vomit comet
n.— «Officially, NASA’s C-135 was designated the Reduced Gravity Aircraft; unofficially, hapless trainees dubbed it the “vomit comet,” “barf buzzard,” and “weightless wonder.”» —by Roger E. Bilstein in National Aeronautics and Space Administration Orders of Magnitude , 1989. (source: Double-Tongued Dictionary)
Further reading
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