TEE INTERFERENCE EFFECTS OF A BODY ON THE SPANWISE LOAD DISTRIBUTIONS OF TWO 45 ° SWEPTBACK W_GS OF ASPECT RATIO 8.02 FROM LOW-SPEED TESTS I

Tests of two wing-body combinations have been conducted in the Langley 19-foot pressure tunnel at a Reynolds number of 4 x 106 and a Mach number of 0.19 to determine the effects of the bodies on the wing span load distributions. The wings had 45 ° sweepback of the quarter-chord line, aspect ratio 8.02, taper ratio 0.45, and incorporated 12-percent-thick airfoil sections streamwise. One wing was untwisted and uncambered whereas the second wing incorporated both twist and camber. Identical bodies of revolution, of i0:i fineness ratio, having diameter-to-span ratios of 0.i0, were mounted in mid-high-wing arrangements. The effects of wing incidence, wing fences, and flap deflection were deter-mined for the plane uncambered wing. The addition of the body to the plane wing increased the exposed wing loading at a given lift coefficient as much as lO percent with the body at 0 ° incidence and 4 percent at 4 ° incidence. The body-induced lift disappeared near maximum lift in both cases. The bending-momen