Author Topic: CANCELLED : Astra R3.3 - LV0011 - TROPICS Flight 2 - CCSFS SLC-46  (Read 11600 times)

Offline Conexion Espacial

  • Full Member
  • ****
  • Posts: 1810
  • Liked: 2480
  • Likes Given: 1916
This topic is for updates and discussion of this mission.

Astra Rocket 3.3 - LV0011 - TROPICS Flight 2
Launch Date and time: TBD 2022
Payloads: Two TROPICS satellites

Quote
A constellation of identical 3U CubeSats provide sounding (left CubeSat has a temperature profile of a simulated Tropical Cyclone (TC) from a numerical weather prediction (NWP) model) and 12-channel radiometric imagery (center CubeSat has simulated radiances from NWP model and radiative transfer model and the near right CubeSat has a single-channel radiance image of a TC) with a median revisit rate approaching 60 minutes to meet state-of-the-art performance.

The Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission will provide rapid-refresh microwave measurements over the tropics that can be used to observe the thermodynamics of the troposphere and precipitation structure for storm systems at the mesoscale and synoptic scale over the entire storm lifecycle. TROPICS comprises a constellation of CubeSats in three low-Earth orbital planes. Each CubeSat will host a high-performance radiometer scanning across the satellite track at 30 RPM to provide temperature profiles using seven channels near the 118.75 GHz oxygen absorption line, water vapor profiles using 3 channels near the 183 GHz water vapor absorption line, imagery in a single channel near 90 GHz for precipitation measurements, and a single channel at 205 GHz for cloud ice measurements.

More Information: https://tropics.ll.mit.edu/CMS/tropics/Mission-Overview
« Last Edit: 08/04/2022 10:32 pm by zubenelgenubi »
I publish information in Spanish about space and rockets.
https://twitter.com/conexionspacial

Offline Conexion Espacial

  • Full Member
  • ****
  • Posts: 1810
  • Liked: 2480
  • Likes Given: 1916
We know that the investigation of LV0010 is ongoing, but the satellite images show activity in SLC-46, maybe LV0011 is already on the platform.
I publish information in Spanish about space and rockets.
https://twitter.com/conexionspacial

Offline Conexion Espacial

  • Full Member
  • ****
  • Posts: 1810
  • Liked: 2480
  • Likes Given: 1916
The latest aerial images from NASASpacefligt indicate that there is nothing at SLC-46.
I publish information in Spanish about space and rockets.
https://twitter.com/conexionspacial

Offline Zed_Noir

  • Senior Member
  • *****
  • Posts: 4424
  • Canada
  • Liked: 1350
  • Likes Given: 1152
The latest aerial images from NASASpacefligt indicate that there is nothing at SLC-46.
However Astra can probably set up in 24 hours by staging from somewhere close by in Florida. IIRC everything for the launch was in 3 or 4 semi trailers. The issue that might hold up the launch set up process might be the readiness of the payload.
« Last Edit: 07/14/2022 11:11 pm by zubenelgenubi »

Online zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 8811
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 5298
  • Likes Given: 47693
The latest aerial images from NASASpacefligt indicate that there is nothing at SLC-46.
Has there been any pad activity after the June 12 launch failure?  (Other than removal of equipment to arrive at the clean pad seen in the posted image.)

However Astra can probably set up in 24 hours by staging from somewhere close by in Florida. IIRC everything for the launch was in 3 or 4 semi trailers.
True.  The semi trailers could be on-base.

The issue that might hold up the launch set up process might be the readiness of the payload.
Possible, but we have seen no indication of such.  Otherwise, the 6 satellites appear to have been ready for the three quick succession launches.

Astra is still determining why the previous launch failed?  Or now remediating the issues found?  We don't know when in the return to flight process that they stand.
« Last Edit: 07/21/2022 12:55 am by zubenelgenubi »
Support your local planetarium! (COVID-panic and forward: Now more than ever.)
My current avatar is saying "i wants to go uppies!"

Online zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 8811
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 5298
  • Likes Given: 47693
https://mobile.twitter.com/jeff_foust/status/1554464843993956352
Quote from: Jeff Foust
At this morning’s Earth Science Advisory Cmte meeting, NASA’s Karen St. Germain says the agency is working on a plan for launching the four remaining TROPICS cubesats after the first two were lost on an Astra launch in June. “Still excited” about science 4 TROPICS sats can do. [August 2]
Rocket return-to-flight?
Or something else?
Support your local planetarium! (COVID-panic and forward: Now more than ever.)
My current avatar is saying "i wants to go uppies!"

