Author Topic: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021  (Read 122188 times)

Offline Rondaz

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #140 on: 11/18/2021 05:50 pm »
NASA's DART Mission Will Move Mountains In Space


Offline Rondaz

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #141 on: 11/19/2021 02:12 am »
Next Milestone Complete on DART Spacecraft as Launch Date Nears

Linda Herridge Posted on November 18, 2021

NASA’s Double Asteroid Redirection Test (DART) spacecraft was attached to its payload adapter on Nov. 11 inside the SpaceX Payload Processing Facility at Vandenberg Space Force Base in California. An integrated team of workers with NASA’s Launch Services Program (LSP), SpaceX, and the Johns Hopkins Applied Physics Laboratory (APL) completed the work in preparation for a late November launch.

DART will be the first mission to test technologies for preventing a hazardous asteroid from impacting Earth. DART’s target asteroid is not a threat to Earth, but the mission will prove that a spacecraft can autonomously navigate to a target asteroid and kinetically impact it.

“Mating the payload to the adapter is a very important milestone for the mission since it is the critical interface between the spacecraft and launch vehicle, where the two come together and need to separate cleanly to send the spacecraft on its planetary defense journey,” said Marisa Wyssling-Horn, integration engineer with LSP.

DART was lifted from its processing stand and lowered onto the launch vehicle payload adapter. Measuring just 24 inches in diameter, this is the first time that this smaller size adapter is being used. The team then mated the electrical connectors between the spacecraft and the adapter. Finally, the integrated stack of spacecraft and adapter was secured to the payload attach fitting. The mate process took about a day to complete.

“It is also an exciting milestone since it is the first time that the full team, which had been working together for years, came together in person on a major operation,” Wyssling-Horn said.

Final closeouts will occur over the next two weeks in preparation for launch aboard a SpaceX Falcon 9 rocket from Vandenberg during a launch window that opens at 10:21 p.m. PST, Nov. 23 (1:21 a.m. EST, Nov. 24). Next up, DART will be encapsulated in the payload fairing and attached to the Falcon 9 rocket to prepare for rollout to the launch pad.

The Johns Hopkins Applied Physics Laboratory has been directed to manage the DART mission for NASA’s Planetary Defense Coordination Office as a project of the agency’s Planetary Missions Program Office. The agency provides support for the mission from several centers, including the Jet Propulsion Laboratory in Southern California, Goddard Space Flight Center in Greenbelt, Maryland, Johnson Space Center in Houston, Glenn Research Center in Cleveland, and Langley Research Center in Hampton, Virginia. The launch is managed by NASA’s Launch Services Program, based at the agency’s Kennedy Space Center in Florida. SpaceX is the rocket provider for the DART launch.

https://blogs.nasa.gov/dart/2021/11/18/next-milestone-complete-on-dart-spacecraft-as-launch-date-nears/

Offline markbike528cbx

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #142 on: 11/19/2021 03:27 am »
Went past SLC-4E on an Amtrak train 1650 PST Nov 18.
 Falcon 9 was vertical on launch erector. 
It was _very_ dim, but no payload fairing was seen.

Offline zubenelgenubi

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #143 on: 11/19/2021 04:43 am »
Went past SLC-4E on an Amtrak train 1650 PST Nov 18.
 Falcon 9 was vertical on launch erector. 
It was _very_ dim, but no payload fairing was seen.
Yes, we expect the Static Fire will be performed without the payload attached.  SF should be soon!
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Offline scr00chy

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #144 on: 11/19/2021 10:23 am »
Static fire was supposed to happen yesterday, but I guess it got delayed. So maybe today?

https://twitter.com/StephenClark1/status/1461139079270215683

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Offline SPKirsch

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #146 on: 11/20/2021 02:28 am »
https://twitter.com/SpaceOffshore/status/1461847453980893185
Quote
Of Course I Still Love You droneship is about to depart the Port of Long Beach for the DART mission. Tug Scorpius is towing.

Offline SPKirsch

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #147 on: 11/20/2021 02:09 pm »
https://twitter.com/SpaceOffshore/status/1462065973385740298
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OCISLY droneship departed Long Beach overnight for the DART mission.

Tug Scorpius is towing OCISLY 652 km downrange to the LZ.

Offline Ken the Bin

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #148 on: 11/20/2021 08:16 pm »
This generic "Hazardous Operations" NGA notice looks like it is probably for this launch.

Quote from: NGA
200443Z NOV 21
NAVAREA XII 659/21(18,21).
EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS:
   A. 0543Z TO 0702Z DAILY 24 THRU 26 NOV
      IN AREA BOUND BY
      34-40N 120-40W, 34-40N 120-25W,
      34-09N 120-19W, 33-55N 120-20W,
      33-40N 120-23W, 33-40N 120-25W,
      34-17N 120-38W.   
   B. 0543Z TO 0706Z DAILY 24 THRU 26 NOV
      IN AREA BOUND BY
      29-35N 119-38W, 28-06N 119-37W,
      27-12N 119-27W, 27-26N 118-30W,
      28-43N 118-58W, 29-35N 119-28W.
2. CANCEL THIS MSG 260806Z NOV 21.

