Results 91 to 100 of about 31,464 (166)

Transatmospheric vehicle research [PDF]

open access: yes
Research was conducted into the alternatives to the supersonic combustion ramjet (scramjet) engine for hypersonic flight. A new engine concept, the Oblique Detonation Wave Engine (ODWE) was proposed and explored analytically and experimentally.
Adelman, Henry G., Cambier, Jean-Luc
core   +1 more source

Status of research into lightning effects on aircraft [PDF]

open access: yes
Developments in aircraft lightning protection since 1938 are reviewed. Potential lightning problems resulting from present trends toward the use of electronic controls and composite structures are discussed, along with presently available lightning test ...
Plumer, J. A.
core   +1 more source

Spark Ignition of Monodisperse Fuel Sprays [PDF]

open access: yes
A study of spark ignition energy requirements was conducted with a monodisperse spray system allowing independent control of droplet size, equivalent ratio, and fuel type.
Cernansky, Nicholas P.   +2 more
core   +1 more source

Composite solid propellant flame microstructure determination Annual report, 23 Jun. 1967 - 22 Jun. 1968 [PDF]

open access: yes
Composite solid propellant flame microstructure ...
Friedman, R.   +3 more
core   +1 more source

Structure of confined laminar spray diffusion flames: Numerical investigation [PDF]

open access: yes
The structure of confined laminar spray diffusion flames is investigated numerically by solving the gas-phase conservation equations for mass species, continuity, momentum, and energy and the liquid-phase equations for droplet position, velocity, size ...
Aggarwal, S. K.   +2 more
core   +1 more source

Arcjet starting reliability: A multistart test on hydrogen/nitrogen mixtures [PDF]

open access: yes
An arcjet starting reliability test was performed to investigate one feasibility issue in the use of arcjets onboard a satellite for north-south stationkeeping. A 1 kW arcjet was run on hydrogen/nitrogen gas mixtures simulating decomposed hydrazine.
Curran, Frank M., Haag, Thomas W.
core   +1 more source

A study of re-ignition phenomena and arc modelling to evaluate switching performance of low-voltage switching devices

open access: yes, 2018
This thesis deals with the prediction, improvement and simulation of switching performance of low-voltage switching devices (LVSDs). A literature review of arc characteristics, interruption principle, switching performance and arc modelling of LVSDs has been conducted.
openaire   +1 more source

Langley Mach 4 scramjet test facility [PDF]

open access: yes
An engine test facility was constructed at the NASA Langley Research Center in support of a supersonic combustion ramjet (scramjet) technology development program.
Anderson, G. Y.   +4 more
core   +1 more source

Evaluation of thin wall spacecraft electrical wiring. Volume I - Test methods and facilities Technical report no. 1 [PDF]

open access: yes
Test methods and facilities used in evaluating performance characteristics of thin wall spacecraft electric wiring under simulated spacecraft ...
Frisco, L. J., Mathes, K. N.
core   +1 more source

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