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 Decade: 1940-1949
 Collection: National Advisory Committee for Aeronautics Collection
NACA Mach number indicator for use in high-speed tunnels

NACA Mach number indicator for use in high-speed tunnels

Date: July 1, 1943
Creator: Smith, Norman F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
NACA Investigation of a Jet-Propulsion System Applicable to Flight

NACA Investigation of a Jet-Propulsion System Applicable to Flight

Date: April 1, 1944
Creator: Brown, Clinton E.
Description: Following a brief history of the NACA investigation of jet-propulsion, a discussion is given of the general investigation and analyses leading to the construction of the jet-propulsion ground-test mock-up. The results of burning experiments and of test measurements designed to allow quantitative flight-performance predictions of the system are presented and correlated with calculations. These calculations are then used to determine the performance of the system on the ground and in the air at various speeds and altitudes under various burning conditions. The application of the system to an experimental airplane is described and some performance predictions for this airplane are made. It was found that the main fire could be restricted to an intense, small, and short annular blue flame burning steadily and under control in the intended combustion space. With these readily obtainable combustion conditions, the combustion chamber the nozzle walls and the surrounding structure could be maintained at normal temperatures. The system investigated was found to be capable of burning one-half the intake air up the fuel rates of 3 pounds per second. Calculations were shown to agree well with experiment. It was concluded that the basic features of the jet-propulsion system investigation in the ground-test mock-up were ...
Contributing Partner: UNT Libraries Government Documents Department
The propeller and cooling-air-flow characteristics of a twin-engine airplane model equipped with NACA D(sub S)-type cowlings and with propellers of NACA 16-series airfoil sections

The propeller and cooling-air-flow characteristics of a twin-engine airplane model equipped with NACA D(sub S)-type cowlings and with propellers of NACA 16-series airfoil sections

Date: September 1, 1944
Creator: Pepper, Edward
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Profile-drag coefficients of conventional and low-drag airfoils as obtained in flight

Profile-drag coefficients of conventional and low-drag airfoils as obtained in flight

Date: May 1, 1944
Creator: Zalovcik, J. A.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Review of flight tests of NACA C and D cowlings on the XP-42 airplane

Review of flight tests of NACA C and D cowlings on the XP-42 airplane

Date: April 1, 1943
Creator: Johnston, J Ford
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Emergency measures for increasing the range of fighter airplanes

Emergency measures for increasing the range of fighter airplanes

Date: May 1, 1943
Creator: Wetmore, Joseph W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The flow of a compressible fluid past a circular arc profile

The flow of a compressible fluid past a circular arc profile

Date: October 1, 1944
Creator: Kaplan, Carl
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The flow of a compressible fluid past a curved surface

The flow of a compressible fluid past a curved surface

Date: November 1, 1943
Creator: Kaplan, Carl
Description: None
Contributing Partner: UNT Libraries Government Documents Department
On the plane potential flow past a symmetrical lattice of arbitrary airfoils

On the plane potential flow past a symmetrical lattice of arbitrary airfoils

Date: January 1, 1944
Creator: Garrick, I E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A method for studying the hunting oscillations of and airplane with a simple type of automatic control

A method for studying the hunting oscillations of and airplane with a simple type of automatic control

Date: May 1, 1944
Creator: Jones, Robert T
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spin tests of two models of a low-wing monoplane to investigate scale effect in the model test range

Spin tests of two models of a low-wing monoplane to investigate scale effect in the model test range

Date: May 1, 1941
Creator: Donlan, Charles C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
On a new method for calculating the potential flow past a body of revolution

On a new method for calculating the potential flow past a body of revolution

Date: July 1, 1942
Creator: Kaplan, Carl
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Icing tests of aircraft-engine induction systems

Icing tests of aircraft-engine induction systems

Date: January 1, 1943
Creator: Kimball, Leo B
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Supplement to Comparison of automatic control systems

Supplement to Comparison of automatic control systems

Date: August 1, 1941
Creator: Oppelt, W
Description: This analysis deals with the indirect regulator, wherefrom the behavior of the direct regulator is deduced as a limiting case. The prime mover is looked upon as "independent of the load": a change in the adjusting power (to be applied) for the control link (as, for example, in relation to the adjusting path (eta) with pressure valves or the rudder of vessels) does not modify the actions of the prime mover. Mass forces and friction are discounted; "clearance" also is discounted in the transmission links of the regulator.
Contributing Partner: UNT Libraries Government Documents Department
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
The problem of longitudinal stability and control at high speeds

The problem of longitudinal stability and control at high speeds

Date: November 1, 1943
Creator: Allen, H. Julian
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Wind-tunnel procedure for determination of critical stability and control characteristics of airplanes

Wind-tunnel procedure for determination of critical stability and control characteristics of airplanes

Date: April 1, 1944
Creator: Belsley, Steven E.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A method for calculating heat transfer in the laminar flow region of bodies

A method for calculating heat transfer in the laminar flow region of bodies

Date: December 1, 1942
Creator: Look, Bonne C.
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 compressibility on two-dimensional tunnel-wall interference for a symmetrical airfoil

The effect of compressibility on two-dimensional tunnel-wall interference for a symmetrical airfoil

Date: January 1, 1943
Creator: Nitzberg, Gerald E
Description: Summary: The effective change in the velocity of flow past a wing section, caused by the presence of wind-tunnel walls, is known for potential flow. This theory is extended by investigation of the two-dimensional compressible flow past a thin Rankine Oval. It is shown that for a symmetrical section at zero angle of attack the velocity increment due to the tunnel walls in the incompressible case must be multiplied by the factor 1/1-M^2 to take account of compressibility effects. The Mach number, M, corresponds to conditions in the wind-tunnel test section with the model removed (p. 1.).
Contributing Partner: UNT Libraries Government Documents Department
The knock-limited performance of S reference fuel plus 2 milliliters of triethylthallium per gallon

The knock-limited performance of S reference fuel plus 2 milliliters of triethylthallium per gallon

Date: November 1, 1945
Creator: Meyer, Carl L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Performance of an exhaust-gas "blowdown" turbine on a nine-cylinder radial engine

Performance of an exhaust-gas "blowdown" turbine on a nine-cylinder radial engine

Date: December 1, 1944
Creator: Desmon, Leland G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An investigation of a thermal ice-prevention system for a C-46 cargo airplane III : description of thermal ice-prevention equipment for wings, empennage, and windshield

An investigation of a thermal ice-prevention system for a C-46 cargo airplane III : description of thermal ice-prevention equipment for wings, empennage, and windshield

Date: June 24, 1944
Creator: Spies, Ray J , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An investigation of a thermal ice-prevention system for a C-46 cargo airplane II : the design, construction, and preliminary tests of the exhaust-air heat exchanger

An investigation of a thermal ice-prevention system for a C-46 cargo airplane II : the design, construction, and preliminary tests of the exhaust-air heat exchanger

Date: June 20, 1944
Creator: Jackson, Richard
Description: None
Contributing Partner: UNT Libraries Government Documents Department