Moon landing anniversary
نویسندگان
چکیده
منابع مشابه
Moon Landing Trajectory Optimization
Trajectory optimization is a crucial process during the planning phase of a spacecraft landing mission. Once a trajectory is determined, guidance algorithms are created to guide the vehicle along the given trajectory. Because fuel mass is a major driver of the total vehicle mass, and thus mission cost, the objective of most guidance algorithms is to minimize the required fuel consumption. Most ...
متن کاملRevisiting Neil Armstrongs Moon-Landing Quote: Implications for Speech Perception, Function Word Reduction, and Acoustic Ambiguity
Neil Armstrong insisted that his quote upon landing on the moon was misheard, and that he had said one small step for a man, instead of one small step for man. What he said is unclear in part because function words like a can be reduced and spectrally indistinguishable from the preceding context. Therefore, their presence can be ambiguous, and they may disappear perceptually depending on the ra...
متن کاملOptimal Trajectory Planning for the Apollo Moon Landing: Descent, Ascent, and Aborts
This paper presents optimal trajectory solutions for guiding the Apollo Lunar Excursion Module (LEM) to and from the Moon’s surface. GPOPS− II was used to solve the nonlinear control problem, providing full state and control histories for optimal ascent, descent and abort scenarios. Although historically Apollo did not follow an optimal trajectory due to terrain and navigation constraints, the ...
متن کاملMoon Landing or Safari? A Study of Systematic Errors and Their Causes in Geographic Linked Data
While the adoption of Linked Data technologies has grown dramatically over the past few years, it has not come without its own set of growing challenges. The triplification of domain data into Linked Data has not only given rise to a leading role of places and positioning information for the dense interlinkage of data about actors, objects, and events, but also led to massive errors in the gene...
متن کاملBiological contamination studies of lunar landing sites: implications for future planetary protection and life detection on the Moon and Mars
Chemical and microbiological studies of the impact of terrestrial contamination of the lunar surface during the Apollo missions could provide valuable data to help refine future Mars surface exploration plans and planetary protection requirements for a human mission to Mars. NASA and ESA have outlined new visions for solar system exploration that will include a series of lunar robotic missions ...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2009
ISSN: 0096-3941
DOI: 10.1029/2009eo270005