models indicated that lift losses in ground effect were essentially independent of the efflux characteristics for the engine simulators.
Analysis of spread multi-jet VTOL aircraft in hover
1974-12-01
Report
No indication
English
Analysis of Spread Multi-Jet VTOL Aircraft in Hover
NTIS | 1974
|Some fundamentals for efficient VTOL aircraft hover control
Engineering Index Backfile | 1966
|Hover Control Tests on Flying Test Bed for VTOL Aircraft
NTIS | 1975
|On gyroscopic inherent stability of VTOL aircraft near hover condition
Engineering Index Backfile | 1963
|