Author Topic: SpaceX Falcon 9 : AMOS-17 : August 6, 2019 : DISCUSSION (Read 76277 times)

Steven Pietrobon · « **Reply #20 on:** 07/07/2019 03:34 am »

Quote from: zubenelgenubi on 07/07/2019 02:29 am

Going deeper into Ben Cooper's web site, to his AMOS-17 page:
Quote
Falcon 9 launches AMOS-17 7/27/19, 6:49 pm [EDT]
This equals 0249 7/28 UTC

However, I don't know if this is the most current information that he has.

If UTC is +4 hours EDT, then 2019 July 27 6:49 pm EDT should be 2019 July 27 22:49 UTC.

scr00chy · « **Reply #21 on:** 07/07/2019 11:43 am »

Quote from: zubenelgenubi on 07/07/2019 02:29 am

Going deeper into Ben Cooper's web site, to his AMOS-17 page:
Quote
Falcon 9 launches AMOS-17 7/27/19, 6:49 pm [EDT]

Nice find! The next page also confirms that the late September launch is Starlink, not Kacific-1.

gongora · « **Reply #22 on:** 07/08/2019 03:26 am »

Photo from the Spacecom website: AMOS-17 satellite at Boeing
Also site at: https://www.amos17.africa/EN/aboutsat.html

RocketLover0119 · « **Reply #23 on:** 07/09/2019 11:21 pm »

I haven't seen anything about a landing this mission, is this true? And if so, why? if it's a reused core I dunno why they would want to trash it...

gongora · « **Reply #24 on:** 07/10/2019 12:05 am »

Quote from: RocketLover0119 on 07/09/2019 11:21 pm

I haven't seen anything about a landing this mission, is this true? And if so, why? if it's a reused core I dunno why they would want to trash it...

Depends how much performance the customer contracted (and paid) for. We're really not seeing much of anything for this mission, has it been trucked to the Cape yet?

RocketLover0119 · « **Reply #25 on:** 07/10/2019 12:23 am »

Quote from: gongora on 07/10/2019 12:05 am

Quote from: RocketLover0119 on 07/09/2019 11:21 pm
I haven't seen anything about a landing this mission, is this true? And if so, why? if it's a reused core I dunno why they would want to trash it...

Depends how much performance the customer contracted (and paid) for. We're really not seeing much of anything for this mission, has it been trucked to the Cape yet?

If your talking about the sat being moved, dunno, booster, yes. Would think the booster seen in front of the 39a HIF that we were thinking was the CRS-18 core was the core for this mission, but who knows, still about 3 or so weeks until the current NET so plent of time still.

gongora · « **Reply #26 on:** 07/10/2019 12:32 am »

I meant the sat.

RocketLover0119 · « **Reply #27 on:** 07/10/2019 12:35 am »

Quote from: gongora on 07/10/2019 12:32 am

I meant the sat.

Then dunno, less than 3 weeks until the current NET so if it hasn't already, it should be very soon.

crandles57 · « **Reply #28 on:** 07/10/2019 11:39 am »

Pietrobon has
http://www.sworld.com.au/steven/space/uscom-man.txt
#27 Jul 19 Falcon 9 v1.2B5 F18 AMOS 17
(think that has been there a few days.)

but Cooper
http://www.launchphotography.com/Delta_4_Atlas_5_Falcon_9_Launch_Viewing.html
July 8 update now has:

Quote

Then, a Falcon 9 from pad TBD will launch the
AMOS-17 comsat for Israel on early August TBD, in the early evening EDT.

Steven Pietrobon · « **Reply #29 on:** 07/10/2019 11:44 am »

Quote from: crandles57 on 07/10/2019 11:39 am

Pietrobon has
http://www.sworld.com.au/steven/space/uscom-man.txt
#27 Jul 19 Falcon 9 v1.2B5 F18 AMOS 17
(think that has been there a few days.)

I got that date from here! Date now changed to first week of August.

ZachS09 · « **Reply #30 on:** 07/13/2019 01:57 pm »

https://www.spacexfleet.com/next

AMOS 17 will be expendable, but I don't know how exactly.

