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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: NACA Memorandum Report
 Collection: Technical Report Archive and Image Library
Determination of air-consumption parameters for two radial aircraft engines

Determination of air-consumption parameters for two radial aircraft engines

Date: August 1, 1945
Creator: Howes, William
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of compression ratio on knock limits of high-performance fuels in a CFR engine I : blends of triptane and 28-R fuel

The effect of compression ratio on knock limits of high-performance fuels in a CFR engine I : blends of triptane and 28-R fuel

Date: February 10, 1945
Creator: Tower, Leonard K
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Effect of Compression Ratio on Knock Limits of High-Performance Fuels in a CFR Engine II : Blends of 2,2,3-Trimethylpentane with 28-R

The Effect of Compression Ratio on Knock Limits of High-Performance Fuels in a CFR Engine II : Blends of 2,2,3-Trimethylpentane with 28-R

Date: February 10, 1945
Creator: Tower, Leonard K
Description: The knock-limited performance of blends of 0,50; and 100 percent by volume of 2,2,3-trimethylpentane in 28-R fuel determined with a modified F-4 engine at three sets of conditions varying from severe to mild at each of three compression ratios (6.0, 8.0, and 10.0). A comparison of the knock-limited performance of 2,2,3-trimethylpentane with that of triptane (2,2,3-trimethylbutane) is included. The knock-Limited performance of 2,2,3-trimethylpontane was usually more sensitive to either compression ratio or inlet-air temperature than 28-R fuel, but the ratio of the knock-limited indicated mean effective pressure of a given blend containing 2,2,3-trimethypentane and 28-R to the indicated mean effective pressure of 28-R alone was not greatly affected by compression ratio if the engine operating conditions were mild. Although 2,2,3-trimethylpentane in general had a lower knock-limited performance than triptane, the characteristics of the two fuels were somewhat similar.
Contributing Partner: UNT Libraries Government Documents Department
The effect of compression ratio on knock limits of high-performance fuels in a CFR engine III : blends of 2,3-dimethylpentane with 28-R

The effect of compression ratio on knock limits of high-performance fuels in a CFR engine III : blends of 2,3-dimethylpentane with 28-R

Date: February 10, 1945
Creator: Tower, Leonard K
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of engine-operating variables and internal coolants on spark-advance requirements of a liquid-cooled cylinder

Effect of engine-operating variables and internal coolants on spark-advance requirements of a liquid-cooled cylinder

Date: May 1, 1945
Creator: Lietzke, A F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of ethylene dibromide on the knock-limited performance of leaded and nonleaded S reference fuel

The effect of ethylene dibromide on the knock-limited performance of leaded and nonleaded S reference fuel

Date: February 1, 1946
Creator: Niemi, Richard O
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of fuel volatility and mixture temperature on the knocking characteristics of a liquid-cooled single-cylinder test engine

Effect of fuel volatility and mixture temperature on the knocking characteristics of a liquid-cooled single-cylinder test engine

Date: April 1, 1945
Creator: Lietzke, A F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of high-resistance ignition cable on the erosion of spark-plug electrodes

The effect of high-resistance ignition cable on the erosion of spark-plug electrodes

Date: September 1, 1945
Creator: Rodgers, Franklin A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of increase in combustion-air inlet temperature from 80 to 130 F on the sea-level performance of a 22-inch-diameter pulse-jet engine

The effect of increase in combustion-air inlet temperature from 80 to 130 F on the sea-level performance of a 22-inch-diameter pulse-jet engine

Date: July 1, 1946
Creator: Hughes, Richard F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of internal coolants on the knock-limited performance of an Allison V-1710-99 engine with a compression ratio of 6.0

Effect of internal coolants on the knock-limited performance of an Allison V-1710-99 engine with a compression ratio of 6.0

Date: June 1, 1945
Creator: Brun, Rinaldo J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of liquid and ice particles on the erosion of a supercharger-inlet cover and diffuser vanes

