We are 
Does it work with farts as well?
It's the formula for calculating the thrust of a rocket engine! As you can imagine, it's quite useful to us. 
#ArianeSummerHomeworkpic.twitter.com/AvlIwvuNr1
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What would be typical values of these parameters?
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For the Ariane 5s Vulcain engine Ve=4400 m/s, qm=261 kg/s, A1=2,3 m^2, P1~0.5 bar, Pa=1 bar(sea level) to 0 bar (space). There is quite a range from powerful srb to highly efficient ion drives.
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you should focus on reusability
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@DelphinIsoardi mise mal - End of conversation
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Of course, it is your job to make use of this equation and earn the money from it.
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You should make a t-shirt about it
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