Interesting note from the post flight press conference. Cygnus will perform a small re-boost of the station. A followup question indicated no Dragon reboost capability is planned.
Quote from: Targeteer on 05/21/2018 04:32 pmInteresting note from the post flight press conference. Cygnus will perform a small re-boost of the station. A followup question indicated no Dragon reboost capability is planned.This is mentioned in the article.Any details on that?How is the ISS oriented for a Cygnus re-boost, and what is the load path?Cygnus pushing on the Node-1 Zenith CBM would impart torque on the whole ISS.edit: It's not a lot of torque on the joints from a structural standpoint.Do they just store up a lot of opposing angular momentum ahead of time?And how long do they plan to fire the 450 N main engine to get a significant reboost? That's approximately 1 mm/sec^2, or 1E-4 g for the 420 tonne ISS.One would also think it would be so much easier to reboost with Dragon-2 docked facing along the length of the ISS backbone from Node 1 to Zarya. They could yaw or pitch the ISS around by 180 degrees and use the backward facing 71 kN Super Dracos if they didn't want to use the multiple 400 N Dracos that are pointed somewhat along the line of the modules.
In the OA9 article is written that C2V2 (Common Communications for Visiting Vehicles) is "an effort to streamline communications for all visiting vehicles to the USOS (U.S. Operating Segment)"Cygnus is already using it.Dragon v2 (crew & cargo) and CST-100 apparently will use it as well.DreamChaser - I assume so (but hasn't seen it mentioned).Dragon v1 - to stop flying after 20th CRS mission, so not to be updated to C2V2?HTV / HTV-X - what about those?PS. Not really Cygnus questions, so please move to a more appropriate place if needed.