Offline TrevorMonty

https://mobile.twitter.com/jeff_foust/status/1554464843993956352
Quote from: Jeff Foust
At this morning’s Earth Science Advisory Cmte meeting, NASA’s Karen St. Germain says the agency is working on a plan for launching the four remaining TROPICS cubesats after the first two were lost on an Astra launch in June. “Still excited” about science 4 TROPICS sats can do. [August 2]
Rocket return-to-flight?
Or something else?
Losing 2 is not unexpected on new LV but can they afford to lose anymore. Maybe case of using more reliable LV for remaining 4.
« Last Edit: 08/04/2022 07:30 am by zubenelgenubi »

Offline ZachS09

  • Space Savant
  • Senior Member
  • *****
  • Posts: 8052
  • Roanoke, TX
  • Liked: 2012
  • Likes Given: 1862
https://mobile.twitter.com/jeff_foust/status/1554464843993956352
Quote from: Jeff Foust
At this morning’s Earth Science Advisory Cmte meeting, NASA’s Karen St. Germain says the agency is working on a plan for launching the four remaining TROPICS cubesats after the first two were lost on an Astra launch in June. “Still excited” about science 4 TROPICS sats can do. [August 2]
Rocket return-to-flight?
Or something else?
Losing 2 is not unexpected on new LV but can they afford to lose anymore. Maybe case of using more reliable LV for remaining 4.


Electron, maybe? Or LauncherOne?
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Celeste_El

  • Member
  • Posts: 26
  • MA
  • Liked: 48
  • Likes Given: 1
Kemp just confirmed in their Q2 call that Tropics is being moved to Launch System 2.0 (Rocket 4) and there will no additional commercial launches this year.

Online zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 8811
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 5298
  • Likes Given: 47693
Cross-posts

No more Rocket 3.0 launches!

Astra Earnings Statement - https://investor.astra.com/news-releases/news-release-details/astra-announces-second-quarter-2022-financial-results
[August 4]
Quote from: Astra
Astra announces that after two of its four Rocket 3.3 flights were successful, the Company will transition to the next version of its launch system and is working with customers to re-manifest all payloads onto the new launch system, designed for higher capacity, reliability, and production rate.

Wow
Quote from: Michael Sheetz tweet
Astra's presentation for the Q2 conference call says that the TROPICS-1 mission failure investigation is still ongoing. $ASTR [August 4]

Quote from: Michael Sheetz tweet
$ASTR CEO Chris Kemp: "We will not have any additional flights in 2022." [August 4]

Quote from: Eric Berger tweet
Astra CEO Chris Kemp said it's not certain that the company will resume commercial launches in 2023. It will depend on how development and testing goes with the next generation launch system [Rocket 4.0]. May be later. [August 4]
« Last Edit: 08/04/2022 10:40 pm by zubenelgenubi »
Support your local planetarium! (COVID-panic and forward: Now more than ever.)
My current avatar is saying "i wants to go uppies!"

Offline Zed_Noir

  • Senior Member
  • *****
  • Posts: 4424
  • Canada
  • Liked: 1350
  • Likes Given: 1152
https://mobile.twitter.com/jeff_foust/status/1554464843993956352
Quote from: Jeff Foust
At this morning’s Earth Science Advisory Cmte meeting, NASA’s Karen St. Germain says the agency is working on a plan for launching the four remaining TROPICS cubesats after the first two were lost on an Astra launch in June. “Still excited” about science 4 TROPICS sats can do. [August 2]
Rocket return-to-flight?
Or something else?
Losing 2 is not unexpected on new LV but can they afford to lose anymore. Maybe case of using more reliable LV for remaining 4.


Electron, maybe? Or LauncherOne?
Just put the remaining 4 TROPICS cubesats on a Falcon 9 along with whatever rideshare that can be mustered to go along. Losing one more TROPICS will drastically reduce the science that can done, since nominally there should be a minimum of 4 TROPICS spacecrafts gathering data. NASA has let Astra Space rolled the dice, who didn't make the saving throw. :(

Offline ZachS09

  • Space Savant
  • Senior Member
  • *****
  • Posts: 8052
  • Roanoke, TX
  • Liked: 2012
  • Likes Given: 1862
https://mobile.twitter.com/jeff_foust/status/1554464843993956352
Quote from: Jeff Foust
At this morning’s Earth Science Advisory Cmte meeting, NASA’s Karen St. Germain says the agency is working on a plan for launching the four remaining TROPICS cubesats after the first two were lost on an Astra launch in June. “Still excited” about science 4 TROPICS sats can do. [August 2]
Rocket return-to-flight?
Or something else?
Losing 2 is not unexpected on new LV but can they afford to lose anymore. Maybe case of using more reliable LV for remaining 4.


