Hi Nat, I've also only bought liquid helium by the liter, dispensed in 60 or 100 liter storage dewars. However, given that we're talking about Marshall and Lockheed, I think it is more likely than not that they really did design their spacecraft including the helium tank in customary units.
John On Friday 16 April 2004 19:03, Nat Hager III wrote: > > . the Dewar flask holds 645 gallons of superfluid liquid helium > > * 3.78 = 2450 Liters (approx) > > That's a media translation. Having done a dissertation involving liquid > helium, I can say the Dewar flasks and liquifiers are exclusively > metric. And that was 25 years ago! > > Nat
