Quote from: Alexphysics on 12/22/2018 08:09 pmQuote from: SolSystem on 12/22/2018 07:56 pmSo I spoke with Michel Doyon, Manager, Flight Operations at the Canadian Space Agency today and the RCM flight is going to be delayed again. How long I don't know. He said RCM was supposed to use the NASA CRS-16 mission booster (B1050) which had the grid fin issue and "softly" landed in the water. Discussions between MDA, who contracted for the launch, and SpaceX are ongoing. Has anyone heard anything on a possible new launch date? Also which booster might it use? A previously flown own or new? I understand from other threads here that the B1050 booster is not likely to fly again??ThanksThat's weird because they have B1052 and B1053 out there and could use it :/They could always fly B1046 for a fourth time Maybe it's a cost issue. They were getting a good deal on the proven booster.
Quote from: SolSystem on 12/22/2018 07:56 pmSo I spoke with Michel Doyon, Manager, Flight Operations at the Canadian Space Agency today and the RCM flight is going to be delayed again. How long I don't know. He said RCM was supposed to use the NASA CRS-16 mission booster (B1050) which had the grid fin issue and "softly" landed in the water. Discussions between MDA, who contracted for the launch, and SpaceX are ongoing. Has anyone heard anything on a possible new launch date? Also which booster might it use? A previously flown own or new? I understand from other threads here that the B1050 booster is not likely to fly again??ThanksThat's weird because they have B1052 and B1053 out there and could use it :/They could always fly B1046 for a fourth time
So I spoke with Michel Doyon, Manager, Flight Operations at the Canadian Space Agency today and the RCM flight is going to be delayed again. How long I don't know. He said RCM was supposed to use the NASA CRS-16 mission booster (B1050) which had the grid fin issue and "softly" landed in the water. Discussions between MDA, who contracted for the launch, and SpaceX are ongoing. Has anyone heard anything on a possible new launch date? Also which booster might it use? A previously flown own or new? I understand from other threads here that the B1050 booster is not likely to fly again??Thanks
Quote from: SolSystem on 12/22/2018 08:26 pmMaybe it's a cost issue. They were getting a good deal on the proven booster.No. Cost has nothing to do with it.Remanifesting of Booster Cores will be in order if sticking with a reused core.
Maybe it's a cost issue. They were getting a good deal on the proven booster.
Quote from: SolSystem on 12/22/2018 08:26 pmQuote from: Alexphysics on 12/22/2018 08:09 pmQuote from: SolSystem on 12/22/2018 07:56 pmSo I spoke with Michel Doyon, Manager, Flight Operations at the Canadian Space Agency today and the RCM flight is going to be delayed again. How long I don't know. He said RCM was supposed to use the NASA CRS-16 mission booster (B1050) which had the grid fin issue and "softly" landed in the water. Discussions between MDA, who contracted for the launch, and SpaceX are ongoing. Has anyone heard anything on a possible new launch date? Also which booster might it use? A previously flown own or new? I understand from other threads here that the B1050 booster is not likely to fly again??ThanksThat's weird because they have B1052 and B1053 out there and could use it :/They could always fly B1046 for a fourth time Maybe it's a cost issue. They were getting a good deal on the proven booster.No. Cost has nothing to do with it.Remanifesting of Booster Cores will be in order if sticking with a reused core.
Falcon 9 • Radarsat C-1/2/3...[February 15, 2019] Vandenberg news, no earlier than March 9, if the core level is confirmed as B1046.4, it is the fourth flight of the same core level.
http://www.sworld.com.au/steven/space/uscom-man.txthas Mar 6thspaceflightfans seems down.
Agree that Chinese information on US launches is not that reliable. It's unlikely that Radarsat will launch on a 3rd or even 4th flight - there should have been boosters already available for that. Teslarati / Eric Ralph speculated that CSA has a contract for a low-worn booster for their billion dollars satellites....
