Results 31 to 40 of about 25,392 (120)

Acoustic characteristics of externally blown flap systems with mixer nozzles [PDF]

open access: yes
Noise tests were conducted on a large scale, cold flow model of an engine-under-the-wing externally blown flap lift augmentation system employing a mixer nozzle.
Dorsch, R. G.   +2 more
core   +1 more source

Development of a high power microwave thruster, with a magnetic nozzle, for space applications [PDF]

open access: yes
This paper describes the current development of a high-power microwave electrothermal thruster (MET) concept at the NASA Lewis Research Center. Such a thruster would be employed in space for applications such as orbit raining, orbit maneuvering, station ...
Chapman, Randall A., Power, John L.
core   +1 more source

Deterministic delivery of externally cold and precisely positioned single molecular ions

open access: yes, 2011
We present the preparation and deterministic delivery of a selectable number of externally cold molecular ions. A laser cooled ensemble of Mg^+ ions subsequently confined in several linear Paul traps inter-connected via a quadrupole guide serves as a ...
A. Friedenauer   +36 more
core   +1 more source

Phase-matched extreme-ultraviolet frequency-comb generation

open access: yes, 2017
Laser-driven high-order harmonic generation (HHG) provides tabletop sources of broadband extreme-ultraviolet (XUV) light with excellent spatial and temporal coherence. These sources are typically operated at low repetition rates, $f_{rep}\lesssim$100 kHz,
Benko, Craig   +6 more
core   +1 more source

An assessment of the use of antimisting fuel in turbofan engines [PDF]

open access: yes
The effects of antimisting kerosene on the performance of the components from the fuel system and the combustor of a JT8D aircraft engine were evaluated.
Desaro, R., Fiorentino, A., Franz, T.
core   +1 more source

Advanced propulsion concepts [PDF]

open access: yes
The topics presented are covered in viewgraph form. The programmatic objective is to establish the feasibility of propulsion technologies for vastly expanded space activity.
Sercel, Joel C.
core   +1 more source

A high flux source of cold strontium atoms

open access: yes, 2015
We describe an experimental apparatus capable of achieving a high loading rate of strontium atoms in a magneto-optical trap operating in a high vacuum environment. A key innovation of this setup is a two dimensional magneto-optical trap deflector located
Chia, Z. Y.   +8 more
core   +1 more source

Upgraded automotive gas turbine engine design and development program, volume 2 [PDF]

open access: yes
Results are presented for the design and development of an upgraded engine. The design incorporated technology advancements which resulted from development testing on the Baseline Engine. The final engine performance with all retro-fitted components from
Pampreen, R. C., Wagner, C. E.
core   +1 more source

Performance of rocket nozzle materials with several solid propellants [PDF]

open access: yes
Erosion resistance and thermal stress cracking tests of rocket nozzle materials with solid ...
Freche, J. C.   +2 more
core   +1 more source

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