Quote from: adrianwyard on 03/19/2015 02:56 pmWhile the CRS-2 RFP talks about docking (IDA) and berthing (CBM) being options, it also says that they need a CBM solution in the mix because of its width. See Answer 20 here: https://prod.nais.nasa.gov/eps/eps_data/160022-OTHER-003-001.pdf so that implies that at least SpaceX or Orbital ATK will get chosen.CRS-2 RFP calls for (among other things) pressurized cargo up/down per-flight range of: M01 bag 0-10; M02 bag 10-TBP; M03 bag 0-6. How those bags fit with respect to NDS, Cygnus mini-CBM and CBM is shown in the attached figure below.edit: added ISPR.
While the CRS-2 RFP talks about docking (IDA) and berthing (CBM) being options, it also says that they need a CBM solution in the mix because of its width. See Answer 20 here: https://prod.nais.nasa.gov/eps/eps_data/160022-OTHER-003-001.pdf so that implies that at least SpaceX or Orbital ATK will get chosen.
OK folks, don’t get all “un-hinged” about the folding fin concept...
Quote from: Rocket Science on 03/20/2015 09:06 pmOK folks, don’t get all “un-hinged” about the folding fin concept... You do realize that almost every Navy jet has folded wings, including the F/A-18. I'm pretty sure the F-4 Phantom is the fastest jet with folding wings, with a top speed over Mach 2.
Quote from: spacetech on 03/20/2015 10:37 pmQuote from: Rocket Science on 03/20/2015 09:06 pmOK folks, don’t get all “un-hinged” about the folding fin concept... ;DYou do realize that almost every Navy jet has folded wings, including the F/A-18. I'm pretty sure the F-4 Phantom is the fastest jet with folding wings, with a top speed over Mach 2.Deja vu.
Quote from: Rocket Science on 03/20/2015 09:06 pmOK folks, don’t get all “un-hinged” about the folding fin concept... ;DYou do realize that almost every Navy jet has folded wings, including the F/A-18. I'm pretty sure the F-4 Phantom is the fastest jet with folding wings, with a top speed over Mach 2.
OK folks, don’t get all “un-hinged” about the folding fin concept... ;D
Quote from: adrianwyard on 03/19/2015 02:56 pmWhile the CRS-2 RFP talks about docking (IDA) and berthing (CBM) being options, it also says that they need a CBM solution in the mix because of its width. See Answer 20 here: https://prod.nais.nasa.gov/eps/eps_data/160022-OTHER-003-001.pdf so that implies that at least SpaceX or Orbital ATK will get chosen.CRS-2 RFP calls for (among other things) pressurized cargo up/down per-flight range of: M01 bag 0-10; M02 bag 10-TBP; M03 bag 0-6. How those bags fit with respect to NDS, Cygnus mini-CBM and CBM is shown in the attached figure below.edit: add ISPR; edit: add NDS 120cm; add NDS petals; add M03 bag fit through NDS.
Quote from: joek on 03/20/2015 02:41 amQuote from: adrianwyard on 03/19/2015 02:56 pmWhile the CRS-2 RFP talks about docking (IDA) and berthing (CBM) being options, it also says that they need a CBM solution in the mix because of its width. See Answer 20 here: https://prod.nais.nasa.gov/eps/eps_data/160022-OTHER-003-001.pdf so that implies that at least SpaceX or Orbital ATK will get chosen.CRS-2 RFP calls for (among other things) pressurized cargo up/down per-flight range of: M01 bag 0-10; M02 bag 10-TBP; M03 bag 0-6. How those bags fit with respect to NDS, Cygnus mini-CBM and CBM is shown in the attached figure below.edit: add ISPR; edit: add NDS 120cm; add NDS petals; add M03 bag fit through NDS.Hold on a minute...Are those petals really the bounding box? Or are there petals on both androgynous sides of the port, creating an inscribed circle using six petals? I'm not certain.Edit: Attached is an image Wikipedia uses for the NDS.
Quote from: Burninate on 03/21/2015 01:12 amAre those petals really the bounding box? Or are there petals on both androgynous sides of the port, creating an inscribed circle using six petals? I'm not certain.If I understand correctly, I think what Joek is showing is a situation where the adapter on station has fixed petals, but the VV petals are removed, so the cargo can be threaded through one triad. Is that possible?
Are those petals really the bounding box? Or are there petals on both androgynous sides of the port, creating an inscribed circle using six petals? I'm not certain.
https://twitter.com/jeff_foust/status/577913004425007104Lindsey: will do a second Dream Chaser glide test by the end of this year (1st was in October 2013).
I know they would like to sell concept using a “standard fairing” but I’m curious if they ever considered a modified fairing with slots cut-out for the fins. This would eliminate the need for folding fins; if the wind tunnel would confirm it and the faring integrity maintained without hanging on separation...
Quote from: spacetech on 03/20/2015 10:37 pmQuote from: Rocket Science on 03/20/2015 09:06 pmOK folks, don’t get all “un-hinged” about the folding fin concept... You do realize that almost every Navy jet has folded wings, including the F/A-18. I'm pretty sure the F-4 Phantom is the fastest jet with folding wings, with a top speed over Mach 2.Making the folding wing joints safe during reentry would not be much different of a problem then making the flaps and landing gear plasma tight.In fact it's probably easier then then joints on the flaps since it doesn't need to move during reentry so people are pretty much worried about nothing.
If the wings are unfolded before arrival at the ISS (which should be the nominal procedure of unfolding the wings after payload sep from LV), then any no latching problems prior to departure from the ISS can be solved.