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 Serial/Series Title: NACA Wartime Reports
 Collection: National Advisory Committee for Aeronautics Collection
Heat-transfer coefficients for air flowing in round tubes, in rectangular ducts, and around finned cylinders

Heat-transfer coefficients for air flowing in round tubes, in rectangular ducts, and around finned cylinders

Date: February 1, 1945
Creator: Drexel, Rober E & Mcadams, William H
Description: Report reviews published data and presents some new data on heat transfer to air flowing in round tubes, in rectangular ducts, and around finned cylinders. The available data for heat transfer to air in straight ducts of rectangular and circular cross section have been correlated in plots of Stanton number versus Reynolds number to provide a background for the study of the data for finned cylinders. Equations are recommended for both the streamlined and turbulent regions, and data are presented for the transition region between turbulent and laminar flow. Use of hexagonal ends on round tubes causes the characteristics of laminar flow to extend to high Reynolds numbers. Average coefficients for the entire finned cylinder have been calculated from the average temperature at the base of the fins and an equation which was derived to allow for the effectiveness of the fins. The available results for each finned cylinder are correlated herein in terms of graphs of Stanton number versus Reynolds number. In general, for a given Reynolds number, the Stanton number increases with increases in both spacing and width of the fins, and is apparently independent of cylinder diameter and temperature difference. For a given coefficient of heat transfer ...
Contributing Partner: UNT Libraries Government Documents Department
Investigation of flow in an axially symmetrical heated jet of air

Investigation of flow in an axially symmetrical heated jet of air

Date: December 1, 1943
Creator: Corrsin, Stanley
Description: The work done under this contract falls essentially into two parts: the first part was the design and construction of the equipment and the running of preliminary tests on the 3-inch jet, carried out by Mr. Carl Thiele in 1940; the second part consisting in the measurement in the 1-inch jet flow in an axially symmetrical heated jet of air. (author).
Contributing Partner: UNT Libraries Government Documents Department
Torsion tests of stiffened circular cylinders

Torsion tests of stiffened circular cylinders

Date: May 1, 1944
Creator: Moore, R L & Wescoat, C
Description: The design of curved sheet panels to resist shear involves a consideration of several factors: the buckling resistance of the sheet, the stress at which buckling becomes permanent, and the strength which may be developed beyond the buckling limit by tension-field action. Although some experimental as well as theoretical work has been done on the buckling and tension-field phases of this problem, neither of these types of action appears to be very well understood. The problem is of sufficient importance from the standpoint of aircraft design, it is believed, to warrant further experimental investigation. This report presents the results of the first series of torsion tests of stiffened circular cylinders to be completed in connection with this study at Aluminum Research Laboratories. (author).
Contributing Partner: UNT Libraries Government Documents Department
Design charts for cross-flow tubular intercoolers charge-across-tube type

Design charts for cross-flow tubular intercoolers charge-across-tube type

Date: January 1, 1941
Creator: Valerino, Michael F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Design charts for cross-flow tubular intercoolers charge-through-tube type

Design charts for cross-flow tubular intercoolers charge-through-tube type

Date: July 1, 1941
Creator: Valerino, Michael F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Calculations of intake-air cooling resulting from water injection and of water recovery from exhaust gas

Calculations of intake-air cooling resulting from water injection and of water recovery from exhaust gas

Date: August 1, 1944
Creator: Rotherock, Addison M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of fuel volatility on performance of a Wright R-2600-8 engine as influenced by mixture distribution

Effect of fuel volatility on performance of a Wright R-2600-8 engine as influenced by mixture distribution

Date: September 1, 1944
Creator: Engelman, Helmuth W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Economy of internally cooling only the overheated cylinders of aircraft engines

Economy of internally cooling only the overheated cylinders of aircraft engines

Date: July 1, 1945
Creator: Henneberry, Hugh M.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Characteristics of the BMW 801D2 automatic engine control as determined from bench tests

Characteristics of the BMW 801D2 automatic engine control as determined from bench tests

Date: April 1, 1945
Creator: Addie, A N
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 high temperature of the cylinder head on the knocking tendency of an air-cooled engine cylinder

The effect of high temperature of the cylinder head on the knocking tendency of an air-cooled engine cylinder

Date: February 1, 1945
Creator: Peters, M D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of humidity on several supercharger parameters

Effect of humidity on several supercharger parameters

Date: November 1, 1941
Creator: Goldstein, Arthur W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The cross-flow plate-type intercooler

The cross-flow plate-type intercooler

Date: April 1, 1942
Creator: Valerino, Michael F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Artificial running-in of piston rings

Artificial running-in of piston rings

Date: March 1, 1944
Creator: Machlin, E S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A cooling correlation equation for a double-row radial engine based on the temperature of the exhaust-valve seat

A cooling correlation equation for a double-row radial engine based on the temperature of the exhaust-valve seat

Date: April 1, 1945
Creator: Black, Fred O , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A cooling correlation of the Wright R-2600-8 engine showing the effect of water as an internal coolant

A cooling correlation of the Wright R-2600-8 engine showing the effect of water as an internal coolant

Date: February 1, 1945
Creator: Engelman, Helmuth W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Cooling of a double-row radial engine by water injection to the individual cylinders

Cooling of a double-row radial engine by water injection to the individual cylinders

Date: February 1, 1945
Creator: Friedman, Harold E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Computation of the mean tangential velocity of the air leaving the blade tips of a centrifugal supercharger

Computation of the mean tangential velocity of the air leaving the blade tips of a centrifugal supercharger

Date: August 1, 1945
Creator: Brown, W Byron
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Consideration of auxiliary jet propulsion for assisting take-off

Consideration of auxiliary jet propulsion for assisting take-off

Date: May 1, 1940
Creator: Turner, L Richard
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of inlet-air temperature and cylinder displacement on charge temperature of internal combustion engines

Effect of inlet-air temperature and cylinder displacement on charge temperature of internal combustion engines

Date: January 1, 1944
Creator: Bolz, Ray E
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
The effect of increased cooling surface on performance of aircraft-engine cylinders as shown by tests of the NACA cylinder

The effect of increased cooling surface on performance of aircraft-engine cylinders as shown by tests of the NACA cylinder

Date: July 1, 1944
Creator: Ellerbrock, Herman H , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of increasing the size of the valve-guide boss on the exhaust-valve temperature and the volumetric efficiency of an aircraft cylinder

Effect of increasing the size of the valve-guide boss on the exhaust-valve temperature and the volumetric efficiency of an aircraft cylinder

Date: February 1, 1945
Creator: Peters, Max D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Calculations of economy of 18-cylinder radial aircraft engine with exhaust-gas turbine geared to the crankshaft at cruising speed

Calculations of economy of 18-cylinder radial aircraft engine with exhaust-gas turbine geared to the crankshaft at cruising speed

Date: January 1, 1945
Creator: Zimmerman, Richard H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
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