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On a challenge thread on getting to Minmus and the Mun and back in one trip, a discussion came up on the mass of kerbals and their EVA suits. Based on the before / after mass of a basic craft and adding a kerbal to a command seat, a kerbal has 0.09 t mass. MechJeb apparently reports it as 94 kg. Now take the kerbal and remove the EVA fuel, and you still get 0.09 t, but somehow that suit has 600 m/s dV according to the Wiki. @Teilnehmer did some math and figured the EVA fuel was 10 kg based on the max acceleration of 3.2 m/s2 but that would mean the exhaust velocity was 5.4 km/s! If the stuff was actually the same as monopropellant, that would make EVA fuel 20 kg but that still puts the exhaust velocity at 2.5 km/s and I'm pretty sure I wouldn't want that on my back. Especially since real monopropellants are pretty volatile stuff. Modern EVA suits use compressed Nitrogen and apparently that suit only has 25 m/s dV. Now EVA fuel in KSP comes from hammerspace currently and a kerbal in a command seat is still 0.09 t with a full or empty EVA pack. But is this sort of EVA suit a real possibility? (I found an old thread on this regarding the mass of kerbals, but the advice against necro-posting applies.)
