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/sci/ - Science & Math

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>> No.12063884 [View]
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12063884

http://www.projectrho.com/public_html/rocket/engines.php#reeq
>As a general rule, a mass ratio greater than 4 is not economical for a merchant cargo spacecraft
Anyone know where this is derived?

pic semi related

>> No.11861091 [View]
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11861091

>"I hope you're enjoying your stay at Phobos Port. We'll let you go about your business on Mars, but while we were inspecting your Starship to make sure its structure meets regulation we noticed a strange mass concentration in the forward bulkhead. Care to explain this?"
What did Martian Customs find and how fucked are you?

>> No.11607032 [View]
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11607032

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