Orbital's Two-Stage OBV Interceptor Rocket Successfully Launched for Missile ...

MarketWatch (press release)

In mid-2011, Orbital is scheduled to carry out the inaugural flight of its Taurus(R) II space launch vehicle and approximately a year later, ...

Missile Interceptor Tested in California new Global Security Newswire

Modified Ground-Based Interceptor Completes Successful Flight Test defpro

First New Missile Test For U.S. is a Hedge Against Iran PR Newswire (press release)



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Prospects for US-Russia Missile Defense Cooperation

US Department of State

It has tested a two stage solid-propellant missile and placed a satellite into orbit using an indigenous launch vehicle . On March 27 of this year, ...



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Delta 4 rocket blasts off, carrying Global Positioning System satellite into space

Gaea Times (blog)

Future GPS spacecraft will be lifted into orbit on the Delta 4, on the Atlas 4 and on ULA's Evolved Expendable Launch Vehicle . ...

Name the russian launch vehicle that placed India's first satellite in space?
Q. Name the russian launch vehicle that placed India's first satellite in space?
Asked by Sidd - Sun Dec 10 07:11:29 2006 - - 5 Answers - 0 Comments

A. "Aryabhata was India's first satellite, named after the great Indian astronomer of the same name. It was launched by the Soviet Union on 19 April 1975 from Kapustin Yar using a Cosmos-3M launch vehicle. Aryabhata was built by the Indian Space Research Organization (ISRO) to conduct experiments related to astronomy. The satellite reentered the Earth's atmosphere on 11 February 1992." From Wikipedia, the free, online encyclopedia at: Hope this helps!
Answered by cfpops - Sun Dec 10 07:17:57 2006

Will this vehicle work for launching and loading a waverunner?
Q. I'm looking at a 2006 Chevy Equinox, V6. It is front wheel drive only, not all wheel drive. Will it be capable of launching my Yamaha 800 Waverunner? My main concern is, will I have problems (power, traction) getting it back out of the water and getting back up the ramp when I re load it?
Asked by cajuncowgirl318 - Wed Dec 12 12:17:10 2007 - - 2 Answers - 0 Comments

A. No you should be fine as long as you don't get it into the water too far. The waverunner is not all that heavy and if you get a lightweight trailer you will definitely have no problems at all. Good luck with your choices.
Answered by Jerry Z - Wed Dec 12 12:20:31 2007

Does it require more energy for a space vehicle to leave low-earth orbit, or the surface of the moon?
Q. I'm in a debate over which would be the cheaper, more efficient platform for launching a mission to Mars, a space station or a moon base. Regardless of all the other various advantages and disadvantages of these two options, which one would require the least amount of energy for a vehicle to leave? I don't know enough physics to figure out the energy required to leave a low-earth orbit vs. the surface of the moon.
Asked by Ty - Sat Aug 15 16:00:08 2009 - - 4 Answers - 0 Comments

A. You want to find the delta-vee required for a minimum energy escape trajectory. The gravitational constant. G = 6.67428e-11 m kg sec Moon. M = 7.3477e22 kg R = 1.7371e6 m Escape speed from surface = sqrt(2GM/R) = delta vee Escape speed from surface = 2376.2 m/s Earth. M = 5.9736e24 kg R = 6.3781e6 m H = 1.0e5 m Circular orbital speed at 100 km altitude = sqrt[GM/(R+H)] Circular orbital speed at 100 km altitude = 7845.1 m/s Escape speed at 100 km altitude = sqrt[2GM/(R+H)] Escape speed at 100 km altitude = 11094.6 m/s Delta-vee needed to escape from orbit = 3249.5 m/s It's easier to escape from the moon's surface than it is to escape from low Earth orbit. It requires more energy to escape from low Earth orbit than it does to escape… [cont.]
Answered by Dump the liberals into Jupiter - Sat Aug 15 17:23:26 2009