-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jeff Wilson wrote: >> From: Anthony Jackson <[EMAIL PROTECTED]> >> Onno Meyer wrote: >>>> Enter the atmosphere slowly.... >>> There is always the unspoken assumption that you're in planetary orbit. >>> That does not have to be true. Say the shuttle is moving on a >>> slightly eccentric orbit around the sun, timed to coincide with earth >>> orbit at just >>> about zero relative velocity. Earth gravity will of course affect the >>> shuttle >>> (and vice versa, but that's astronomically small). >> >> This will result in a velocity at re-entry of just above escape >> velocity (11.2 kps or more) rather than orbital velocity, which will >> not help the stealth situation. > > There is a certain subset of scenarios that can yield below escape > velocity (by slingshotting around the moon for instance), but will still > be greater than LEO velocity when entering the atmosphere. >
You are absolutely certain that a hyperbolic solar orbit with aphelion preceding Earth so that Earth captures it at its slowest point would always exceed LEO? - -- Zan Lynx [EMAIL PROTECTED] "Knowledge is Power. Power Corrupts. Study Hard. Be Evil." -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkkjbiYACgkQolqWs/Y4NLyhDACglqdKJ/BT8fdkFyOseJEFdv1r AfUAmQEnfuozMHFvwKpz0BWGXawxmXcr =JPAZ -----END PGP SIGNATURE----- _______________________________________________ GurpsNet-L mailing list <[email protected]> http://mail.sjgames.com/mailman/listinfo/gurpsnet-l
