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Rocket launches LIVE.
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<blockquote data-quote="grubstake" data-source="post: 604653" data-attributes="member: 4012"><p>Because of the the thin martian atmosphere, very long rotors are necessary, 1.2m (4ft) diameter in this case! A quad would necessitate four long rotors (each probably somewhat shorter than these, I guess) and four separate motors, with a body structure strong enough to support them, so I'd guess the more compact single-axis contra-rotating helicopter format was preferable because of size constraints if nothing else.</p></blockquote><p></p>
[QUOTE="grubstake, post: 604653, member: 4012"] Because of the the thin martian atmosphere, very long rotors are necessary, 1.2m (4ft) diameter in this case! A quad would necessitate four long rotors (each probably somewhat shorter than these, I guess) and four separate motors, with a body structure strong enough to support them, so I'd guess the more compact single-axis contra-rotating helicopter format was preferable because of size constraints if nothing else. [/QUOTE]
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Rocket launches LIVE.
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