henry@utzoo.uucp (Henry Spencer) (02/09/89)
In article <574@internal.Apple.COM> ems@Apple.COM (Mike Smith) writes: >And what about all the military supersonic fights? Surely what is >true of Eco-concerns for the Concord is also true for the SR71? There are only a handful of operational SR-71s and they don't fly all that much. Virtually all other military supersonic aircraft spend essentially all their time at relatively low altitudes and subsonic speeds. There is real reason for concern here, both for future SSTs and for spaceplane developments. -- Allegedly heard aboard Mir: "A | Henry Spencer at U of Toronto Zoology toast to comrade Van Allen!!" | uunet!attcan!utzoo!henry henry@zoo.toronto.edu