Effects Of Inlet Modification And Rocket Rack Extension On The Longitudinal Trim And Low Lift Drag Of The Douglas F5d 1 Airplane As Obtained With A 0

Effects of Inlet Modification and Rocket-Rack Extension on the Longitudinal Trim and Low-Lift Drag of the Douglas F5d-1 Airplane As Obtained with A 0

A flight investigation was conducted to determine the effects of an inlet modification and rocket-rack extension on the longitudinal trim and low-lift drag of the Douglas F5D-1 airplane. The investigation was conducted with a 0.125-scale rocket-boosted model which was flight tested at the Langley Pilotless Aircraft Research Station at Wallops Island, Va. Results indicate that the combined effects of the modified inlet and fully extended rocket racks on the trim lift coefficient and trim angle of attack were small between Mach numbers of 0.94 and 1.57. Between Mach numbers of 1.10 and 1.57 there was an average increase in drag coefficient of about o,005 for the model with modified inlet and extended rocket racks. The change in drag coefficient due to the inlet modification alone is small between Mach numbers of 1.59 and 1.64

A New Dimension, Wallops Island Flight Test Range

Effect of Wing-mounted External Stores on the Lift and Drag of the Douglas D-558-II Research Airplane at Transonic Speeds