SCIENTIFIC AND TECHNICAL AEROSPACE REPORTS
A Biweekly Publication of the National Aeronautics and Space Administration
VOLUME 44, ISSUE 3 - February 10, 2006
20 SPACECRAFT PROPULSION AND POWER
Includes main propulsion systems and components, e.g., rocket engines; and spacecraft auxiliary power sources.
For related information see also 07 Aircraft Propulsion and Power, 28 Propellants and Fuels, 15 Launch Vehicles and Launch Operations, and 44 Energy Production and Conversion.
20060004102 Department of Energy, Washington, DC, USA
Assisting Transit Agencies with Natural Gas Bus Technologies
January 2005; 6 pp.; In English Report No.(s): DE2005-15015196; No Copyright; Avail.: Department of Energy Information Bridge
A 2-page fact sheet summarizing the U.S. Department of Energy Natural Gas Transit Users Group, which provides assistance to transit agencies implementing natural gas vehicles into their fleets. NTIS
Natural Gas; Renewable Energy; Urban Transportation
20060004116 Department of Energy, Washington, DC, USA
New York City Transit Drives Hybrid Electric Buses into the Future
January 2005; 18 pp.; In English Report No.(s): DE2005-15015195; No Copyright; Avail.: Department of Energy Information Bridge
Four-page fact sheet summarizing the status of the evaluation done by the U.S. Department of Energy's Advanced Vehicle Testing Activity on New York City Transit's hybrid electric bus fleet. NTIS
Electric Motor Vehicles; New York City (NY)
20060004849 Air Force Research Lab., Edwards AFB, CA USA
Health Management Issues and Strategy for Air Force Missiles
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Ruderman, Gregory; Oct. 1, 2005; 36 pp.; In English Contract(s)/Grant(s): Proj-1011 Report No.(s): AD-A440674; AFRL-PR-ED-TP-2005-368; No Copyright; Avail.: CASI: A03, Hardcopy
As so-called 'wooden rounds,' which are intended to sit stably in storage for extended periods and then function precisely as desired, at a moment's notice, Air Force missiles would appear to be an ideal application for health monitoring. However, solid rocket motors that serve as the propulsion system for these missiles present a number of unique challenges for the development of integrated vehicle health monitoring systems. Mechanical and chemical complexity, long service lives, aging materials, and designs with small margins are typical for solid motors. But the payoff for health monitoring is extreme as well. Maintaining a healthy and capable fleet-ensuring the viability of the missiles in the fleet while not retiring or destroying good assets before it is necessary could save as much at 50% in costs over a 50-year life cycle. In this paper, a number of the unique aspects of solid rocket motors will be explored, the difficulties and successes in development of sensors and diagnostic systems will be discussed, and a path to further continue development of these systems will be proposed. DTIC
Health; Missiles; Solid Propellant Rocket Engines
Source: NASA
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