"An exploratory investigation at Mach number 2.72 has been made to show the decrease in the drag of a round-nose model achieved by mounting a small cone on a rod ahead of the nose. The geometric parameters which were varied were the cone-base diameter, cone angle, and rod length. All models showed large decreases in drag compared to that of the round nose alone" (p. 1).

"The steady pressure loads as well as the temperature change on adjacent surfaces due to the presence of a propulsive jet at subsonic speeds is shown to be insignificant. Whereas at supersonic speeds the temperature effect might be expected to remain insignificant, the steady pressure loads were shown to increase greatly on surfaces downstream of the propulsive jet exit" (p. 1).

"The steady pressure loads as well as the temperature change on adjacent surfaces due to the presence of a propulsive jet at subsonic speeds is shown to be insignificant. Whereas at supersonic speeds the temperature effect might be expected to remain insignificant, the steady pressure loads were shown to increase greatly on surfaces downstream of the propulsive jet exit" (p. 1).

Report presenting an investigation in the high-speed tunnel of the effects at high subsonic speeds of horizontal-tail height on the aerodynamic and loading characteristics in sideslip of a 45 degree sweptback, untapered tail assembly. Configurations investigated include the fuselage alone, the fuselage plus vertical tail, and with a horizontal tail mounted at 0, 50, and 100 percent vertical-tail span. Results regarding the lateral force coefficient, rolling-moment coefficient, and a comparison of experimental and theoretical results are provided.

Memorandum presenting a wind tunnel investigation to determine the effects of an airfoil section modification consisting of a greatly increased leading-edge radius and slight forward camber on the aerodynamic characteristics of a thin swept-wing-body combination at Mach numbers from 0.06 to 1.9. The tests showed that full-span modification of the wing resulted in very marked improvement in stability, drag, and high-lift characteristics for the configuration at low speeds due to the maintenance of attached flow over the wing to high lift coefficients.

Design data, specifications, and drawings are preserted for control rod absorber plates for the Army Package Power Reactor critical experiment. (L.T.W.)

Invoice for items sold for Sugarland Industries by the Live Stock Commission Company, including the pricing and amount of cattle sold.

A corrosion testing program has been initiated in Purex and Redox storage tanks to obtain corrosion data on SAE 1020 carbon steel, two alloy-high strength steels, and an alloy steel in neutralized process wastes.