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#240
by
douglas100
on 23 Mar, 2012 21:59
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It'd be great for Mars EDL... It'd allow a fully-fueled Mars Ascent Vehicle to be landed on the surface ready to go.
The IRVE doesn't look terribly reusable... Could it be reused?
I believe Lavochkin first developed their system for Mars EDL, but I don't want to take this further OT.
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#241
by
hkultala
on 29 Mar, 2012 08:32
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The PCM also appears to have been stretched by roughly 1/3 of its previous length.
Yes that would be the PCM+ configuration, with an extra band added to add more pressurized volume/cargo lift. This configuration depends on the introduction of the Castor XL upper stage for performance increase. The first flight of Castor 30 XL will be on Taurus II flight 5, or OSC CRS flight 3.
I have seen quotes of the Enhanced Cygnus mass of about 6.5 mt which includes 2.7 mt of payload. I assume that Cygnus would do all the orbital maneuvers from the Antares insertion point of 200 km.
But if I look at the capabilities of Antares 130 to 200 km and ISS inclination (using Castor 30XL), its capability is about 5.5 mt (see attached plot from Orbital's Antares brochure).
What am I missing?
The delta-v capacity of Cygnus itself? Second stage goes "almost to orbit", cygnus uses it's own engine to achieve orbit and rise to iss orbit?
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#242
by
manboy
on 24 Apr, 2012 23:01
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#243
by
Jim
on 25 Apr, 2012 01:25
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So what's this for?
need context. Which pic is it from?
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#244
by
manboy
on 25 Apr, 2012 04:39
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So what's this for?
need context. Which pic is it from?
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#245
by
woods170
on 25 Apr, 2012 06:37
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So what's this for?
need context. Which pic is it from?
There are four of those units on the forward end of the PCM, clocked 90 degrees apart. To my untrained eye they look like forward facing RCS thrusters.
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#246
by
manboy
on 25 Apr, 2012 06:54
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So what's this for?
need context. Which pic is it from?
There are four of those units on the forward end of the PCM, clocked 90 degrees apart. To my untrained eye they look like forward facing RCS thrusters.
I also thought that but I've never seen them mentioned before.
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#247
by
woods170
on 25 Apr, 2012 17:28
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So what's this for?
need context. Which pic is it from?
There are four of those units on the forward end of the PCM, clocked 90 degrees apart. To my untrained eye they look like forward facing RCS thrusters.
I also thought that but I've never seen them mentioned before.
They are clearly visible in
this artist impression from Orbitals CRS micro-siteand also in
this PDF from Orbital
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#248
by
manboy
on 25 Apr, 2012 20:48
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So what's this for?
need context. Which pic is it from?
There are four of those units on the forward end of the PCM, clocked 90 degrees apart. To my untrained eye they look like forward facing RCS thrusters.
I also thought that but I've never seen them mentioned before.
They are clearly visible in this artist impression from Orbitals CRS micro-site
and also in this PDF from Orbital
They appear and disappear on several conceptual drawings.
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#249
by
Jorge
on 25 Apr, 2012 21:03
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#250
by
woods170
on 26 Apr, 2012 07:06
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So what's this for?
need context. Which pic is it from?
There are four of those units on the forward end of the PCM, clocked 90 degrees apart. To my untrained eye they look like forward facing RCS thrusters.
I also thought that but I've never seen them mentioned before.
They are clearly visible in this artist impression from Orbitals CRS micro-site
and also in this PDF from Orbital
They appear and disappear on several conceptual drawings.
So? They are there on the flight hardware. The conceptual drawings don't always show the final 'look' of the hardware. That is particularly true for the earlier conceptual drawings.
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#251
by
spectre9
on 25 May, 2012 02:40
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http://www.nasa.gov/centers/wallops/news/boldenvisit.htmlCharlie having a look at the Cygnus.
Other space craft are stealing the lime light right now
It seems to me like the volume of Cygnus is much more than the competition especially in the enhanced configuration.
High commonality with MPLM I'm guessing being built by Thales Alenia Space.
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#252
by
Rik ISS-fan
on 25 May, 2012 09:50
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High commonality with MPLM I'm guessing being built by Thales Alenia Space.
Indeed the pressurized section is being build in Italy by Thales Alenia Space. Thales Alenia Space used the same technology for it as for the MPLM's, Columbus, Node 2 and 3 and the pressurized section of the ATV. The only difference is the smaller diameter.
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#253
by
Chris Bergin
on 05 Jun, 2012 01:59
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#254
by
AnalogMan
on 03 Jul, 2012 14:42
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#255
by
Lars_J
on 03 Jul, 2012 21:08
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Update from GSFC today on Demo launch:
COTS OSC Demo-1: Launch delayed until 12/12/2012
(Source: GSFC Mission Activity Forecast 6/29/2012)
http://msdb.gsfc.nasa.gov/change_log.php
If this the 1st COTS demo flight that is delayed - has there been any word on the first Antares test/demo launch flight? (sorry if wrong thread)
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#256
by
Jose
on 03 Jul, 2012 21:12
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#257
by
Robotbeat
on 03 Jul, 2012 21:14
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#258
by
Salo Ukr
on 07 Jul, 2012 07:33
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Meanwhile, the first Antares hold-down test at Pad 0-A is now scheduled for September. As part of its fight demonstration agreement with NASA, Orbital has to complete that test before it can launch Antares on its maiden flight, now scheduled for December. In the December flight, Antares will fly without its Cygnus cargo module. It would not be until next year, when Antares flies for the second time, that Orbital’s European-built Cygnus freighter would fly to orbit and berth with the space station. The first Antares/Cygnus flight was supposed to happen in December 2010.
http://www.spacenews.com/civil/120706-nash-replaces-reed-vcsfa.html
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#259
by
antonioe
on 09 Jul, 2012 15:45
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Meanwhile, the first Antares hold-down test at Pad 0-A is now scheduled for September. As part of its fight demonstration agreement with NASA, Orbital has to complete that test before it can launch Antares on its maiden flight, now scheduled for December. In the December flight, Antares will fly without its Cygnus cargo module.
http://www.spacenews.com/civil/120706-nash-replaces-reed-vcsfa.html
As I mentioned in the Antares thread, I think the Space News reporter had the Antares Test and the Obital Demo-1 flights confused. As far as anybody at Orbital knows, ORB D-1 is still scheduled for 12 December 2012 (knock on wood...)
