Thermal shock resistance and high-temperature strength of a molybdenum disilicide - aluminum oxide ceramic (open access)

Thermal shock resistance and high-temperature strength of a molybdenum disilicide - aluminum oxide ceramic

From Summary: "A ceramic consisting nominally of 75 percent molybdenum disilicide and 25 percent alumium oxide was investigated to determine its thermal shock characteristics and high-temperature strength properties. In a rim-quench thermal shock evaluation, the material was found to be superior to pure molybdenum disilicide. In a simulated altitude blow-out test, the material withstood an average of 2.5 cycles when quenched from 1800 degrees Fahrenheit."
Date: October 1, 1953
Creator: Maxwell, W. A. & Smith, R. W.
System: The UNT Digital Library
Some Experimental Effects of Afterbody Shape on the Zero-Lift Drag of Bodies for Mach Numbers Between 0.8 and 1.3 (open access)

Some Experimental Effects of Afterbody Shape on the Zero-Lift Drag of Bodies for Mach Numbers Between 0.8 and 1.3

Report presenting zero-lift drag data for a series of fin-stabilized bodies differing only in afterbody shape. Three series of afterbodies with varying ratios of base radium to maximum radius were combined with a fineness-ratio-7.13 parabolic nose. Results regarding the total drag, drag breakdown, comparison of experimental and theoretical afterbody pressure drag, and afterbody design criteria are provided.
Date: October 1, 1953
Creator: Stoney, William E., Jr.
System: The UNT Digital Library
Considerations in the adaptation of low-cost fuels to gas-turbine-powered commercial aircraft (open access)

Considerations in the adaptation of low-cost fuels to gas-turbine-powered commercial aircraft

"In recent months interest has increased in the possible use of distillate and residual fuel oils as fuels for commercial gas-turbine aircraft. However, the use of such fuels entails the solution of many problems pertaining to fuel physical properties and combustion characteristics. This report reviews some of these problems and discusses the status of current knowledge in relation to their solution" (p. 1).
Date: October 1, 1953
Creator: Barnett, Henry C. & McCafferty, Richard J.
System: The UNT Digital Library
Summary of Rocket-Model Tests at Zero Lift of the Northrop MX-775B Missile Configuration from Mach Numbers of 0.9 to 1.8 (open access)

Summary of Rocket-Model Tests at Zero Lift of the Northrop MX-775B Missile Configuration from Mach Numbers of 0.9 to 1.8

Flight tests were conducted between Mach numbers of 0.9 and 1.8 over a Reynolds number range of 9(exp 6) to 30(exp 6) to determine the zero-lift drag and some rolling-effectiveness characteristics of the Northrop MX -775B missile with small and large body. The MX-775B is a proposed long range, supersonic, ground-to-ground missile having an arrow wing with 67.5 degree leading-edge sweep, 15 deg trailing-edge sweep, and a modified NACA 0004 airfoil section. The configuration has no horizontal tail but has wing trailing-edge elevons which serve a dual purpose as elevators and ailerons. The ratio of body frontal area to wing plan-form area is 0.0127 for the small-body configuration and 0.0330 for the large-body configuration.
Date: October 1, 1953
Creator: Arbic, Richard G. & Gillespie, Warren, Jr.
System: The UNT Digital Library