Re: what is orbital speed around the moon?


"Scott Hedrick" <dinehnmNOSPAM@xxxxxxxxx> wrote in message
news:SIJAi.38$Ak.133251@xxxxxxxxxxxxxxxxx

"Jeff Findley" <jeff.findley@xxxxxxxxxxxxxx> wrote in message
news:d6539$46d2e594$927a2cda$13632@xxxxxxxxxxx
Actually, the shell would impact the moon somewhere in the vicinity of
the tank, depending on the irregularities in the lunar gravity field.
You'd need a rocket motor on the projectile to circularize the orbit so
it doesn't hit the moon. If I remember my orbital mechanics, you need a
burn on the side of the moon opposite the tank (i.e. at the highest point
of the original elliptical orbit).

When your rocket engine breaks, you need an orbital mechanic.

Boo! Hiss! :-P

Jeff
--
"They that can give up essential liberty to obtain a
little temporary safety deserve neither liberty nor
safety"
- B. Franklin, Bartlett's Familiar Quotations (1919)


.

Relevant Pages

  • Re: what is orbital speed around the moon?
    ... the shell would impact the moon somewhere in the vicinity of the ... tank, depending on the irregularities in the lunar gravity field. ... need a rocket motor on the projectile to circularize the orbit so it doesn't ... little temporary safety deserve neither liberty nor ...
    (sci.space.history)
  • Re: Celebrity Lead
    ... Then the comapany would only have had the company ... I heard a discussion on a Radio 4 morning show last week on breast ... something like he was against "earth mothers who insist on flaunting their ... breasts while feeding their children", ...
    (uk.rec.naturist)
  • Re: Esa und bemannter Zugang zum All
    ... denn ein Tank ist erst einmal nur ein Tank. ... Triebwerke mit denen man das verhindern kann, die z.B. mit Solarstrom und dem Erdmagnetfeld ... eine Kraft erzeugen die den Orbit erhoeht. ... fuer einen Flug zum Mars mit konventionellen Raketen ...
    (de.sci.raumfahrt)
  • Heavy RLV
    ... Imagine an airframe in a shape similar to that of an External Tank ... one can loft a payload ... MEO - medium earth orbit ...
    (sci.space.policy)
  • Re: Sub-G thrust to orbit.
    ... >> rocket motor together with a hypersonic lifting body? ... > Artillery shells are entirely capable of being launched into orbit re ... light gas guns but this is hardly considered easy. ...
    (sci.physics)
Quantcast