egg changed the topic of #kspacademia to: https://git.io/JqLs2 | Dogs are cats. Spiders are cat interferometers. | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf | Logs: https://esper.irclog.whitequark.org/kspacademia
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<galois>
title: Shared album - Patrick N - Google Photos
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<egg|anbo|egg>
smkz: remember the GG-exhaust-pressurizes-the-tanks thing of Ariane 4?
<egg|anbo|egg>
smkz: It turns out it dates back to Véronique, the LRBA folks came up with that because they couldn’t afford the weight of compressed air tanks
<egg|anbo|egg>
!acr -add:LRBA Laboratoire de Recherches Balistiques et Aérodynamiques
<galois>
Definition added!
<egg|anbo|egg>
smkz: source Olivier Huwart, Du V2 à Véronique : La naissance des fusées françaises, p. 137
<egg|anbo|egg>
smkz: it looks like dump an ammonium nitrate solution into the exhaust (not sure whether that still is the case in Ariane 4 or if that water is just pure water)
<egg|anbo|egg>
smkz: note that Véronique uses a pressure-fed, not turbopump engine, so the gas generator is there only to pressurize the tanks to 30 bars, not drive any pumps
<egg|anbo|egg>
smkz: after « every plane has a trim tank », another staple of French design, « every rocket has a water tank »
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<egg|anbo|egg>
raptop: « this is a good example of how a woman could easily take her spinning with her when accomplishing other tasks around the house, like feeding your enormous, nearly man-sized pet bird. »