Elon Musk

@elonmusk ↗

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Last Checked May 30, 2020

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Mon Oct 14 21:56:36 +0000 2019

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Elon Musk @elonmusk

@Erdayastronaut @torybruno @MartianDays @AerojetRdyne Oberth effect is not well appreciated. Value of high thrust low in gravity well is not captured in simple delta-v equation. One of the reasons we favor CH4 over H2. https://t.co/LijrUMuJDq — PolitiTweet.org

Posted Oct. 14, 2019 Hibernated

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Elon Musk @elonmusk

@torybruno @Erdayastronaut @MartianDays @AerojetRdyne This is true. All that matters is number used in ∆v equation. Propellant residuals are incredibly important, often overwhelming engine mass. https://t.co/s2LcEapGAU — PolitiTweet.org

Posted Oct. 14, 2019 Hibernated

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Elon Musk @elonmusk

@Erdayastronaut @torybruno @MartianDays @AerojetRdyne Max thrust version of Raptor should achieve true T/W > 170. Target is 1.5 ton engine with >260 t-F. Max Isp version should achieve ~380 sec, but T/W probably <120 due to big nozzle. These are just guesses for now. — PolitiTweet.org

Posted Oct. 14, 2019 Hibernated