Results 271 to 280 of about 720,757 (352)
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Following the water, the new program for Mars exploration
Acta Astronautica, 2002In the wake of the loss of Mars Climate Orbiter and Mars Polar Lander in late 1999, NASA embarked on a major review of the failures and subsequently restructured all aspects of what was then called the Mars Surveyor Program--now renamed the Mars Exploration Program.
Firouz M. Naderi +2 more
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Mars Exploration Rover Parachute Decelerator System Program Overview [PDF]
17th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, 2003 In the Mars Exploration Rover (MER) Mission, NASA returns to the red planet, following the extremely successful Mars Pathfinder in 1997. The mission will send two lander-rovers to the surface of Mars with separate launches in May and June, 2003. This paper describes the Parachute Decelerator System for the entry vehicle.
Robin Bruno, Allen Witkowski
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Athena - A possible first step in a program of human Mars exploration
32nd Joint Propulsion Conference and Exhibit, 1996 This paper discusses the "Athena" mission, a concept for an initial piloted mission to Mars that could be launched at low cost in the very near future. Athena is a double flyby, which uses two Mars gravity assist maneuvers to allow a round trip Mars mission to be performed with a single minimum energy trans-Mars injection burn.
Robert Zubrin
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China's first-phase Mars Exploration Program: Yinghuo-1 orbiter
Planetary and Space Science, 2013Abstract China's first Mars orbiter Yinghuo-1 associated with Russia's unmanned sample return spacecraft Phobos-Grunt will be jointly launched in October 2011. Yinghuo-1 orbiter will principally aim to detect Martian space magnetosphere, ionosphere, plasma distribution, ions escape mechanism, surface topography and sandstorms, and gravity field near ...
Min Zhong +4 more
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Mars Exploration Rover Thermal Test Program Overview
SAE Technical Paper Series, 2004 In January 2004, two Mars Exploration Rovers (MER) landed on the surface of Mars to begin their mission as robotic geologists. A year prior to these historic landings, both rovers and the spacecraft that delivered them to Mars, were completing a series of environmental tests in facilities at the Jet Propulsion Laboratory. This paper describes the test
Glenn T. Tsuyuki +4 more
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High and low thrust mission analysis for a Mars exploration program
Astrodynamics Conference, 1990The purpose of the study is to identify limits, trends, and sensitivities of Mars Transportation System performance over several Mars mission opportunities. Two Mars Transfer Vehicle (MTV) configurations utilizing different propulsion systems (Chemical/Aerobrake and NEP - Nuclear Electric Propulsion) are outlined.
Jerry L. Horsewood +2 more
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Mechanisms for Lowering Tethered Payloads: Lessons Learned from the Mars Exploration Program
2008 IEEE Aerospace Conference, 2008Compact, lightweight, highly reliable lowering devices capable of paying out tether to lower a payload some number of meters with exacting performance, from a balloon or a parachute or part of a spacecraft, typically appear in systems so unique that there is little historical precedent to build upon when preparing designs.
M.J. Gradziel, K.J. Holgerson
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Scientific Objectives of China-Russia Joint Mars Exploration Program YH-1
Chinese Astronomy and Astrophysics, 2010Abstract Compared with other planets, Mars is a planet most similar with the earth and most possible to find the extraterrestrial life on it, and therefore especially concerned about by human beings. In recent years, some countries have launched Mars probes and announced their manned Mars exploration programs.
Chengli Huang +7 more
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Acta Astronautica, 2000 Abstract The question of developing a space solar power system (SSPS) remains on the agenda as long as the energy supply of our planet is not secured for at least the next century. At the present time the oil and gas prices are low enough not to alarm the responsible governmental agencies and commercial enterprises. This may change in a few decades
H. H. Koelle
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Journal of Geoscience Education, 2007
The arrival of multiple US and European planetary exploration missions at Mars (Squires et al., 2004a, 2004b; Clery, 2004) provided an opportunity to introduce students to geologic observation in general, and to planetary geology in particular, with all the excitement involved in “real-time” remote data acquisition from another planet.
Louise H. Kellogg, Robert A. Zierenberg
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The arrival of multiple US and European planetary exploration missions at Mars (Squires et al., 2004a, 2004b; Clery, 2004) provided an opportunity to introduce students to geologic observation in general, and to planetary geology in particular, with all the excitement involved in “real-time” remote data acquisition from another planet.
Louise H. Kellogg, Robert A. Zierenberg
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