Unfortunately this provides only 2% of the OP's desired acceleration! Nick ----- Original Message ----- From: "Steve Smith" To: Sent: Friday, January 09, 2004 12:20 PM Subject: Re: [PICLIST] [EE:] Sled propulsion > It has just come to me ! > > Change the angle of inclination ov the track such that it is > perpendicular to a level plane ! This should then assure you of maximum > acceleration with no added weight so the whole of the weight budget can > be devoted to minimizing friction with the guide rail and the air. > Better till do away with the air this would negate even more ov the > friction. Hence the only thing to worry about is the friction between > the sled and guide rail ! > > (pulse jet wont work in a vacuum) you may need solid fuel booster ! > > Steve..... > > -----Original Message----- > From: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Mike Singer > Sent: 09 January 2004 17:19 > To: PICLIST@MITVMA.MIT.EDU > Subject: Re: [EE:] Sled propulsion > > Jinx wrote: > > > A snowy hill usually works. > > > > Ah-ha, the obvious. Specify that proper operation is not > > guaranteed away from the Cresta Run or Aspen > > Does anybody remember IBM-360 hard disk drives with > the great linear drives? Cylinder magnet and a sled inside. > Few of them lined up will look awfully (though not as awfully > as new NASA's underground launcher project) > > Mike. > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads