Principal Scientific Results of the Surveyor 3 Mission
نویسنده
چکیده
The fine lunar surface material at the Surveyor 3 landing site has about 3 X 108-dyne/cm 2 cohesion, 35 ø angle of internal friction, 3 X 105-dyne/cm ' static bearing capacity. A small rock withstood a local pressure of 2 X 107 dynes/cm -ø. Soil strength and density increase significantly at depths of a few centimeters. Exposed surface has a considerably higher albedo than the material just below it. The photometric function changed when the surface was slightly compressed. Fine surface material appears to be gradually moving downslope.
منابع مشابه
Mars global surveyor mission: overview and status.
The Mars Global Surveyor (MGS) spacecraft achieved a 45-hour elliptical orbit at Mars on 11 September 1997 after an 11-month cruise from Earth. The mission is acquiring high-quality global observations of the martian surface and atmosphere and of its magnetic and gravitational fields. These observations will continue for one martian year.
متن کاملRare ed Aerothermodynamic Predictions for Mars Global Surveyor
Mars Global Surveyor (MGS) successfully completed its rst phase of aerobraking in early 1998 and is the rst planetary mission to use aerobraking as a primary means of customizing its orbit to achieve its mission objectives [1]. The aerobraking requirements together with post-launch anomalies [2] presented a unique challenge to provide accurate predictions of the aerothermodynamic environment of...
متن کاملExtending C Global Surveyor
This paper describes an extension of C Global Surveyor (CGS), a static program analysis tool developed at the NASA Ames Research Center. CGS is used to analyse mission-critical flight software of NASA Mars missions. In order to enhance CGS and support the analysis of very large systems, the abstract interpretation techniques on which CGS is based need to be augmented by complimentary program an...
متن کاملData assimilation for Mars: an overview of results from the Mars Global Surveyor period, proposals for future plans and requirements for open access to assimilation output
The Thermal Emission Spectrometer (TES) aboard Mars Global Surveyor (MGS) has produced an extensive atmospheric data set, both during the initial aerobraking hiatus and later from the scientific mapping phase of the mission which lasted almost three complete Martian seasonal cycles. Thermal profiles for the atmosphere below about 40 km, and total dust and water ice opacities, have been retrieve...
متن کاملMagnetic Field and Plasma Observations at Mars: Initial Results of the Mars Global Surveyor Mission
The magnetometer and electron reflectometer investigation (MAG/ER) on the Mars Global Surveyor spacecraft has obtained magnetic field and plasma observations throughout the near-Mars environment, from beyond the influence of Mars to just above the surface (at an altitude of approximately 100 kilometers). The solar wind interaction with Mars is in many ways similar to that at Venus and at an act...
متن کامل