tag:blogger.com,1999:blog-2236472828366913719.post6256457115895129250..comments2024-03-24T22:58:08.254-07:00Comments on Team Phoenicia: The Wind at Dawn Flight SimulationsTeam Phoeniciahttp://www.blogger.com/profile/07567115203900100081noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-2236472828366913719.post-34313175783144781182008-08-08T12:22:00.000-07:002008-08-08T12:22:00.000-07:00I understood the delta-V requirement for 180s @ 1G...I understood the delta-V requirement for 180s @ 1G and lunar orbit to lunar surface (sortof - depends on the lunar orbit you choose).<BR/><BR/>It's just a 1G rocket will be logs heavier than a 1/6G rocket; in fact there are technologies and fuel suitable for 1/3G with higher SI but that you could not use in a 1G rocket.<BR/><BR/>Oh, well, it will still be an interesting demonstration.WizWomhttps://www.blogger.com/profile/09780003008394222841noreply@blogger.comtag:blogger.com,1999:blog-2236472828366913719.post-86467138666480692222008-08-07T21:06:00.000-07:002008-08-07T21:06:00.000-07:00Hello wizwom.You have a few misconceptions there. ...Hello wizwom.<BR/><BR/>You have a few misconceptions there. Allow us to rectify that!<BR/><BR/>First off, the Northrop Grumman Lunar Lander Challenge is <I>not</I> run for and by NorGrum. It's actually run by the X Prize Foundation for NASA. As for why NorGrum is involved at all in the name, may I suggest the X Prize Foundation's FAQ?<BR/><BR/>There's also a reason why they selected 180 seconds in a 1 G field for the second level challenge. It's not so they can develop a rocket to hover on the Moon - however most designs probably easily could! - but rather because 180 seconds of hovering in a 1 G field neatly matches up with the Delta-V needed to transit from the lunar surface to orbit.<BR/><BR/>Hope this helps!Team Phoeniciahttps://www.blogger.com/profile/07567115203900100081noreply@blogger.comtag:blogger.com,1999:blog-2236472828366913719.post-5231200050636031402008-08-07T13:47:00.000-07:002008-08-07T13:47:00.000-07:00Northrop Grummann does understand that a vehicle t...Northrop Grummann does understand that a vehicle that can hover in earth's 1G field is way overpowered in rocket capacity for landing and taking off from the 1/6th G on the moon?WizWomhttps://www.blogger.com/profile/09780003008394222841noreply@blogger.com