Quote from: PM3 on 02/18/2019 12:12 amAgree that Chinese information on US launches is not that reliable. It's unlikely that Radarsat will launch on a 3rd or even 4th flight - there should have been boosters already available for that. Teslarati / Eric Ralph speculated that CSA has a contract for a low-worn booster for their billion dollars satellites....First, the launch contract for RSM was signed quite a bit ago, in 2013.At that time there was no Falcon 9 v1.1 flying, let aside Falcon 9 FT with any of its *blocks*. Also, even the concept of "low-warn booster" pricing did not exist, it emerged couple years later. Also, the contract was originally made for the launch in 2018, five years in advance. Therefore, I suspect its language had a fair amount of freedom for both provider and buyer. And finally, in 2013 the advertised price for launch with Falcon 9 was $54 M, it was very inexpensive option at the time.Second, as I recall RSM satellites are not that expensive, they do not belong to a "billion dollars satellites" class. The whole project cost may be something around that number (in Canadian $), but it includes R&D money, the cost of ground infrastructure and other "items", which are not satellites. If we are considering launch failure and evaluating possible losses - we are calculating REPLACEMENT cost, and it is typically much lower than the cost of the whole project.Specifically, eoportal.org gives $110 M Cdn as a price tag for all three sats:"Sept. 4, 2013: The Magellan Aerospace Corporation (Magellan) was awarded a contract of $110 million Cdn. From MDA for the manufacture of the three RCM spacecraft."(the hyperlink to the source at eoportal does not work, here is the correct one)The bottom line, IMHO:There is no ground for speculations about "low-worn booster" thing existing in contract. It may be right, it may be wrong - we just do not know, and we have no evidence to support.Hopefully this will change - eventually
Although each rocket SpaceX builds can be quite different from each other in terms of general quirks and bugs, the only obvious difference between B1050 and any other flight-proven Falcon 9 booster in SpaceX’s fleet was its low-energy CRS-16 trajectory, something that would have enabled a uniquely gentle reentry and landing shortly after launch. In other words, likely out of heaps of caution and conservatism if it is the case, customers CSA and MDA may have requested (or contractually demanded) that SpaceX launch the Radarsat constellation on a flight-proven Falcon 9 with as little wear and tear as possible, in which case B1050 would have been hard to beat.
There is no ground for speculations about "low-worn booster" thing existing in contract. It may be right, it may be wrong - we just do not know, and we have no evidence to support.
Why would they only postpone Radarsat because of the risk of another hydraulic pump failure, but still launch Iridium (11 January), Nusantara Satu (planned for 22 February) and DM1 (planned for 2 March)?
QuoteWhy would they only postpone Radarsat because of the risk of another hydraulic pump failure, but still launch Iridium (11 January), Nusantara Satu (planned for 22 February) and DM1 (planned for 2 March)?Because:Both Iridium and Nusantara Satu are ASDS-type landings. The hydraulic pump failure occurred on a RTLS-type mission, which has different flight profile and different landing profile. So, it is not unreasonable to suggest this failure mode does not apply to ASDS. Yes, this is speculation - un-grounded - just like your variant. We both do not know the necessary facts (and never will).In contrast, your last example, SpX-DM1, does not belong to the group for sure, because it's a high profile mission where the schedule - when set - does have very high priority. In other words, SpaceX will definitely prefer to risk the booster landing over another launch delay.It seems to me you still missing the point (or, likely, I did not do good job with explaining it):I am NOT trying to say my explanation is right, nor his explanation is wrong - no.Neither I am trying to say my explanation is better than his.I gave my variant just to show that his is not the only one.
http://www.spaceflightfans.cn/event/falcon-9-rocket-launch-radarsat?instance_id=2321Quote from: Google TranslateFalcon 9 • Radarsat C-1/2/3...[February 15, 2019] Vandenberg news, no earlier than March 9, if the core level is confirmed as B1046.4, it is the fourth flight of the same core level.
[February 22, 2019] The news was incorrect and the task is not earlier than March.