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CINEMA FANTASTIC
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by Marcel F. Williams Tuscany is renowned for its beautiful cities of Florence and Siena, and is historically famous as the birthplace ... -
by Marcel F. Williams On December 17th 1935, the Douglas Aircraft Company introduced an new airplane that revolutionized commercial air trav... -
by Marcel F. Williams During Space Shuttle manager John Shannon's presentation of the Side-mount Shuttle (SD-HLV) concept to the Augu... -
by Marcel F. Williams The Review of U.S. Human Space Flight Plans Committee (the Augustine Commission) recently concluded that NASA's C... -
The Constellation program was supposed to return America to the Moon-- to stay. But in the words of President Barak Obama on April 15 "... -
by Marcel F. Williams One frequent argument against the expansion of commercial nuclear power is the the claim that our planet is simply ... -
by Marcel F. Williams Currently, commercial nuclear energy in the US and in the rest of the world is solely utilized for the production of e... -
by Marcel F. Williams Congress has now made it clear that they want the immediate development of a heavy lift vehicle and a crew explorato... -
Credits: NASA by Marcel F. Williams The Augustine Commission testified before the Senate and the House of Representatives last week and wer...
3 comments:
You will get banned from Parabolic arc if you keep criticizing spaceX Marcel. Word will get around and you will eventually not be able to post anywhere except Dr. Spudis' blog and SpacePolicy online......like me.
That's why its fortunate that I run my own blog:-)
I'm a strong advocate for Commercial Crew development since I believe the private space programs are complimentary to public space programs.
But using the ISS to subsidize the development of Commercial Crew efforts is the most expensive and inefficient means to do so,IMO.
And trying to paralyze the public space program in order to show favoritism towards private space programs hurts both the public and private space programs.
Thanks for your comments!
Marcel
One of the most significant advantages of using ADEPT technology on Mars is that its terminal velocity is only 511 meters/second at about 10 kilometers above the martian surface. Therefore, only 511 m/s would be the delta-v requirement for a vehicle using propellant to softly land on the martian surface. Since the delta-v requirements space vehicles landing on the surface of the Moon from lunar orbit is usually above 2.0 km/s, lunar vehicles using an ADEPT deceleration shield could be used to land payloads on the martian surface.
Larger lunar vehicles capable of round trips to and from the surface of the Moon from one of the Earth-Moon Lagrange points-- on a single tank of fuel-- would also be capable of taking off from the surface of Mars into low Mars orbit.
Marcel
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