from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the vertical airfoil in the tail assembly of an aircraft
Sorry, no etymologies found.
Their job that day was to take the number two D-558-2 research airplane up to an altitude of a little over 30,000 feet and then drop it so HSFS research pilot Jack McKay could take it through a flight investigation of its vertical tail loads.