Author : Harry A. Verstynen,Dominick Andrisani
Publisher : Unknown
Page : 44 pages
File Size : 40,9 Mb
Release : 1973
Category : Aerodynamics
ISBN : UIUC:30112106885715
Full-scale Wind-tunnel Investigation on Effects of Slot Spoilers on the Aerodynamic Characteristics of a Light Twin-engine Airplane by Harry A. Verstynen,Dominick Andrisani Pdf
A wind-tunnel investigation has been conducted to determine the effects of slot spoilers on the longitudinal and lateral aerodynamic characteristics of a full-scale mockup of a light twin-engine airplane. The slots were located along the leading edge of the flaps and were used to modulate the flap-induced lift as a possible means of achieving direct lift control. The data showed that the slots were effective in spoiling up to 61 percent of the flap-induced lift, but that an adverse pitching-moment change (nose up) accompanied opening the slots. Opening the slots was found to decrease slightly the downwash angle at the tail and to increase slightly the longitudinal stability of the model.