Will they remove the recovery equipment and burn all the prop in Stage 1, or are they gonna do another landing test using a risky profile (leaving the legs, grid fins, and thrusters on)?

2megs · « **Reply #31 on:** 07/13/2019 04:25 pm »

Quote from: ZachS09 on 07/13/2019 01:57 pm

https://www.spacexfleet.com/next

AMOS 17 will be expendable, but I don't know how exactly.

Will they remove the recovery equipment and burn all the prop in Stage 1, or are they gonna do another landing test using a risky profile (leaving the legs, grid fins, and thrusters on)?

Expendable doesn't seem necessary. They've launched heavier payloads to GTO (B1046.2, Merah Putih / Telkom-4, 5800kg to around GEO-1925), stuck the landing, and successfully reused the same booster for subsequent flights.

Maybe there's something contractual lingering from AMOS-6 about getting the full performance of the booster? Or maybe we're just seeing the life limits of the early Block 5 builds, and they're going to extract the last value from one of their thrice-used boosters?

wannamoonbase · « **Reply #32 on:** 07/13/2019 04:31 pm »

Quote from: ZachS09 on 07/13/2019 01:57 pm

https://www.spacexfleet.com/next

AMOS 17 will be expendable, but I don't know how exactly.

Will they remove the recovery equipment and burn all the prop in Stage 1, or are they gonna do another landing test using a risky profile (leaving the legs, grid fins, and thrusters on)?

Seems like they would only do this if required by contract or for a given amount of delta V that can only come with being expendable.

It's a shame to see a booster expended, but isn't it great that we expect recovery?

gongora · « **Reply #33 on:** 07/13/2019 05:51 pm »

Has anyone seen a real mass for this one? The numbers I've seen look like they're just guesses based on the satellite bus used.

ZachS09 · « **Reply #34 on:** 07/13/2019 10:30 pm »

https://nextspaceflight.com/launches/details/85

Here, it says the mass is 5.5 tons. I'm not sure if that's an estimate, though.

Anyway, another reason why I have this next link is because B1047 should be making its third flight on this mission.

ZachS09 · « **Reply #35 on:** 07/13/2019 10:33 pm »

Quote from: wannamoonbase on 07/13/2019 04:31 pm

Quote from: ZachS09 on 07/13/2019 01:57 pm
https://www.spacexfleet.com/next

AMOS 17 will be expendable, but I don't know how exactly.

Will they remove the recovery equipment and burn all the prop in Stage 1, or are they gonna do another landing test using a risky profile (leaving the legs, grid fins, and thrusters on)?

Seems like they would only do this if required by contract or for a given amount of delta V that can only come with being expendable.

It's a shame to see a booster expended, but isn't it great that we expect recovery?

It is, but my next question is this: has SpaceX tested every single EDL profile they came up with? If not, then it's understandable that more delta-v is needed to reach GEO.

That speculation is because of five straight missions in which Block 3/4 boosters were expended because they were obsolete, but they were testing different profiles.

Orbiter · « **Reply #36 on:** 07/14/2019 01:15 am »

Could be going to an elliptical GTO orbit with a very, very high apogee, thus needing the extra dV.

ulm_atms · « **Reply #37 on:** 07/14/2019 01:42 am »

They could be flying expendable to get this sat in service faster since they blew up the last one. It says they are using the full credits from the AMOS-6 mishap....anyone know those contracted orbit parameters?

I wonder what a fully expendable B5 could do. Sub GEO-1000?

GWR64 · « **Reply #38 on:** 07/14/2019 07:35 am »

Quote from: ulm_atms on 07/14/2019 01:42 am

They could be flying expendable to get this sat in service faster since they blew up the last one. ...

Amos-17 does not replace Amos-6 on 4° W. Amos-17 is for 17° E, replace Amos-5.

FutureSpaceTourist · « **Reply #39 on:** 07/17/2019 10:23 am »

https://twitter.com/amosspacecom/status/1151429998743556096

Quote

Check out the AMOS-17 satellite in its processing stage at Cape Canaveral!

AMOS-17 is ready for launch, stay tuned! #AMOS17 #launch #satellite #Spacecom