A Scientific Rationale for Mobility in Planetary by National Research Council Staff PDF

By National Research Council Staff

ISBN-10: 0309064376

ISBN-13: 9780309064378

ISBN-10: 0585068585

ISBN-13: 9780585068589

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Additional resources for A Scientific Rationale for Mobility in Planetary Environments (Compass Series)

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13 Longer ranges will be necessary if a rover is to characterize and sample geological units on a more regional scale or if it is to visit more than one specific site. To adequately perform the scientific characterization of a site, a rover requires the following capabilities:14 • • • • Context—the ability to determine the lander’s location in relation to features recognizable from orbit; Vision—the ability to return recognizable images of the local area to Earth; Mobility—the ability for significant movement away from the landing site; Manipulation—the ability to handle samples physically.

Radio tracking with interferometric techniques may be sufficient to achieve the requisite accuracy, at least while the balloons are on Jupiter’s Earth-facing hemisphere. In summary, a fleet of balloons could obtain the needed measurements, offering major advantages over multiple entry probes. In particular, balloons could reveal the full extent of horizontal and vertical variations in composition, structure, and wind velocity in the jovian atmosphere. 55,56 The scarcity of impact craters in many areas implies a relatively young age for the surface and suggests that there must have been active resurfacing in geologically recent epochs.

1). 25 m2 solar cell array. Navigation was controlled from Earth, but the rover was capable of avoiding obstacles by using laser sensors and a simple avoidance protocol included in its on-board processor (Intel 80C85). Navigation was accomplished with two forward-looking monochromatic cameras that provided a stereoscopic view of the terrain. Sojourner’s maximum speed was 1 cm/s for a total possible range of about 60 m/day, assuming continuous driving and no obstacles; actual speeds and distance traveled were much less.

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A Scientific Rationale for Mobility in Planetary Environments (Compass Series) by National Research Council Staff


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