Electron, maybe? Or LauncherOne?
Just put the remaining 4 TROPICS cubesats on a Falcon 9 along with whatever rideshare that can be mustered to go along. Losing one more TROPICS will drastically reduce the science that can done, since nominally there should be a minimum of 4 TROPICS spacecrafts gathering data. NASA has let Astra Space rolled the dice, who didn't make the saving throw. :(

I mentioned that possibility a while ago, and someone said that since TROPICS is not going to a sun-synchronous orbit (TROPICS operates in a 30-degree orbit), a Transporter rideshare is unlikely.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Online niwax

  • Full Member
  • ****
  • Posts: 1352
  • Germany
    • SpaceX Booster List
  • Liked: 1900
  • Likes Given: 159
https://mobile.twitter.com/jeff_foust/status/1554464843993956352
Quote from: Jeff Foust
At this morning’s Earth Science Advisory Cmte meeting, NASA’s Karen St. Germain says the agency is working on a plan for launching the four remaining TROPICS cubesats after the first two were lost on an Astra launch in June. “Still excited” about science 4 TROPICS sats can do. [August 2]
Rocket return-to-flight?
Or something else?
Losing 2 is not unexpected on new LV but can they afford to lose anymore. Maybe case of using more reliable LV for remaining 4.


Electron, maybe? Or LauncherOne?
Just put the remaining 4 TROPICS cubesats on a Falcon 9 along with whatever rideshare that can be mustered to go along. Losing one more TROPICS will drastically reduce the science that can done, since nominally there should be a minimum of 4 TROPICS spacecrafts gathering data. NASA has let Astra Space rolled the dice, who didn't make the saving throw. :(

I mentioned that possibility a while ago, and someone said that since TROPICS is not going to a sun-synchronous orbit (TROPICS operates in a 30-degree orbit), a Transporter rideshare is unlikely.

It really depends on what they are more likely to budge on, orbit or money. They got the three Astra launches at $2.5 million each, that is not going to happen anywhere else. The other bidders were Starship (est. $5 million/launch) and Electron (est. $7.5 million/launch). If they don't want to drastically increase their budget, almost doubling it for Electron, another option would be to go to ~52° on a Starlink launch or ride along to ISS, but none of those options are great.
Which booster has the most soot? SpaceX booster launch history! (discussion)

Offline ZachS09

  • Space Savant
  • Senior Member
  • *****
  • Posts: 8052
  • Roanoke, TX
  • Liked: 2012
  • Likes Given: 1862
What are the benefits and disadvantages of TROPICS operating in a 53-degree orbit rather than the original 30-degree orbit?
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Jim

  • Night Gator
  • Senior Member
  • *****
  • Posts: 36187
  • Cape Canaveral Spaceport
  • Liked: 18744
  • Likes Given: 400
What are the benefits and disadvantages of TROPICS operating in a 53-degree orbit rather than the original 30-degree orbit?

Less coverage of the tropics

Offline ZachS09

  • Space Savant
  • Senior Member
  • *****
  • Posts: 8052
  • Roanoke, TX
  • Liked: 2012
  • Likes Given: 1862
What are the benefits and disadvantages of TROPICS operating in a 53-degree orbit rather than the original 30-degree orbit?

Less coverage of the tropics.

That's my point. So, I can't fathom a SpaceX rideshare unless there's a major payload also going to a 30-degree orbit.
« Last Edit: 08/06/2022 02:03 pm by ZachS09 »
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Bananas_on_Mars

  • Full Member
  • ****
  • Posts: 535
  • Liked: 441
  • Likes Given: 114
They could rideshare with most GTO launches that use a parking orbit (i think all Falcon 9 missions didn’t do direct insertion so far). Would need a transfer vehicle though, or a light GEO satellite. But minimum inclination out of the cape is already 28.5 degrees.

Offline Steven Pietrobon

  • Member
  • Senior Member
  • *****
  • Posts: 32941
  • Adelaide, Australia
    • Steven Pietrobon's Space Archive
  • Liked: 21787
  • Likes Given: 3948
Does this tweet mean that the mission is not cancelled and that it just moves to Rocket 4.0?

