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 Decade: 1940-1949
 Serial/Series Title: NACA Memorandum Report
 Collection: National Advisory Committee for Aeronautics Collection
Single-cylinder oil-control tests of porous chrome plated cylinder barrels for radial air-cooled engines

Single-cylinder oil-control tests of porous chrome plated cylinder barrels for radial air-cooled engines

Date: January 1, 1946
Creator: Swikert, Max
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Wind-tunnel investigation of the effects of spoilers on the characteristics of a low-drag airfoil equipped with a 0.25-chord slotted flap

Wind-tunnel investigation of the effects of spoilers on the characteristics of a low-drag airfoil equipped with a 0.25-chord slotted flap

Date: July 23, 1945
Creator: Holtzclaw, Ralph W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An investigation of a thermal ice-prevention system for a C-46 cargo airplane V : effect of thermal system on airplane cruise performance

An investigation of a thermal ice-prevention system for a C-46 cargo airplane V : effect of thermal system on airplane cruise performance

Date: January 13, 1945
Creator: Selna, James
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of the performance of a turbosupercharged engine of an exhaust-gas-to-air heat exchanger for thermal ice prevention

Effect of the performance of a turbosupercharged engine of an exhaust-gas-to-air heat exchanger for thermal ice prevention

Date: August 1, 1945
Creator: Look, Bonne C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Tests of a thermal ice-prevention system for a wing leading-edge landing-light installation

Tests of a thermal ice-prevention system for a wing leading-edge landing-light installation

Date: December 11, 1944
Creator: Hillendahl, Wesley H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of Maximum Cruise-Power Operation at Ultra-Lean Mixture and Increased Spark Advance on the Mechanical Condition of Cylinder Components

Effect of Maximum Cruise-Power Operation at Ultra-Lean Mixture and Increased Spark Advance on the Mechanical Condition of Cylinder Components

Date: September 1, 1945
Creator: Harris, Herbert B.; Duffy, Robert T. & Erwin, Robert D., Jr.
Description: A continuous 50-hour test was conducted to determine the effect of maximum cruise-power operation at ultra-lean fuel-air mixture and increased spark advance on the mechanical conditions of cylinder components. The test was conducted on a nine-cylinder air-cooled radial engine at the following conditions:brake horsepower, 750; engine speed, 1900 rpm; brake mean effective pressure, 172 pounds per square inch; fuel-air ratio, 0.052; spark advance, 30 deg B.T.C.; and maximum rear-spark-plug-bushing temperature, 400 F. In addition to the data on corrosion and wear, data are presented and briefly discussed on the effect of engine operation at the conditions of this test on economy, knock, preignition, and mixture distribution. Cylinder, piston, and piston-ring wear was small and all cylinder component were in good condition at the conclusion of the 50-hour test except that all exhaust-valve guides were bellmouthed beyond the Army's specified limit and one exhaust-valve face was lightly burned. It is improbable that the light burning in one spot of the valve face would have progressed further because the burn was filled with a hard deposit so that the valve face formed an unbroken seal and the mating seat showed no evidence of burning. The bellmouthing of the exhaust-valve guides is believed ...
Contributing Partner: UNT Libraries Government Documents Department
Measurements of the flying qualities of a Bell P-39D-1 airplane (AAF NO. 41-28378)

Measurements of the flying qualities of a Bell P-39D-1 airplane (AAF NO. 41-28378)

Date: September 1, 1943
Creator: Hoover, H H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Attainment of a straight-line trajectory for a preset guided missile with special reference to effect of wind or target motion

Attainment of a straight-line trajectory for a preset guided missile with special reference to effect of wind or target motion

Date: August 1, 1945
Creator: Ribner, Herbert S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Rubber conductors for aircraft ignition cables

Rubber conductors for aircraft ignition cables

Date: November 1, 1945
Creator: Dietrich, Joseph R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Two-dimensional wind-tunnel investigation of 0.20-airfoil-chord plain ailerons of different contour on an NACA 65(sub 1)-210 airfoil section

Two-dimensional wind-tunnel investigation of 0.20-airfoil-chord plain ailerons of different contour on an NACA 65(sub 1)-210 airfoil section

Date: December 1, 1945
Creator: Cahill, Jones F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
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