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An investigation was made to determine the effects of wing inboard plan-form modifications on the lift, drag, and longitudinal characteristics of a rocket-propelled free-flight model. The model had a body of fineness ration 17.4, a modified wing with a basic plan form swept back 52.5 degrees and an aspect ratio of 3, and inline horizontal tail surfaces which were aerodynamically pulsed continuously throughout the flight.
A free-flight investigation has been made to determine the effect of wing camber and twist at Mach numbers from 1.4 to 2.1 on the lift, drag, and longitudinal stability of a configuration having a 52.5 degree sweptback wing of aspect ratio 3, and inline tail surfaces. The wing was cambered and twisted to have low drag at a wing lift coefficient of 0.3 and at a Mach number of 1.46. The method reported in NACA Report 1226 was used to determine the wing warp. The model was aerodynamically pulsed in pitch throughout the flight of the model alone. Drag polars, normal force, pitching moment, static longitudinal stability, and wash effects at the horizontal tail were obtained. Comparisons are made with data from a similar model that had a flat (untwisted and uncambered) wing.
An analysis is presented of the influence of wing aspect ratio and tail location on the effects of compressibility upon static longitudinal stability. The investigation showed that the use of reduced wing aspect ratios or short tail lengths leads to serious reductions in high-speed stability and the possibility of high-speed instability.
Free-flight rocket-propelled model tests have been made to determine the effect of some wing geometry variables on low lift drag at Mach numbers from approximately 0.6 to 2.1. The pertinent results relate to 4- to 7-percent-thick 45 degree sweptback wings. At supersonic speeds, the wing drag was higher with the NACA 2-006 airfoil sections than with the NACA 65A006 airfoil sections particularly at the higher test Mach numbers where it was over 40 percent higher. Drooping the forward 20 percent of the wing 6 degrees increased the wing drag coefficient as much as 30 percent at supersonic speeds. Moving the wing vertically from the fuselage center line to the top of the fuselage increased the configuration drag substantially at supersonic speeds.