The test facility and initial test program developed to experimentally measure the fluid forces induced by annular gas seals is described. A comparison of theoretically predicted and experimentally obtained data for smooth and honeycomb seals is provided. And a comparison of experimental data from the tests of three smooth-rotor/smooth-stator seals is provided. The leakage of the working fluid through the seal, the pressure gradient along the seal length, entrance pressure-loss data, and rotordynamic coefficients provide a basis for comparison. A short discussion on seal theory is included, and various rotordynamic coefficient identification schemes are described
A flight experiment designed to demonstrate current cryogenic heat pipe technology was defined and e...
An assessment of S-band communication equipment includes: (1) the review and analysis of the ability...
Low speed aerodynamic characteristics of a thrust augmenter wing suitable for vertical operation wer...
The performance of two critical technology components required for a continuously rotatable heat pip...
The feasibility of accomplishing selected atmospheric science mission using a pallet-only mode was s...
Pressure and heat transfer tests were conducted simulating flight conditions which the space shuttle...
A program was conducted to evaluate and characterize the carbon dioxide-methane (CO2-CH4) decomposit...
Restructuring research objectives from a technical readiness demonstration program to an investigati...
Test program for determining visual reference requirements for pilot control of gliding parachutes u...
The extent of convective and radiative heating for a Titan aerocapture vehicle is investigated. The ...
A physiological date telemetry system, consisting basically of a portable unit and a ground base sta...
A nitrogen supply subsystem based on the dissociation of hydrazine into a mixture of hydrogen and ni...
Postoperational test results for command, control, and functional subsystem degradation on ESSA 4 sp...
The design of the high resolution imager (HRI) on HEAO 2 was modified for use in the instrument comp...
The Combined Surface Blowing (CSB) V/STOL lift/propulsion system consists of a blown flap system whi...
A flight experiment designed to demonstrate current cryogenic heat pipe technology was defined and e...
An assessment of S-band communication equipment includes: (1) the review and analysis of the ability...
Low speed aerodynamic characteristics of a thrust augmenter wing suitable for vertical operation wer...
The performance of two critical technology components required for a continuously rotatable heat pip...
The feasibility of accomplishing selected atmospheric science mission using a pallet-only mode was s...
Pressure and heat transfer tests were conducted simulating flight conditions which the space shuttle...
A program was conducted to evaluate and characterize the carbon dioxide-methane (CO2-CH4) decomposit...
Restructuring research objectives from a technical readiness demonstration program to an investigati...
Test program for determining visual reference requirements for pilot control of gliding parachutes u...
The extent of convective and radiative heating for a Titan aerocapture vehicle is investigated. The ...
A physiological date telemetry system, consisting basically of a portable unit and a ground base sta...
A nitrogen supply subsystem based on the dissociation of hydrazine into a mixture of hydrogen and ni...
Postoperational test results for command, control, and functional subsystem degradation on ESSA 4 sp...
The design of the high resolution imager (HRI) on HEAO 2 was modified for use in the instrument comp...
The Combined Surface Blowing (CSB) V/STOL lift/propulsion system consists of a blown flap system whi...
A flight experiment designed to demonstrate current cryogenic heat pipe technology was defined and e...
An assessment of S-band communication equipment includes: (1) the review and analysis of the ability...
Low speed aerodynamic characteristics of a thrust augmenter wing suitable for vertical operation wer...