Development of an air flow thermal balance calorimeter
Air flow thermal balance calorimeter for measuring heat evolved by spaceborne nickel cadmium cells
Sherfey, J. M.↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Force-Balanced, Throttle Valve Patent
Force balanced throttle valve for fuel control in rocket engines
Mcdougal, A. R.↗
Subsonic static characteristics of slender wing configurations using a magnetic suspension and balance system
Subsonic static characteristics of slender wing configurations using magnetic suspension and balance system
Covert, E.↗
Mass-energy balance for an S-1C rocket exhaust cloud during static firing
Rocket exhaust cloud mass-energy balance measurements for Saturn S1-C static firing
Forbes, R. E.↗
Maximum likelihood analysis of balanced incomplete block models
Maximum likelihood analysis of balanced incomplete blocks, and amall-sample properties of maximum likelihood estimates
Kutner, M. H.↗
The oxygen and carbon dioxide balance in the earth's atmosphere
Earth atmosphere origin, discussing oxygen and carbon dioxide balance
Johnson, F. S.↗
University of Virginia superconducting wind- tunnel balance
Supersonic wind tunnel electromagnetic balance with superconducting coils
Hamlet, I. L.↗
An experimental study of the ion chemistry and thermal balance in the E- and F-regions above Wallops Island
E and F region positive ion composition, electron concentration and thermal balance vertical profile, discussing ionizing radiation spectrum, plasma cooling, primary chemical reaction rates and ionospheric formation
Brace, L. H.↗
The dynamic characteristics of a five component oscillating balance
Frequency response of five component strain gage oscillating balance for dynamic wind tunnel stability testing
Tcheng, P.↗
Assessment of renal hemodynamic factors in whole kidney glomerulotubular balance
Renal hemodynamic factors in whole kidney glomerulotubular balance in anesthetized dogs by manipulating filtration rate through constriction of aorta, thoracic vena cava, etc
Daugharty, T. M.↗
Flexible rotor balancing by the exact point- speed influence coefficient method
Flexible rotor balancing by exact point speed influence coefficient method
Anderson, W. J.↗
Balanced-bellows spirometer
Compact balanced-bellows dry type spirometer was designed to be insensitive to acceleration fields along any or all coordinate axes. It provides true indication of respiratory action of test subject without need for calibration in acceleration fields.
Holden, G. G.↗
Calcium and nitrogen balance, experiment M007
The collection of data on the response of the skeletal and muscular systems to 14-day space flights was evaluated for loss of calcium, nitrogen, and other metabolically related elements. Considerable interindividual variability was demonstrated in all experimental factors that were measured. Calcium balance became less positive and urinary phosphate excretion increased substantially in flight despite a reduction in phosphate intake. Patterns of excretion of magnesium, sodium, potassium, and chloride were different for each subject, and, in part, could be correlated with changes in adrenocortical steroid production. The principal hormonal change was a striking decrease during flight in the urinary excretion of 17-hydroxycortocosteroids. Dermal losses of calcium, magnesium, sulfate, and phosphate were insignificant during all three phases.
Whedon, G. D.↗
Subsonic and supersonic static aerodynamic characteristics of a family of bulbous base cones measured with a magnetic suspension and balance system
Results of subsonic and supersonic wind-tunnel tests with a magnetic balance and suspension system on a family of bulbous based cone configurations are presented. At subsonic speeds the base flow and separation characteristics of these configurations is shown to have a pronounced effect on the static data. Results obtained with the presence of a dummy sting are compared with support interference free data. Support interference is shown to have a substantial effect on the measured aerodynamic coefficient.
Vlajinac, M.↗
A force balance system for the measurement of skin friction drag force
Research on force balance instrumentation to measure the skin friction of hypersonic vehicles at extreme temperatures, high altitudes and in a vibration field is discussed. A rough overall summary and operating instructions for the equipment are presented.
Moore, J. W.↗
Design study of shaft face seal with self-acting lift augmentation. 4: Force balance
A method for predicting the operating film thickness of self-acting seals is described. The analysis considers a 16.76-cm mean diameter seal that is typical of large gas turbines for aircraft. Four design points were selected to cover a wide range of operation for advanced engines. This operating range covered sliding speeds of 61 to 153 m/sec, sealed pressures of 45 to 217 N/sq cm abs, and gas temperatures of 311 to 977 K. The force balance analysis revealed that the seal operated without contact over the operating range with gas film thicknesses ranging between 0.00046 to 0.00119 cm, and with gas leakage rates between 0.01 to 0.39 scmm.
Ludwig, L. P.↗
Development of an air flow thermal balance calorimeter
An air flow calorimeter, based on the idea of balancing an unknown rate of heat evolution with a known rate of heat evolution, was developed. Under restricted conditions, the prototype system is capable of measuring thermal wattages from 10 milliwatts to 1 watt, with an error no greater than 1 percent. Data were obtained which reveal system weaknesses and point to modifications which would effect significant improvements.
Sherfey, J. M.↗
Compilation of weights, balance, CG, and moments of inertia for sounding rocket payloads
A compilation of weight, balance, center of gravity, and moments of inertia of various sounding rocket payloads are presented. A permanent record of the physical characteristics of sounding rocket payloads in one location is provided. Data for the weight of payloads which the sounding rockets can support are developed. Illustrations of various sounding rockets to show the space available for payloads are included.
Wolff, J. J., Jr.↗