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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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At least 127 records · Page 7

All sources NASA NTRS DOE OSTI

NASA NTRS1965

Self-starting multistep methods for the numerical integration of ordinary differential equations

Self-starting multistep methods for numerical integration of ordinary differential equations

DIFFERENTIAL EQUATION↗

NASA NTRS1966

Electrodeless discharge lamp is easily started, has high stability

Electrodeless discharge borosilicate glass lamp is used in various high-resolution optical systems. It is partially charged with krypton, contains small amounts of rubidium, and is enclosed in a hermetically sealed envelope that maintains the lamp at an optimum temperature during discharge. The lamp is quickly started by its excitation coil.

Bell, W. E.↗

NASA NTRS1966

Electric arc heater is self starting

Remote method initiates an electric arc over a large range of gaps between two water-cooled electrodes of an arc-heated wind tunnel without disassembling the arc unit. This type of starting system can be used on both three-phase ac arc heaters and dc arc heaters.

Brown, R. D.↗

NASA NTRS1966

Power arc welder touch-started with consumable electrode

Power arc welder formed as a hand-held welding gun touch-starts, retracts a consumable electrode to create the desired arc, and then commences feeding of the consumable electrode at the rate required to form the intended bead or spot. This device achieves uniform spot welds repeatedly.

Jeannette, J. C.↗

NASA NTRS1965

An experimental correlation of the nonreactive properties of injection schemes and combustion effects in a liquid-propellant rocket engine. Part VI - The relation between the starting transient and injection hydraulics

Gas pressurized, liquid bipropellant injection feed system starting flow transient criteria - effects on combustion stability

FEED SYSTEM↗

NASA NTRS1966

Starting Salaries of Engineers and Scientists

Starting salaries of engineers and scientists - patterns of demand affecting changes in salary since World War II

SCIENTIST↗

NASA NTRS1966

Optimal free-space fixed-thrust trajectories using impulsive trajectories as starting iteratives.

Optimal free-space fixed thrust trajectories using impulsive trajectories as starting iteratives

NEWTON-RAPHSON METHOD↗

NASA NTRS1965

Optimum nuclear rocket start-up to develop full power at exact time with consideration of noise.

Random noise effects and optimal control of nuclear rocket start-up for rapid and precise attainment of full power

RANDOM NOISE↗

NASA NTRS1966

Optimal free-space fixed-thrust trajectories using impulsive trajectories as starting iteratives.

Optimal free-space fixed thrust trajectories using impulsive trajectories as starting iteratives

TRAJECTORY OPTIMIZATION↗

NASA NTRS1965

Studies related to the development of a multiple start-stop solid propellant rocket motor

Multiple start-stop solid propellant rocket motor using highly aluminized ammonium perchlorate annular propellant grains

SOLID PROPELLANT ROCKET ENGINE↗

NASA NTRS1968

Injection start of a Brayton cycle turbocompressor operating on gas bearings in a closed loop

Experimental evaluation of gas injection start of Brayton cycle turbocompressor operating on gas bearings

Evans, R. C.↗

NASA NTRS1969

Self-starting circuit for switching regulators

Schematic is provided on a self-starting circuit for a switching regulator which uses a logic circuit to sense a change in output voltage and provides a correction signal for dc power sources. With this device, the total power consumed by the logic circuitry is held to a minimum, and the circuit receives the optimum regulated supply power.

Schraut, E. H.↗

NASA NTRS1969

Prediction of performance of centrifugal pumps during starts under pressure

Method which calculates start-up characteristics of centrifugal pumps reveals a capacity to predict pressure drop characteristics of pumps with vaned diffusers. Calculations are based on pump geometry, design-point flow, speed, and pressure rise, and the pump characteristic within range of approximately ten percent of the design-point flow.

Rostafinski, W.↗

NASA NTRS1968