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Virgin Galactic intends to use 747 jet for satellite launches

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Posted in Science on 4th Dec, 2015 05:00 PM by AlexMuller

Branson is reassigning one of his old jumbos to the service of space. The jet will be the launch platform for the satellite rocket being developed by another of the entrepreneur's companies, Virgin Galactic. The 747 will carry this booster to high altitude where it will be released to ignite its engine and go into orbit.

 

Jumbos have long played a role in space activity, most famously to transport Nasa's old shuttles across America. Virgin Galactic will be air-launching a tourist spaceplane from underneath a jet vehicle, and originally had planned for the satellite rocket to use the same platform.
 
But the performance requirements of the booster have driven engineers to seek an alternative carrier. Earlier this year, they announced they would be increasing the payload capability of the forthcoming rocket after consultations with prospective customers - a jump from 120kg of satellite payload to 200kg, into a standard orbit.
 
That meant stretching the tanks on the booster to accommodate more propellant, and, as a consequence, its mass and length had to increase. The old 747-400 jumbo can handle this. 
 
"The Boeing 747 has a very special place in my heart: we began service on my first airline, Virgin Atlantic, with just one leased 747," Sir Richard said in a statement.
 
Virgin Galactic is calling its satellite booster LauncherOne. It intends to debut the liquid oxygen/kerosene rocket in 2016 or 2017, selling missions for under $10m. The company believes that with this price it can grab a major share of the market for launching small satellites.
 
Already, it has done a deal with satellite telecommunications company OneWeb. This British Channel Islands-based outfit has ordered at least 39 LauncherOnes to orbit up to two spacecraft at a time. One of the advantages of an air-launch model for satellites is the freedom to base the carrier jet at many locations. It is not restricted to a fixed pad location.
 
"Air launch enables us to provide rapid, responsive service to our satellite customers on a schedule set by their business and operational needs, rather than the constraints of national launch ranges," said George Whitesides, Virgin Galactic CEO.
 
"Selecting the 747 airframe provides a dedicated platform that gives us the capacity to substantially increase our payload to orbit without increasing our prices."

Tags: spaceVirgin Galacticcommercial spacehardwarebusinesssatellite

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