The effect of liquid and ice particles on the erosion of a supercharger-inlet cover and diffuser vanes

Date: June 1, 1946
Creator: Rollin, Vern G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of Mach and Reynolds numbers on the maximum lift coefficient obtainable in gradual and abrupt stalls of a pursuit airplane equipped with a low-drag wing

Effect of Mach and Reynolds numbers on the maximum lift coefficient obtainable in gradual and abrupt stalls of a pursuit airplane equipped with a low-drag wing

Date: July 6, 1945
Creator: Blair, William K
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of Mach number on the aerodynamic characteristics of a single-engine pursuit airplane as determined from tests of a 1/3-scale model

The effect of Mach number on the aerodynamic characteristics of a single-engine pursuit airplane as determined from tests of a 1/3-scale model

Date: May 3, 1945
Creator: Jessen, Henry
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
The effect of modified baffles and auxiliary-cooling ducts on the cooling of a double-row radial engine

The effect of modified baffles and auxiliary-cooling ducts on the cooling of a double-row radial engine

Date: March 1, 1945
Creator: Geisenheyner, Robert M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of NACA injection impeller and ducted head baffles on flight cooling performance of double-row radial engine in four-engine heavy bomber

Effect of NACA injection impeller and ducted head baffles on flight cooling performance of double-row radial engine in four-engine heavy bomber

Date: April 1, 1945
Creator: Vensel, Joseph R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of six aromatic amines on the preignition-limited performance of 28-R aviation fuel in a CFR engine

The effect of six aromatic amines on the preignition-limited performance of 28-R aviation fuel in a CFR engine

Date: May 1, 1945
Creator: Male, Donald W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of some design parameters on ditching characteristics

The effect of some design parameters on ditching characteristics

Date: July 1, 1945
Creator: Dawson, John R
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
The effect of the skis on the power-off stability characteristics of a twin-engine cargo airplane

The effect of the skis on the power-off stability characteristics of a twin-engine cargo airplane

Date: June 18, 1945
Creator: Wong, Park Y
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of valve clearance on knock-limited performance and engine cooling

The effect of valve clearance on knock-limited performance and engine cooling

Date: April 1, 1945
Creator: Brown, Kenneth D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of Water-Alcohol Injection and Maximum Economy Spark Advance on Knock-Limited Performance and Fuel Economy of a Large Air-Cooled Cylinder

Effect of Water-Alcohol Injection and Maximum Economy Spark Advance on Knock-Limited Performance and Fuel Economy of a Large Air-Cooled Cylinder

Date: August 1, 1945
Creator: Heinicke, Orville H. & Vandeman, Jack E.
Description: An investigation was conducted to determine the effect of a coolant solution of 25 percent ethyl alcohol, 25 percent methyl alcohol, and 50 percent water by volume and maximum-economy spark advance on knock-limited performance and fuel economy of a large air-cooled cylinder. The knock-limited performance of the cylinder at engine speeds of 2100 and 2500 rpm was determined for coolant-fuel ratios of 0.0, 0.2, and 0.4. The effect of water-alcohol injection on fuel economy was determined in constant charge-air flow tests. The tests were conducted at a spark advance of 20 deg B.T.C. and maximum-economy spark advance.
Contributing Partner: UNT Libraries Government Documents Department
Efficiency of a radial-flow exhaust-gas turbosupercharger turbine with a 12.75-inch tip diameter

Efficiency of a radial-flow exhaust-gas turbosupercharger turbine with a 12.75-inch tip diameter

Date: July 1, 1946
Creator: Gabriel, David S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Endurance tests of a 22-inch-diameter pulse-jet engine with a neoprene-coated valve grid

Endurance tests of a 22-inch-diameter pulse-jet engine with a neoprene-coated valve grid

Date: October 1, 1945
Creator: Breisch, John H
Description: None
Contributing Partner: UNT Libraries Government Documents Department