Results 301 to 310 of about 54,745 (356)

A new method for landing on Mars

Acta Astronautica, 2002
Abstract Up to now, the only means to land payloads on Mars have involved a heavy, complicated, expensive retro-rocket landing system. Another method to land payloads is to use a novel solar heated hot-air balloon, or Solar Montgolfiere, which looks promising to replace the retro-rocket landing system, while increasing usable landed payload.
Jacques Blamont, Jack A. Jones
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Error analysis for a Mars landing

Astrodynamics Conference, 1988
This paper presents the methodology and preliminary results of a Mars landing error study. Aeromaneuvering was used to reduce the effects of errors. The guidance and navigation techniques used were based on those used for the Space Shuttle. A simulation was built to determine the performance of these techniques in a realistic Mars landing scenario. The
W. MCENEANEY, K. MEASE
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Landing a Spacecraft on Mars

IEEE Software, 2013
How much software does it take to land a spacecraft safely on Mars, and how do you make all that code reliable? This column describes such a software development process. The first Web extra at http://mars.jpl.nasa.gov/multimedia/videos/movies/miam20121218/miam20121218-1280.mov is a 60-second video from NASA's Jet Propulsion Laboratory that shows how ...
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Europe to Land on Mars

Engineering & Technology, 2014
Only one country has so far managed to land objects on Mars successfully - the USA. Not wanting to get left behind, Europe is building its own rover - the ExoMars. Its three prototypes are currently roaming a mock section of Mars built at Airbus's facilities in Stevenage, UK.
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Selection of the Mars Science Laboratory Landing Site

Space Science Reviews, 2012
The selection of Gale crater as the Mars Science Laboratory landing site took over five years, involved broad participation of the science community via five open workshops, and narrowed an initial >50 sites (25 by 20 km) to four finalists (Eberswalde, Gale, Holden and Mawrth) based on science and safety.
Golombek, M., Grant, John A., Kipp, D., Vasavada, A., Kirk, R., Fergason, R., Bellutta, P., Calef, F., Larsen, K., Katayama, Y., Huertas, A., Beyer, R., Chen, A., Parker, T., Pollard, B., Lee, S., Sun, Y., Hoover, R., Sladek, H., Grotzinger, J., Welch, R., Dobrea, E. Noe, Michalski, J., Watkins, M.   +23 more
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Landing on the Moon, Venus, and Mars

2011
The Soviets reached the zenith of their success at the Moon with robotic missions in 1970 and 1971. In September 1970 the Luna 16 mission successfully returned a sample of the Moon to Earth; an impressive achievement still unmatched by the US. In November the Luna 17 mission successfully deployed the first robotic rover on the Moon, Lunokhod 1; another
Wesley T. Huntress, Mikhail Ya. Marov
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Analysis of a terminal landing on Mars

Journal of Spacecraft and Rockets, 1995
This study consists of a preliminary performance and sensitivity assessment of trajectory and guidance capabilities of a Mars terminal landing phase. The phase begins with the end of the entry phase, which is at parachute deployment. Therefore, the trajectory investigated in this study starts at parachute deployment and continues through parachute ...
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Performance Trades for Mars Pinpoint Landing

2006 IEEE Aerospace Conference, 2006
Previous Mars landers have been able to land only within tens to hundreds of km of a target site. Principal sources of uncertainty are approach navigation, atmospheric modeling, and vehicle aerodynamics; additional (lesser) uncertainty sources are map-tie error and wind drift.
A.A. Wolf, J. Tooley, S. Ploen, M. Ivanov, B. Acikmese, K. Gromov   +5 more
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Getting There: Landing an Onion on Mars

2013
To try to simplify the ideas in this book it is helpful to visualize this informational ecosystem in layers. To aid in this one might imagine a metaphor to describe the involved dynamic and continuous process. It is somewhat of a two-part metaphor to be specific.
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How to land a human on Mars

Engineering & Technology, 2013
With Curiosity last year becoming the fourth rover to land on Mars, how long will it be before a human walks on the Red Planet?
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