Author Topic: SpaceX F9 : Starlink 7 (v1.0 L6) : April 22, 2020 : Discussion (Read 62731 times)

daedalus1 · « **Reply #20 on:** 04/14/2020 09:11 pm »

Quote from: ZachS09 on 04/14/2020 09:08 pm

Why are they still doing direct insertions if the previous missions resulted in booster landing failures?

The last failure wasn't anything to do with direct insertion.

Robotbeat · « **Reply #21 on:** 04/14/2020 09:21 pm »

Quote from: daedalus1 on 04/14/2020 09:11 pm

Quote from: ZachS09 on 04/14/2020 09:08 pm
Why are they still doing direct insertions if the previous missions resulted in booster landing failures?

The last failure wasn't anything to do with direct insertion.

if anything, direct insertion reduces risk, if you have the performance margin. Consider the first F9 flight...

matthewkantar · « **Reply #22 on:** 04/14/2020 09:26 pm »

Quote from: ZachS09 on 04/14/2020 09:08 pm

Why are they still doing direct insertions if the previous missions resulted in booster landing failures?

If at first you don't succeed, try try again.

Vettedrmr · « **Reply #23 on:** 04/14/2020 10:21 pm »

I don't think there's a correlation between the orbital insertion profile (supposed to be easier on S1 recovery) and the two previous landing failures. First was due to wrong wind data being entered into the flight profile, the second was due (probably, never heard a definitive statement) to the Merlin failure.

Have a good one,
Mike

soltasto · « **Reply #24 on:** 04/14/2020 11:23 pm »

Quote from: ZachS09 on 04/14/2020 09:08 pm

Why are they still doing direct insertions if the previous missions resulted in booster landing failures?

Because none of the failures were caused by the launch profile

ZachS09 · « **Reply #25 on:** 04/15/2020 03:29 am »

Quote from: soltasto on 04/14/2020 11:23 pm

Quote from: ZachS09 on 04/14/2020 09:08 pm
Why are they still doing direct insertions if the previous missions resulted in booster landing failures?
Because none of the failures were caused by the launch profile

I understand. It just seemed that way to me after the last mission and I was kinda predicting bad luck on this next one.

FutureSpaceTourist · « **Reply #26 on:** 04/16/2020 07:22 am »

https://twitter.com/spaceflightnow/status/1250669689514201091

Quote

A Falcon 9 rocket has arrived at launch pad 39A at the Kennedy Space Center as SpaceX prepares for the launch of the seventh batch of Starlink broadband internet satellites.

FutureSpaceTourist · « **Reply #27 on:** 04/16/2020 10:21 am »

https://twitter.com/spaceflightnow/status/1250696150778294273

Quote

A Falcon 9 rocket is now upright at launch pad 39A as SpaceX prepares for a routine pre-launch test firing of the rocket's nine first stage engines ahead of next week's planned launch.

Chris Bergin · « **Reply #28 on:** 04/16/2020 01:00 pm »

https://twitter.com/julia_bergeron/status/1250770760668532736

Slarty1080 · « **Reply #29 on:** 04/16/2020 03:28 pm »

Quote from: ZachS09 on 04/15/2020 03:29 am

Quote from: soltasto on 04/14/2020 11:23 pm
Quote from: ZachS09 on 04/14/2020 09:08 pm
Why are they still doing direct insertions if the previous missions resulted in booster landing failures?
Because none of the failures were caused by the launch profile

I understand. It just seemed that way to me after the last mission and I was kinda predicting bad luck on this next one.

I doubt SpaceX would be influenced by superstitions such as bad luck

AndrewRG10 · « **Reply #30 on:** 04/16/2020 10:25 pm »

Quote from: Slarty1080 on 04/16/2020 03:28 pm

Quote from: ZachS09 on 04/15/2020 03:29 am
Quote from: soltasto on 04/14/2020 11:23 pm
Quote from: ZachS09 on 04/14/2020 09:08 pm
Why are they still doing direct insertions if the previous missions resulted in booster landing failures?
Because none of the failures were caused by the launch profile

I understand. It just seemed that way to me after the last mission and I was kinda predicting bad luck on this next one.
I doubt SpaceX would be influenced by superstitions such as bad luck

They've had a four-leaf clover on every mission patch from Falcon 1 flight 4 and onwards. That seems to have worked, 99% of missions succeed with the clover compared to 0% without it.

FutureSpaceTourist · « **Reply #31 on:** 04/17/2020 02:50 pm »

https://twitter.com/ken_kremer/status/1251157022592036868

Quote

10 AM Apr 17 Update: #SpaceX #Falcon9 rocket remains raised for static fire test - timing TBD- for #Starlink6 launch NET Apr 23

FutureSpaceTourist · « **Reply #32 on:** 04/17/2020 03:31 pm »

https://twitter.com/spaceflightnow/status/1251166011753205760

Quote

A test-firing of SpaceX’s next Falcon 9 rocket is expected later today at NASA’s Kennedy Space Center in Florida. LIVE UPDATES: spaceflightnow.com/2020/04/16/fal…

FutureSpaceTourist · « **Reply #33 on:** 04/17/2020 03:46 pm »

https://twitter.com/spaceflightnow/status/1251173949121220613

Quote

Vapors are streaming away from SpaceX’s Falcon 9 rocket on pad 39A in Florida, suggesting fueling is well underway for a static fire test at 12pm EDT (1600 GMT).

The test-firing is a key milestone before a planned Starlink satellite launch next week. spaceflightnow.com/2020/04/16/fal…

FutureSpaceTourist · « **Reply #34 on:** 04/17/2020 03:59 pm »

https://twitter.com/spaceflightnow/status/1251178240938516481

Quote

The strongback structure at pda 39A is being retracted into position for engine start. The test-firing of the Falcon 9 rocket’s nine first stage engines is moments away. spaceflightnow.com/2020/04/16/fal…

FutureSpaceTourist · « **Reply #35 on:** 04/17/2020 04:01 pm »

https://twitter.com/cbs_spacenews/status/1251178909565104133

Quote

F9/Starlink: Falcon 9 hot fire test at KSC/39A carried out at noon EDT; test appeared normal; will now await word from Space on data review, launch date

Edit to add:

https://twitter.com/cbs_spacenews/status/1251182840483586051

Quote

F9/Starlink: Here are two shots of today’s Falcon 9 hot-fire test at KSC/39A:

RocketLover0119 · « **Reply #36 on:** 04/17/2020 04:02 pm »

Static Fire!

https://twitter.com/SpaceflightNow/status/1251179064502730753

FutureSpaceTourist · « **Reply #37 on:** 04/17/2020 04:06 pm »

https://twitter.com/julia_bergeron/status/1251179936033001479

Quote

Static fire has occurred at 39A ahead of the Seventh Starlink mission scheduled NET 4/23. Stay tuned for confirmation from @SpaceX #Starlink

RocketLover0119 · « **Reply #38 on:** 04/17/2020 04:49 pm »

Confirmation of good test from SpaceX, core 51 being used, reusing fairing from AMOS-17.

https://twitter.com/SpaceX/status/1251190725741408257

FutureSpaceTourist · « **Reply #39 on:** 04/17/2020 04:53 pm »

twitter.com/spacex/status/1251190726987218944

Quote

The first stage rocket booster supporting this mission previously supported Crew Dragon’s first flight to the @space_station, launch of the RADARSAT Constellation Mission, and the fourth Starlink mission

https://twitter.com/spacex/status/1251190731949015040

Quote

The fairing previously supported launch of the AMOS-17 mission in August 2019