Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: Notesfiles $Revision: 1.7.0.5 $; site uiucdcsb Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!inuxc!pur-ee!uiucdcsb!seefromline From: dollas@uiucdcsb.Uiuc.ARPA Newsgroups: net.space Subject: Re: Angular Momentum Cancelation Message-ID: <15700023@uiucdcsb> Date: Tue, 16-Jul-85 09:48:00 EDT Article-I.D.: uiucdcsb.15700023 Posted: Tue Jul 16 09:48:00 1985 Date-Received: Thu, 18-Jul-85 05:31:10 EDT References: <3115@decwrl.UUCP> Lines: 9 Nf-ID: #R:decwrl.UUCP:-311500:uiucdcsb:15700023:000:314 Nf-From: uiucdcsb.Uiuc.ARPA!dollas Jul 16 08:48:00 1985 There is a Soviet helicopter. Its NATO designation is HORMONE (don't ask me why) which has two counter-rotating sets of blades and no tail rotor. I do not know of any american helicopters that use this principle. Apostolos Dollas USENET: ...!{pur-ee,ihnp4}!uiucdcs!dollas ARPA: dollas@uiuc.arpa