Boeing and Spacex is practically in race to human flight launch first. It's rocket-ULA Atlas-V have excellent record already in industry. But the Starliner aerodynamic problems aerodynamic/mass due to changes in design/size and water landing(Is orion immune to this?) . How is Starliner doing and human rating of Atlas-V doing so far are they still planing for 2018-2019 launch ferry window?
closed as unclear what you're asking by Hohmannfan♦, Nathan Tuggy, ForgeMonkey, kim holder Aug 26 '16 at 17:13
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
Presumably the aerodynamic problems with the Starliner are specific to its use with the Atlas V launcher. The 4.6m diameter of the capsule has to "neck down" onto the 3m upper stage of the Atlas, and the shape of that transition has significant aerodynamic effects.
Since Orion CEV is much too heavy for Atlas V, it will have a different set of problems. Orion's 5 meter diameter matches that of the DCSS-5 used with Delta IV Heavy, so it won't have that kind of "neck down" adapter, so it should be aerodynamically relatively trouble-free on that launcher.