Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Hanscom Afb"'
Publikováno v:
46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Porous tungsten emitters of different aspect ratios, produced by a novel electrochemical etching process, are studied by angle-resolved mass spectrometry and retarding potential energy analysis, which provides information on the mechanisms of ion fie
Autor:
Shiang Liu, Maj Joseph Gueck, Boris Tomasic, Wright Patterson Afb, Schriever Afb, John Turtle, Capt Mark, Paul J. Oleski, John Schwartz, Roger Turner, Scitor Corp, Gary Scalzi, Hanscom Afb
Publikováno v:
AIAA SPACE 2009 Conference & Exposition.
This paper describes a top-down, requirements pull, integrated system acquisition and technology development approach to alleviate the issue of technology transition for space acquisition. Recent DoD policies and guidance to improve technology transi
Autor:
Frank H. Ruggiero, Cameron Q. Merrill, Hassan Hassan, D. Scott McRae, George Jumper, Hanscom Afb, Xudong Xiao, Arthur Jackson
Publikováno v:
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition.
New grid adaptation approaches have been developed for the dynamic solution adaptation grid algorithm (DSAGA) to improve grid renement for optical turbulence prediction. The grid adaptation algorithm and a four-equation hybrid LES/RANS turbulence mod
Autor:
Martin Tolliver, Gregory G. Spanjers, Dan Cohen, Gregory Ginet, Aaron Adler, Jason Guarnieri, Hanscom Afb, Kirtland Afb, James Winter, Bronislaw Dichter
Publikováno v:
44th AIAA Aerospace Sciences Meeting and Exhibit.
The Air Force Research Laboratory (AFRL) Space Vehicles Directorate has developed the Demonstration and Science Experiments (DSX) mission to research technologies needed to significantly advance Department of Defense (DoD) capability to operate space
Publikováno v:
42nd AIAA Aerospace Sciences Meeting and Exhibit.
Nascap-2K is being developed under sponsorship of the US Air Force Research Laboratory and NASA’s Space Environment Effects (SEE) program. It replaces the twenty-five year old NASCAP/GEO code, along with other aging spacecraft plasma interactions c
Publikováno v:
33rd Plasmadynamics and Lasers Conference.
It is well known that the gas in an ascending helium or hydrogen filled balloon cools faster than the surrounding atmosphere for night ascents. The cooler balloon then removes heat from the surrounding air, resulting in regions of cooler air in the t
Publikováno v:
34th Aerospace Sciences Meeting and Exhibit.
The Rocket Electric Field Sounding (REFS) payload, powered by a 2.75-in. Folding Fin Aircraft Rocket motor, flew three flights into thunderstorms at the Langmuir Laboratory, NM. The flight apogees were lower than expected, and plateaus were experienc
Publikováno v:
34th Aerospace Sciences Meeting and Exhibit.
On August 3,1994 the Photovoltaic Array Space Power Plus Diagnostics (PASP Plus) experiment developed by the Air Force's Phillips Laboratory was launched by a standard Pegasus rocket released from a B-52 aircraft into a 70° inclination, 363 km x 255
Autor:
P. D. Dao, Hanscom Afb
Publikováno v:
32nd Aerospace Sciences Meeting and Exhibit.
To properly assess the space environment and model the risk posed by collisions be- tween space assets and man-made space debris, new sources of data have been planned and recently obtained. Criti- cal measurements of the population to cm sizes are b