Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!apple!bionet!agate!ucbvax!hplabs!hpda!hpcuhb!hpsel1!campbelr From: campbelr@hpsel1.HP.COM (Bob Campbell) Newsgroups: sci.space.shuttle Subject: Re: Re: 100% plus? was Re: Shuttle Rolling and Throttle Back Message-ID: <9210003@hpsel1.HP.COM> Date: 4 Oct 88 18:55:26 GMT References: Organization: Hewlett Packard, Cupertino Lines: 15 > What is the difference between a motor and an engine? Seems > like the terms are used interchangeably. Are they? > > m wooding ---------- A simple definition is that there are solid-fueled rocket motors and liquid-fueled rocket engines. I am not sure what a hybrid rocket with solid fuel and liquid oxidizer is, but I would call it a motor. These are the definitions I was taught and are not verified be Webster's. Bob Campbell Some times I wish that I could stop you from campbelr@hpda.hp.com talking, when I hear the silly things you say. Hewlett Packard - Elvis Costello