"NASA is an unreal customer. Told Astra it's willing to wait for "launch system 2.0" for the Tropics mission."

https://twitter.com/sciguyspace/status/1555293237652475904
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online trimeta

  • Full Member
  • ****
  • Posts: 1191
  • Kansas City, MO
  • Liked: 1628
  • Likes Given: 49
Does this tweet mean that the mission is not cancelled and that it just moves to Rocket 4.0?

"NASA is an unreal customer. Told Astra it's willing to wait for "launch system 2.0" for the Tropics mission."

Is it even the same mission at that point? I figure that once (if) that's announced, a new thread would be created (possibly linking to this one).

Offline TrevorMonty

Does this tweet mean that the mission is not cancelled and that it just moves to Rocket 4.0?

"NASA is an unreal customer. Told Astra it's willing to wait for "launch system 2.0" for the Tropics mission."

https://twitter.com/sciguyspace/status/1555293237652475904
Assume at same price as Rocket 3.0 in which case Astra will be losing money.
« Last Edit: 08/08/2022 09:49 pm by zubenelgenubi »

Offline lrk

  • Full Member
  • ****
  • Posts: 721
  • Minnesota
  • Liked: 534
  • Likes Given: 1034
Is it possible that the remaining satellites could fly on a single launch of Rocket 4.0?

Offline AmigaClone

Is it possible that the remaining satellites could fly on a single launch of Rocket 4.0?

Possible, yes. I can see NASA desiring to see a couple of consecutive successful flights before launching the remaining four Tropics satellites.

Granted, that might depend on how soon Astra can develop their Rocket 4.0 and get it operational.

Offline TrevorMonty

Is it possible that the remaining satellites could fly on a single launch of Rocket 4.0?
Depends if they are all going into same orbit.
« Last Edit: 08/08/2022 09:50 pm by zubenelgenubi »

Offline FutureSpaceTourist

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 33258
  • UK
    • Plan 28
  • Liked: 58558
  • Likes Given: 26197
https://twitter.com/jeff_foust/status/1556678106030567425

Quote
At a NASA town hall at the #Smallsat conference this morning, the agency says it’s “still looking for a ride” for the four remaining TROPICS cubesats that were to launch on Astra’s Rocket 3.3. Astra said last week it’s in discussions with NASA, but Rocket 4 would be a poor fit.

Offline jstrotha0975

  • Full Member
  • ****
  • Posts: 446
  • United States
  • Liked: 268
  • Likes Given: 2115
What is the mass of the TROPICS satellites?

Online Bean Kenobi

  • Member
  • Full Member
  • ****
  • Posts: 468
  • Liked: 280
  • Likes Given: 168
What is the mass of the TROPICS satellites?

3U cubesat, 5,3 kg.

Offline su27k

  • Senior Member
  • *****
  • Posts: 6266
  • Liked: 8864
  • Likes Given: 870
NASA looking for new launch of remaining TROPICS cubesats

Quote from: SpaceNews
Agency sources said Astra’s announcement that the company was discontinuing the Rocket 3.3 took them by surprise. Switching vehicles poses cost and schedule challenges that NASA is still studying.

However, even before the announcement, NASA was looking into alternative options while awaiting the outcome of the investigation into the June launch failure.

Offline Sam Ho

  • Full Member
  • ****
  • Posts: 751
  • Liked: 460
  • Likes Given: 71
Cross-post: the remaining TROPICS launch(es) will be competed under VADR:
https://www.nasa.gov/feature/nasa-maintains-contractual-relationship-with-astra-presses-forward-with-tropics-mission

Quote
Sep 22, 2022

NASA Maintains Contractual Relationship with Astra, Presses Forward with TROPICS Mission

Recognizing the urgent science needs, NASA is adjusting its launch services plan to complete the timely launch of a CubeSat constellation designed to improve understanding of tropical cyclones.

The agency’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission launch service now will be competed under the agency’s Venture-Class Acquisition of Dedicated and Rideshare (VADR) IDIQ contract targeting the 2023 hurricane season.

NASA and Astra also have agreed to modify its existing launch services contract, originally planned for the agency’s TROPICS constellation, for the launch of comparable scientific payloads on Astra’s Rocket 4.0 in the future.

