Wednesday, April 6, 2011

SPACEX - Space Exploration Technologies Corporation



Space Exploration Technologies Corp. (SpaceX) is an American space transport company founded by PayPal co-founder Elon Musk. It has developed the Falcon 1 and Falcon 9 rockets, both of which are built with a goal of being reusable launch vehicles. SpaceX is also developing the Dragon spacecraft to be carried to orbit by Falcon 9 launch vehicles. SpaceX designs, tests and fabricates the majority of their components in-house, including the Merlin, Kestrel, and Draco rocket engines. In December 2010, SpaceX became the first private company to successfully launch, orbit and recover a spacecraft (a Dragon) 


In an era when most technology based products follow a path of ever-increasing capability and reliability while simultaneously reducing costs, launch vehicles today are little changed from those of 40 years ago. SpaceX aims to change this paradigm by developing a family of launch vehicles which will ultimately reduce the cost and increase the reliability of space access by a factor of ten. Coupled with the newly emerging market for private and commercial space transport, this new model will re-ignite humanity's efforts to explore and develop Space.
Our company is based on the philosophy that simplicity, low-cost, and reliability can go hand in hand. By eliminating the traditional layers of management, internally, and sub-contractors, externally, we reduce our costs while speeding decision making and delivery. Likewise, by keeping the vast majority of manufacturing in house, we reduce our costs, keep tighter control of quality, and ensure a tight feedback loop between the design and manufacturing teams. And by focusing on simple, proven designs with a primary focus on reliability, we reduce the costs associated with complex systems operating at the margin.


Established in 2002 by Elon Musk , the founder of PayPal and the Zip2 Corporation, SpaceX has already developed two brand new launch vehicles, established an impressive launch manifest, and been awarded COTS funding by NASA to demonstrate delivery and return of cargo to the International Space Station. Supported by this order book and Mr. Musk's substantial resources, SpaceX is on an extremely sound financial footing as we move towards volume commercial launches.
Although drawing upon a rich history of prior launch vehicle and engine programs, SpaceX is privately developing the Dragon crew and cargo capsule and the Falcon family of rockets from the ground up, including main and upper stage engines, the cryogenic tank structure, avionics, guidance & control software and ground support equipment.
With the Falcon 1, Falcon 9 and Falcon Heavy launch vehicles, SpaceX is able to offer a full spectrum of light, medium and heavy lift launch capabilities to our customers. We are able to deliver spacecraft into any inclination and altitude, from low Earth orbit to geosynchronous orbit to planetary missions. The Falcon 9 and Falcon Heavy are the only US launch vehicles with true engine out reliability. They are also designed such that all stages are reusable, making them the world's first fully reusable launch vehicles. And our Dragon crew and cargo capsule, currently under development, will revolutionize access to space by providing efficient and reliable transport of crew and cargo to the ISS and other LEO destinations.
Our design and manufacturing facilities are located near the Los Angeles International airport, leveraging the deep and rich aerospace talent pool available in Southern California . Our extensive propulsion and structural test facilities are located in Central Texas. We currently have launch complexes available in Vandenberg and Kwajalein Island , and in April 2007 we were granted use of and began developing Space Launch Complex 40 at Cape Canaveral.



Falcon Heavy’s first stage will be made up of three nine-engine cores, which are used as the first stage of the SpaceX Falcon 9 launch vehicle. It will be powered by SpaceX’s upgraded Merlin engines currently being tested at the SpaceX rocket development facility in McGregor, Texas. SpaceX has already designed the Falcon 9 first stage to support the additional loads of this configuration, and with common structures and engines for both Falcon 9 and Falcon Heavy, development and operation of the Falcon Heavy will be highly cost-effective.

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FALCON HEAVY
Mass to LEO (200 km, 28.5 deg):
53,000 kg (117,000 lb)
Overall Length:
69.2 m (227 ft)
Width (body):
3.6 m (12 ft) x 11.6 m (38 ft)
Width (fairing):
5.2 m (17 ft)
Mass on liftoff:
1,400,000 kg (3,100,000 lb)
Thrust on liftoff:
17 MN (3,800,000 lbf)

HIGH RELIABILITY AND HIGH PERFORMANCE

The Falcon Heavy is designed for extreme reliability and can tolerate the failure of several engines and still complete its mission. As on commercial airliners, protective shells surround each engine to contain a worst-case situation such as fire or a chamber rupture, and prevent it from affecting the other engines and stages. A disabled engine is automatically shut down, and the remaining engines operate slightly longer to compensate for the loss without detriment to the mission.
Falcon Heavy will be the first rocket in history to feature propellant cross-feed from the side boosters to the center core. Propellant cross-feeding leaves the center core still carrying the majority of its propellant after the side boosters separate. This gives Falcon Heavy performance comparable to that of a three-stage rocket, even though only the single Merlin engine on the upper stage requires ignition after lift-off, further improving both reliability and payload performance. Should cross-feed not be required for lower mass missions, it can be easily turned off.
Anticipating potential astronaut transport needs, Falcon Heavy is also designed to meet NASA human rating standards. Falcon Heavy is designed to higher structural safety margins of 40% above flight loads, rather than the 25% level of other rockets, and triple redundant avionics. Despite being designed to higher structural margins than other rockets, the Falcon Heavy side booster stages have a mass ratio (full vs. empty) above 30, better than any launcher in history. By comparison, the Delta IV side boosters have a mass ratio of about 10.

SAVING THE USA $1B ANNUALLY

If allowed to compete, SpaceX can help the Department of Defense save at least one billion dollars annually in space launch services, while providing a truly independent family of vehicles to help assure access to space.
The Falcon Heavy is classified as an Evolved Expendable Launch Vehicle (EELV). The EELV program was established by the United States Air Force to launch satellites into orbit more economically. The program was intended to both secure access to space for the Department of Defense and other United States government payloads and lower costs by at least 25%, and with a goal of 50%.
Unfortunately, primarily due to lack of competition, costs have actually escalated–increasing by over 30% for FY 2012 alone. The total cost of the current program now exceeds $2.7B, with over $1B paid to a single provider just to sustain the program. That is one billion dollars per year, whether they launch or not.
Falcon Heavy with more than twice the payload but less than one third the cost of a Delta IV Heavy, will provide much needed relief to government and commercial budgets. This year, even as the Department of Defense budget was cut, the EELV launch program, which includes the Delta IV, still saw a thirty percent increase.
The 2012 Air Force budget includes $1.74B for four launches, an average of $435M per launch. With Falcon Heavy priced at $80-125M per launch SpaceX has the potential to provide the US government significant value. In addition, the medium-lift Falcon 9 could support a number of medium-lift Air Force launches at only $50-60M per launch, if SpaceX were allowed to compete for this business.

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