On September 16th, NASA officially declared the winners for the Commercial Crew Transportation Capability (CCtCAP) contract, the US attempt to get back into business of manned spaceflight. And who did they choose? Boeing and SpaceX, aka two capsule designs. Sierra Nevada's Dream Chaser was left out, most likely because it is an orbiter.
Seriously NASA: are you that scared? :-/
Granted, a capsule is safer during a re-entry because it's rotational symmetry guarantees that it's heat shield will always point into the right direction, an advantage a shuttle will never have. But let's be honest: aligning the spacecraft properly for a re-entry was never an issue before. The reason why NASA lost two shuttles was because they a) ignored safety concerns from manufacturers, and b) chose a configuration and a heat shield concept that was prone to accidents and a maintenance nightmare right from the start! Dream Chaser did away with both issues that ultimately grounded the space shuttle, yet NASA decided otherwise and chose a company which "promises new jobs in several states" (*cogh!*) and a company whose PR department is louder than any rocket engine at lift-off.
I seriously hope that Sierra Nevada Coorporation will offer Dream Chaser during the next round of unmanned resupply contracts to the ISS to prove their concept works, and who knows - ESA already had a work with the company about putting the orbinter onto an Ariane 5 as a replacement for the cancelled Hermes project. ^^
Sources:
www.spaceflightnow.com/news/n1…spaceflightnow.com/news/n1401/…