NASA selected commercial partner Astra in 2021 to provide launch services for TROPICS across three launches using the company’s Rocket 3.3 launch vehicle. On June 12, 2022, after a nominal first-stage flight, the upper stage of Astra’s Rocket 3.3 shut down early and failed to deliver the first two TROPICS CubeSats to orbit. NASA currently is participating in the launch investigation, led by Astra and the Federal Aviation Administration.

Following the first TROPICS launch attempt, Astra and NASA engaged in discussions regarding the remaining launch attempts. Astra then notified NASA of its intent to discontinue its Rocket 3.3 and indicated the company would potentially not resume launches prior to the 2023 Atlantic hurricane season. The VADR contract allows the 13 companies selected this year to compete for the rebid of the TROPICS launch services, giving the agency and external stakeholders the ability to use TROPICS data sooner.

TROPICS is an Earth venture mission – science-driven, competitively selected, low-cost missions that provide opportunity for investment in innovative Earth science to enhance our capability to better understand the current state of the Earth system and to enable continual improvement in the prediction of future changes. NASA is committed to helping grow the U.S. commercial launch market while enabling the agency’s science missions. The VADR contract allows NASA to nurture the emerging commercial market by awarding launch providers more risk-tolerant payloads such as TROPICS.

Last Updated: Sep 28, 2022
Editor: James Cawley

Offline TrevorMonty

Could RL launch remaining 4 satellites on single Electron. While satellites only mass a few kgs each they need to be deployed to 2 separate orbits. Don't know orbits in particular  or DV between them but probably to much for typical LEO Photon kick stage. Larger Capstone Photon on other hand has about 3km/s of DV available should be enough to handle change of orbits so all 4 satellites  can be deployed on single launch.

Would be more expensive launch but lot cheaper than 2 separate ones.

Offline ZachS09

  • Space Savant
  • Senior Member
  • *****
  • Posts: 8052
  • Roanoke, TX
  • Liked: 2012
  • Likes Given: 1862
Could RL launch remaining 4 satellites on single Electron. While satellites only mass a few kgs each they need to be deployed to 2 separate orbits. Don't know orbits in particular  or DV between them but probably to much for typical LEO Photon kick stage. Larger Capstone Photon on other hand has about 3km/s of DV available should be enough to handle change of orbits so all 4 satellites  can be deployed on single launch.

Would be more expensive launch but lot cheaper than 2 separate ones.

Seems logical in my book. I support Electron doing the job.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline edzieba

  • Virtual Realist
  • Senior Member
  • *****
  • Posts: 4900
  • United Kingdom
  • Liked: 7124
  • Likes Given: 36
IIRC Rocket Lab's bid for TROPICS was an Electron for each pair of satellites.

Online trimeta

  • Full Member
  • ****
  • Posts: 1191
  • Kansas City, MO
  • Liked: 1628
  • Likes Given: 49
IIRC Rocket Lab's bid for TROPICS was an Electron for each pair of satellites.

Sure, but it's possible that Lunar Photon has enough delta-v to plane change once but not twice. So they can put four on one launch, but not six.

That said, unless someone wants to offer a >50% discount to launch on a brand new vehicle (and yes, I'm including SpaceX's bid to use Starship in this category), Rocket Lab can bid their sticker price for two launches and still win. So it's solely a matter of whether they want to show off Lunar Photon's capabilities. Which they may want to do, I'm not trying to dismiss this, but it won't be to lower their price and win the bid.

Online AstroWare

  • Full Member
  • **
  • Posts: 285
  • Arizona
  • Liked: 213
  • Likes Given: 0
IIRC Rocket Lab's bid for TROPICS was an Electron for each pair of satellites.

Sure, but it's possible that Lunar Photon has enough delta-v to plane change once but not twice. So they can put four on one launch, but not six.

That said, unless someone wants to offer a >50% discount to launch on a brand new vehicle (and yes, I'm including SpaceX's bid to use Starship in this category), Rocket Lab can bid their sticker price for two launches and still win. So it's solely a matter of whether they want to show off Lunar Photon's capabilities. Which they may want to do, I'm not trying to dismiss this, but it won't be to lower their price and win the bid.

Are you sure they are planning to build replacements for the lost sats? If not, then this conversation is really only about 4 birds, not 6.

My understanding was they built 6, but the constellation was viable with 4. Right after the failure, they seemed to be okay launching just the next 4 without building replacements.

Maybe with the delay from changing providers, the other 2 are replaced. But I haven't seen anything definitive to that end.



---

Also, I think the <inclination> change is only once. And that is the costly dV maneuver.  From the launch site inclination TO the deployment inclination (30 Deg). Then two sats each in (originally three) different orbital planes.