Offline jcm

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #149 on: 11/21/2021 12:12 am »
Re questions about the parking orbit: there's a trajectory now on JPL Horizons.
It implies a 230 x 300 km x 64.7 deg parking orbit  (J2000 rather than TEME) followed by a burn to 263 x -135281 km x 64.7
(C3 of 6.52 km2/s2).

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Offline illectro

If that inclination is correct then the 2nd stage is going to need to make a ~20 degree turn. (Based on the location of the landing barge)
« Last Edit: 11/21/2021 04:07 am by illectro »

Offline LouScheffer

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #151 on: 11/21/2021 03:04 am »
If that inclination [64.7o ] is correct then the 2nd stage is going to need to make a ~20 degree turn.
Don't think so.  From Visual Satellite Observer's website:
Quote
Vandenberg is located on the central western coast of California at approximately 34.4 degrees North latitude. Launch azimuth is constrained to between 147 and 201 degrees, though sub-orbital launches are allowed up to 281 degrees. Satellite inclinations between 56 and 104 degrees are accomplished at Vandenberg.

Offline illectro

Don't think so.
I should clarify, that the turn is required because the 1st stage ASDS location forces an launch azimuth of ~170degrees, requiring the second stage to turn after separation.

Offline LouScheffer

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #153 on: 11/21/2021 02:28 pm »
Don't think so.
I should clarify, that the turn is required because the 1st stage ASDS location forces an launch azimuth of ~170degrees, requiring the second stage to turn after separation.
Certainly looks like it.  I'm guessing they don't want to fly over the channel islands.  However, from an energy point of view, it would make more sense to turn as soon as the clear the islands, then station the ASDS closer to Mexico.  But maybe their first stage does not know how to do that, and there is sufficient performance do the turn with the second stage (according to LSP, Falcon 9 can put 2535 kg to C3=7, but Dart only masses 610 kg).   The losses from a 20o turn at staging velocity should be well within this margin.

Offline SpaceFinnOriginal

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #154 on: 11/21/2021 04:33 pm »
Re questions about the parking orbit: there's a trajectory now on JPL Horizons.
It implies a 230 x 300 km x 64.7 deg parking orbit  (J2000 rather than TEME) followed by a burn to 263 x -135281 km x 64.7
(C3 of 6.52 km2/s2).
Is 'parking orbit' actually means deployment orbit?

Offline zubenelgenubi

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #155 on: 11/21/2021 09:08 pm »
Re questions about the parking orbit: there's a trajectory now on JPL Horizons.
It implies a 230 x 300 km x 64.7 deg parking orbit  (J2000 rather than TEME) followed by a burn to 263 x -135281 km x 64.7
(C3 of 6.52 km2/s2).
Is 'parking orbit' actually means deployment orbit?
Yes



November 24 UTC is scheduled to be an orbital launch "three-fer".
This launch;
Prichal from Baikonur;
(likely) ChinaSat-6D from Xichang;
Fangzhou-2F from Jiuquan.

If one allows a 24 hour period beginning with the DART launch, a fourth orbital launch is scheduled: EKS #5 from Plesetsk.
« Last Edit: 11/23/2021 11:35 pm by zubenelgenubi »
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Offline lenny97

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« Last Edit: 11/21/2021 09:10 pm by lenny97 »
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Offline Jim

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #157 on: 11/21/2021 09:24 pm »
Re questions about the parking orbit: there's a trajectory now on JPL Horizons.
It implies a 230 x 300 km x 64.7 deg parking orbit  (J2000 rather than TEME) followed by a burn to 263 x -135281 km x 64.7
(C3 of 6.52 km2/s2).
Is 'parking orbit' actually means deployment orbit?

No, parking orbit is after 2nd stage first burn and before restart.  Deployment is after 2nd burn and is not an earth orbit.

Offline Rondaz

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #158 on: 11/21/2021 09:30 pm »
LIVE | NASA's Double Asteroid Redirection Test (DART) investigation and engineering news conference


Offline Rondaz

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Re: SpaceX Falcon 9 : NASA DART : Vandenberg : Nov. 23/24, 2021
« Reply #159 on: 11/21/2021 09:46 pm »
Two departures from the Port of Long Beach overnight for the DART mission.

GO Quest as droneship support for OCISLY - first West Coast mission.

NRC Quest for fairing recovery.

https://twitter.com/SpaceOffshore/status/1462475924398649352

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