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[i]If the lunar module were to land down range of the nominal ellipse, it was likely that, even if the landing were successful, the crewmen would not be able to traverse to the prime objective (the central peaks), particularly if there were a failure of the lunar roving vehicle (LRV). These problems were deemed sufficient that the NASA Lyndon B. Johnson Space Center (JSC) considered Gassendi unacceptable as an Apollo 17 site. ...as in the case of Alphonsus, it was determined that the prime objective at Taurus-Littrow was achievable on a walking mission (LRV failure), even if the landing were made outside the nominal ellipse.[/i]
[i]The maximum distance the LRV will be permitted to range from the lunar module will be approximately 9.4 kiiometers (5.9 miles), the distance the crew could safely walk back to the LM in the unlikely event of a total LRV failure. This walkback distance limitation is based upon the quantity of oxygen and coolant available in the astronauts' portable life support systems. This area contains about 292 square kilometers (113 square miles) available for investigation, 10 times the area that can be explored on foot.[/i]
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