*Edited above*

I claim no expertise in orbital mechanics, but I think that changing planes can be done slowly by drifting. Now what means either the satellite has a long enough orbital life and propulsion to do the maneuver, or your launcher has a high endurance upper stage to drift then deploy.

The photon of either variant should have the endurance for a drift/deploy mission. (I'm not speaking to the dV required)

The whole 4 sat mission would look like:
Launch (parking orbit)
Inclination Reduction maneuver
Deploy (2)
Maneuver to drift orbit
*Drift*
Maneuver to deployment orbit
Deploy (2)
« Last Edit: 10/19/2022 03:11 pm by AstroWare »

Online AstroWare

  • Full Member
  • **
  • Posts: 285
  • Arizona
  • Liked: 213
  • Likes Given: 0
Fun fact I didn't know until today: There are actually (7) Tropics satellites. A pathfinder (Tropics-01) was launched on Transporter-2 from the Stage 2 aft deployer.

Online trimeta

  • Full Member
  • ****
  • Posts: 1191
  • Kansas City, MO
  • Liked: 1628
  • Likes Given: 49
IIRC Rocket Lab's bid for TROPICS was an Electron for each pair of satellites.

Sure, but it's possible that Lunar Photon has enough delta-v to plane change once but not twice. So they can put four on one launch, but not six.

That said, unless someone wants to offer a >50% discount to launch on a brand new vehicle (and yes, I'm including SpaceX's bid to use Starship in this category), Rocket Lab can bid their sticker price for two launches and still win. So it's solely a matter of whether they want to show off Lunar Photon's capabilities. Which they may want to do, I'm not trying to dismiss this, but it won't be to lower their price and win the bid.

Are you sure they are planning to build replacements for the lost sats? If not, then this conversation is really only about 4 birds, not 6.

My understanding was they built 6, but the constellation was viable with 4. Right after the failure, they seemed to be okay launching just the next 4 without building replacements.

Maybe with the delay from changing providers, the other 2 are replaced. But I haven't seen anything definitive to that end.
Where did I suggest that NASA is building another two satellites, and will again be soliciting for six, rather than four payloads? In fact, I was trying to contrast the original bid for six (where perhaps Rocket Lab would have been unable to launch three separate clusters on a single rocket, hence their original bid edzieba mentioned) with a hypothetical solicitation to carry four satellites (where Rocket Lab could do it with a single launch).

Offline TrevorMonty

NASA must of allowed for at least one launch failure  as new LV like Rocket 3.0 was always high risk.

NASA iisn't building replacements, only 4 to launch. They want them deployed soon and reliably so I doubt risking them on another new LV.


Online AstroWare

  • Full Member
  • **
  • Posts: 285
  • Arizona
  • Liked: 213
  • Likes Given: 0
Where did I suggest that NASA is building another two satellites, and will again be soliciting for six, rather than four payloads?

Sure, but it's possible that Lunar Photon has enough delta-v to plane change once but not twice. So they can put four on one launch, but not six.

I read your quote above in the present tense. "So they can put four on one launch, but [can not put] six".

But what you meant was "So they can put four on one launch, but [could not have put] six".

But I understand your clarification, and it sounds like we are in violent agreement :)
« Last Edit: 10/19/2022 08:46 pm by AstroWare »

Offline FutureSpaceTourist

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 33258
  • UK
    • Plan 28
  • Liked: 58558
  • Likes Given: 26197
NASA has announced the two remaining TROPICS cubesat missions will be launched by Rocket Lab on Electron, NET 1 May 2023:

https://forum.nasaspaceflight.com/index.php?topic=57739.0

[Edit to correct 2 cubesat missions, not 2 cubesats]
« Last Edit: 11/23/2022 11:15 pm by FutureSpaceTourist »

Online Bean Kenobi

  • Member
  • Full Member
  • ****
  • Posts: 468
  • Liked: 280
  • Likes Given: 168
NASA has announced the two remaining TROPICS cubesats will be launched by Rocket Lab on Electron, NET 1 May 2023:

https://forum.nasaspaceflight.com/index.php?topic=57739.0

4 remaining cubesats, on 2 Electron launches  ;)

Tags:
 

Advertisement NovaTech
Advertisement SkyTale Software GmbH
Advertisement Northrop Grumman
Advertisement
Advertisement Brady Kenniston
Advertisement NextSpaceflight
Advertisement Nathan Barker Photography
0