Virgin's SpaceShipTwo Gets Green Light for Powered Tests
The SpaceShipTwo commercial spaceship and its launch vehicle, WhiteKnightTwo, shown here in glide test flights, have received FAA permission for experimental, rocket-powered, suborbital launch tests. (Source: Virgin Galactic)
Naperlou agreed, it's going to be extremely interesting to see how the private side of space exploration progresses and how fast.Already, with the Virgin entry, we see thinking "out of the box".(I hate that phrase but it certainly think applies here.)I would be very disappointed if the only ultimate result was tourism but it's a good beginning.There must be some quick method to recoup the investment and this is a very good way to initiate that ROI.I am particularly interested in the carbon structures used in the fabrication.To me this is really fascinating.
Mydesign, thanks for the clarification. My interest here has been in materials for the structure, not on engine types, so I don't know whether Virgin has released that information. Perhaps there are details on their website or on Scaled Composites' website, which the article gives links to.
Ann, Cryogenic is a type of rocket engines which uses fuels in liquid stage (Compressed gas) at a very low temperature (Below -200 degree Celsius). The main advantages of cryogenic engines are it can carry more pay loads. Booster rockets are multi stage rockets, which can be used for a short duration with small pay loads. Normally they are used in initial stage of space vehicles, to create extra thrust against the gravitational forces.
My question is about what types of engines are using in virgin space ship (Is it a cryogenic based or only with booster rockets)
silveradocyn, SS2 may well have some re-engineering being done for aerodynamics, but it seemed to me that, as Beth said, it's pretty late to be doing major changes to the structural design. I had originally said it therefore seemed unlikely that it Scaled Composites would have gone all the way back to the heavy-duty CFD that Beth was originally suggesting. Do you have other info you can share with us?
Ann, It seems extremely likely that Spaceshiptwo has been having some aerodynamic work done. Its last flight was in Sept, and it departed controlled flight. Normally a long delay like this would imply some significant issue(s) had to be addressed.
Ok, that makes sense given where they are in the development cycle. But in terms of testing aerodynamics, it's pretty late in the game to make major changes, so this is all about minor adjustments and proving out the structural design.
Researchers working with additive manufacturing have said multimaterial techniques will allow industry “to fabricate materials with combinations of density, strength, and thermal expansion that do not exist [yet].”
The term "multiphysics" is used to describe the simulation of multiple types of physics and their influence on one another -- for example, the investigation of the behavior of a chemical in liquid form will involve both chemistry and fluid dynamics.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.