design referred to as a segmented ion engine is shown to rcduee the required ion source life time for .... also be used to vary the pressure fed to the erlgines.
Jan 16, 1998 - Scientific inquhy into the nsturc of the universe beyond Earth and ... whether they are alone, and the evolution of the universe, stars, plancts.
Wesley A. ~ r a u b " ~ , Marie Levine", Stuart Shaklanu, James Kasting',. J. Roger ~ n g e l ~ , Michael E. ...... Manager for the FBI study). James Alexander (JPL).
ics, Moog, Inc. and Spectrum Astro, Inc. The ion thruster uses propellant delivered by a Xenon Feed. System (XFS) and is powered by a Power Process- ing Unit ...
Jan 20, 2004 - Multi-Mission Radioisotope Thermoelectric Generator. (MMRTG) Program Overview12. Fred Ritz. The Boeing Company. 6633 Canoga Park.
Probabilistic Risk Assessment is a scenario based methodology. Scenarios are strings of events that begin with an initiator and lead to some sort of a conclusion ...
AN INTEGRATED APPROACH TO RISK ASSESSMENT ... engineers, each representing a different discipline, and a team leader. ... and interact with the team leader and other ... Computers used by various team members ... presented by the customer representat
Specialist John Grunsfeld and Commander Mike Baker are observing. ... Eric Vandeveld, Joseph 'Skip' Reymann and John Baker wrote the first version of the.
Earth. We review these lunar low-frequency array concepts and note .... All the studies concluded that radio communication links would suffice to handle.
Oct 10, 2004 - California Institute of Technology, Jet Propulsion Laboratory. 4800 Oak Grove ... challenge list for each sector using a team of NASA experts in each area with .... workshops have already been shared with the people working ...
California, National ~ e s e r v e . ~ ' ~ ~ The sample is characterized by three distinct regions, an unaltered rock. (white region), an area stained with iron oxide ...
2. ), which is used to perform rapid, high-level mass and cost options analyses of Mars orbiter missions. MC. 2 consists of a combination of databases, analytical ...
The MTP is a NASA-wide technology development program .... software based transceiver that can be reprogrammed at any time, pre- or ..... Indianapolis, Indiana.
We wish to know whether or not the modulations depend on the polarit of the ..... A hydrazine propulsion system is used to unload the reaction wheels and to ...
of a $40 million portfolio. Expanding the budget may make an entirely different set of technologies possible and preferable. By more reliably predicting the costs ...
In addition to breaking the chain of contact, other technologies such as micrometeorite protection and containerization integrity must be developed. Figure 8.
density of products undergoing software inspections. Software .... history of a detailed accounting of the second metrics during the early lifecycle phases. Due to ...
One key method is the NASA Technical Report Server (NTRS). The NTRS .... information are UNIX workstations, many of which are non-dedicated. Additionally ...
unguided ballistic trajectories during Entry, Descent, and Landing (EDL). ... The parachute phase starts at deployment of the first parachute and ends at ignition ...
Jeffrey H. Smith and Yeou-Fang Wang. Jet Propulsion Laboratory. California Institute of Technology. 4800 Oak Grove Dr. MS 301-165. Pasadena, CA 91109- ...
Figure 1: Potential landed payload masses delivered to the surface of Mars with various launch vehicles (for a C3 of 15 km. 2. /s. 2. ). Note: the result for Ares V is ...
(LEO) with a subsequent boost to geosynchronous Earth orbit. (GEO). A significant ... satellite, one launch vehicle, and five user terminals, had a very high cost.
ITT Space Systems Division ... ITT teamed to reprogram FPGA firmware and add tracking .... Jet Propulsion Laboratory, California Institute of Technology,.
a-Jet Propulsion Laboratory, California Institute of Technology; Pasadena, Ca. 91109; b-NASA ... 1. INTRODUCTION. The 2009 Mars Telecom Orbiter (MTO) is the first mission ...... asteroid flybys and early Galilean tour. In 1995 he became.
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