NASA Asks Boeing, SpaceX To Stop Work On Next-Gen Space Taxi
BarbaraHudson writes Due to a challenge by Sierra Nevada, NASA has asked the winners for the next earth-to-orbit launch vehicles to halt work, at least temporarily. "After rewarding Boeing and SpaceX with the contracts to build the spacecrafts NASA is now asking the companies to stop their work on the project. The move comes after aerospace company Sierra Nevada filed a protest of the decision after losing out on the bid. Sierra Nevada was competing against Boeing and SpaceX for a share of the $6.8 billion CCP contracts. The contracts will cover all phases of development as well as testing and operational flights. Each contract will cover a minimum of two flights and a maximum of four, with each agency required to have one test flight with a NASA representative on board.... According to NASA's Public Affairs Office, this legal protest stops all work currently being done under these contracts. However, officials have not commented on whether-or-not the companies can continue working if they are using private funds."
I really doubt SpaceX is going to stop work on a vehicle they were developing before they were awarded the contract.
Boeing, on the other hand...
Filing a protest after someone else gets the contract is pretty much automatic.
Sorry, but nobody wants your miniature space shuttle, Sierra Nevada. Probably should have thought a little harder before copying one of the most expensive and unreliable space systems used in recent times. Heat-shield > Everything. Now SpaceX/Boeing have to bite the bullet and stop work? Something very wrong with this way of doing things.
I'm so tired of the near automatic protests of gov't contracts. If the challenge is rejected, the loser should pay for the delays/cost overruns instead of taxpayers.
It pales to the damage caused by the paring of NASA's budget over the years...
Happiness in intelligent people is the rarest thing I know.
Ernest Hemingway
...that in 100 years, historians will postulate that the US space program really vanished into the bureaucratic morass, and that politics and special interests combined to torpedo any hope that the private sector would ever make it into space.
-Styopa
Attention ploy by Sierra Nevada.
They've never flown a spacecraft, so they will not be awarded any contract monies under any circumstances, given that one of the contract criteria was that they meet the prequalification deadlines, which they have not.
I expect they're hoping getting their names out there would get them additional investors.
While those half communist Government suckling pigs were frittering away your precious tax dollars, we are on our way to the promised land with private industries superior and more efficient offerings.
So now, we'll bring entire programs to their knees with good old fashioned American core values.
The invisible hand of the free market is jacking us off.
With 40 grit sandpaper.
The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
The USAF X-20 DynaSoar was a one-man winged space glider with metallic TPS; it had WINGS (like the shuttle)
The DreamChaser is an HL-20 derivative lifting body (no wings) which was loosely-derived from the unmanned Soviet BOR lifting body which the Soviets had loosely-derived from thier study of three families of earlier American lifting bodies: the HL-10, the M2 series, the X-24(A and B) and the USAF "PRIME"
There are so many differences between the Shuttle and the DreamChaser that anybody attacking the DC based on their ignorant pet theories about the shuttle program is simply an idiot; just a tiny subset of differences:
1. Shuttle was winged space plane, DC is lifing body
2. Shuttle rode on side of stack and was part of launch vehicle, DC rides on top of stack and is launch vehicle agnostic.
3. Shuttle had complex hydraulic controls, thus requiring hydrazine-fueled APUs during launch and entry phases, DC has none of this
4. Shuttle was the size of a small airliner, with huge cargo bay for heavy payloads, making it too heavy to have an abort system, DC has an abort system
5. Shuttle was so big and landed so fast that in required very large runways to safely land, DC can land at most airports
6. Shuttle was very fragile having been built at the cutting edge of 1970s tech, DC is rugged carbon composite and suffered little damage when it rolled on landing when the test vehicle's landing gear (old and borrowed from a fighter jet for that test flight) failed - a crew and cargo would have survived.
7. Shuttle ran on hydrogen-oxygen fuel cells (Apollo derived tech) thus limiting its on-orbit time to a few days, DC could stay on-orbit (unmanned or at ISS) for half a year
8. Shuttle was not suffiently automated to fly unmanned, DC is full-automated and can be operated manned, or unmanned depending on mission
9. Shuttle used highly-toxic fuels like hydrazine, DC does not.
10. Shuttle used very fragile 1970's era thermal tiles, DC (like Dragon) uses much newer and better materials (not the SAME materials as Dragon, but newer just as Dragon uses newer)
I could add more and the guys from Sierra could probably add another hundred differences, but I believe I have shown enough to illustrate how ignorant it is to say shuttle was bad and therefore DreamChaser is bad
Sierra Nevada's design was a riff on the Space Shuttle, which is just a terrible way to get to space and back. Yes, you have a reusable orbiter, but you add a crapload of launch weight. That means you can carry less. The goal of these current projects is to act as a space-taxi for passengers, not multi-week flights like the Shuttle. No one wants your design, people.
Calling it a riff on the Space Shuttle is a gross oversimplification. The Dream Chaser is a much smaller and simpler design than the Space Shuttle. The Space Shuttle was a delta wing whereas the Dream Chaser is a lifting body. A lifting body is a much simpler design and and more "robust" than the more semi-traditional aircraft design of the Space Shuttle.
Wings are extra mass. But so are parachutes and fuel to land. There is no free lunch with reusability. I'm more a fan of SpaceX's Dragon V2 more due to SpaceX's aspirations (and propulsive landing is cool.) But Dream Catcher is a viable design and I'd like to see competing approaches tried in the real world. That's how we learn. I do think that the "stop work" is bullshit.
Some privacy policy Slashdot.