SpaceX in the news

There has been a lot of news about SpaceX in the blogosphere this week. SpaceX is a private rocket company founded by Elon Musk, the co-founder of PayPal. Apparently, they have broken the goal of sub $1000/lb to orbit launch costs. The significance of this is the lowering of costs for telecommunications satellites. SpaceX currently has two existing rockets: Falcon 1 and Falcon 9, and another one, Falcon Heavy, that should be operational soon.

According to the National Space Society Blog: “The Falcon Heavy is similar in conformation to the Delta 4 Heavy, which is the only rocket currently in service that is fair to compare to the Falcon Heavy. The “Heavy” will consist of three Falcon 9 stages strapped together (two side stages and a core stage which has a small upper stage and payload with fairing). The Falcon stages are stretched and the nine Merlin engines on each will be upgraded to have more thrust than the current engines. With a total liftoff mass of 1400 metric tons, it will put 53 metric tons into a standard 200 km Earth orbit at 28 degrees. (The 200 km orbit is a standard orbit to start from, for example, for injection into a geosynchronous transfer orbit — payloads are not left in this 200 km orbit.) Each of the “Heavy’s” three stages are about 12 feet in diameter, so based on data from the Ares I, the payload fairing could be up to 18 feet in diameter. The currently proposed shroud diameter is 17 feet. The total thrust at liftoff will be 3.8 million pounds or about 1700 tons, or 50% of the Saturn V’s thrust. This will make it the world’s largest and most powerful operational rocket once it has flown.”

SpaceX has been able to achieve considerable cost reductions due to “(1) low manufacturing cost (2) low operational cost (time efficient operations design and low man-hours needed per launch) and (3) high efficiency performance in flight. The first two have already been demonstrated by the Falcon 9, and they continue to be improved, such as a recently announced two-thirds reduction of fuel loading time. The SpaceX paradigm is one of continuous improvement.”

Here are some links for more information about SpaceX:


National Space Society Blog

Transterrestrial Musings Blog

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