China Space Official Confounded By SpaceX Price 276
hackingbear writes "Declining to speak for attribution, the Chinese officials from Great Wall Industry, a marketing arm of China Aerospace Science and Technology Corp. (CAST), say they find the published prices on the SpaceX website very low for the services offered, and concede they could not match them with the Long March series of launch vehicles even if it were possible for them to launch satellites with U.S. components in them. According to the SpaceX website, launch on a Falcon 9 — which has an advertised lift capacity of 10,450 kg. (23,000 lb.) — from Cape Canaveral costs $54 million — $59.5 million. If the SpaceX price is real and its quality is proven, both are big IFs, it is remarkable to see that US can beat China in term of price. Between August 1996 and August 2009, the Chinese rockets have achieved 75 consecutive successful launches were conducted, ending with a partial failure in the launch of Palapa-D on August 31, 2009. If we all learn from SpaceX, maybe soon China will outsource from the US."
Re:Comparitive Advantage (Score:5, Informative)
Space rockets aren't produced in big enough batches to mass produce and generally require a lot of skilled labor. Exactly the sort of product where the US tends to have an advantage.
Yet the reason why SpaceX believe they can get the costs down to a tenth of the competition is precisely because they plan to mass-produce their rocket components (e.g. three first stages with the same basic design and nine of the same engines on each stage).
Re:Orbital Inclination + no equator access = money (Score:4, Informative)
You've never looked at a map of China have you? Hint: it's not further north than the US.
The in progress Wenchang Satellite Launch Center is in fact further south than Cape Canaveral by a decent amount. Xichang Satellite Launch Center is at roughly the same latitude as Cape Canaveral . That said, historically China has built it's launch facilities deep inside the country which puts them further north but also away from prying eyes. Which is likely a politically motivated limitation rather than any geographic or technical limitation.
Re:Orbital Inclination + no equator access = money (Score:5, Informative)
Cape Canaveral is at roughly 28.5 degrees. The Chinese have satellite launch facilities at Jiuquan (39 deg), Taiyuan (38 deg), Xichang (28 deg), and Wenchang on their southern island at only 19.5 degrees. The equator is 40Mm around, so initial speed at the equator would be around 0.46km/s. At 19.5, you have 0.43km/s; 28 is 0.41km/s; 38 is .36km/s.
Now what does all this mean? Low Earth orbit is around 8km/s, plus another 2.5km/s in altitude. That means there's all of a whopping 1% difference in delta-V between an equatorial launch, and one from China's northern launch facilities. Now true, fuel budgets run on exponential functions, and a 1% increase in velocity results in a more than 1% increase in fuel and cost, but it's not going to be the determining factor whether a launch system succeeded or fails.
Orbital plane changes are a completely different matter. The shuttle only has storage room to carry with it enough fuel for a couple degrees difference in plane, but that's because you're traveling 8km/s. It's not like you're in a car or a plane, and can push off something while maintaining your momentum. It all has to be done with thrust, and you have to reduce velocity in one direction, and increase it in another. When you're going a mere 0.4km/s starting from the ground, you only have to add velocity to get where you want to go. That means it is actually more efficient to land and take off again if you want to transition between equatorial and polar orbits.