Support the Arctic Sea Ice Forum and Blog

Author Topic: SpaceX  (Read 3070 times)

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #50 on: April 22, 2019, 02:28:39 PM »
SpaceX preps for Cargo Dragon, Falcon Heavy launches despite setbacks
Quote
Despite suffering the loss of the first Falcon Heavy Block 5 center core and a catastrophic failure of the first flight-proven Crew Dragon spacecraft in nearly the same week, SpaceX’s core operations continue as usual to prepare for multiple launches in the coming months.

The echoes of the past week’s failures and ‘anomalies’ will undoubtedly ring for months to come but SpaceX now finds itself in a unique situation. Despite the imminent start of a major failure investigation, it appears unlikely – at least for the time being – that it will impact the majority of Falcon 9 and Falcon Heavy launches planned for the rest of 2019. Currently on the Q2 2019 manifest are Cargo Dragon’s 17th operational mission (CRS-17), the first operational Starlink launch, Spacecom’s Amos-17 satellite, the Canadian Radarsat Constellation Mission (RCM), and Falcon Heavy’s third launch (STP-2). ...
https://www.teslarati.com/spacex-upcoming-launches-spring-2019/
People who say it cannot be done should not interrupt those who are doing it.

Lurk

  • ASIF Citizen
  • Posts: 437
    • View Profile
  • Liked: 62
  • Likes Given: 0
Re: SpaceX
« Reply #51 on: April 22, 2019, 07:48:03 PM »
Awfully convenient for them that crew dragon unit didn't blow up when docking to and from the space station. Now there's a few grateful happy campers for sure.
While you're here, please take this opportunity to visit our Sponsor https://www.tesla.com and play an active role in saving the planet. Join the Tesla Family today!

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #52 on: April 27, 2019, 01:42:37 AM »
Quote
Michael Baylor (@nextspaceflight)
4/26/19, 7:03 PM
#SpaceX has been granted FCC approval to fly 1,500 #Starlink satellites at an altitude of 550 kilometers.

Full statement:
Quote
#2647 by Michael Baylor on 26 Apr, 2019 23:00

   SpaceX Statement



Today, the Federal Communications Commission (FCC) approved SpaceX’s request to fly more than 1,500 of its Starlink satellites at an altitude of 550 kilometers. Additional information on the approval can be found here, and the following statement can be attributed to Gwynne Shotwell, President and Chief Operating Officer at SpaceX:
 


“This approval underscores the FCC’s confidence in SpaceX’s plans to deploy its next-generation satellite constellation and connect people around the world with reliable and affordable broadband service. Starlink production is well underway, and the first group of satellites have already arrived at the launch site for processing.”
 


SpaceX is targeting no earlier than May for launch of a Starlink mission.
 


Last year, SpaceX became the first U.S.-based company to be licensed by the FCC to operate a NGSO constellation of more than 11,000 satellites.
 


Earlier this year, SpaceX submitted an application to operate 1 million user terminals as well as its first six gateways to provide the necessary communications links back from the satellites to the global Internet.

SpaceX intends to install sufficient gateway sites in the U.S. and around the world to ensure that the Starlink satellites have a visible gateway earth station with which they can communicate from all parts of their orbits.
https://forum.nasaspaceflight.com/index.php?topic=36552.msg1940441#msg1940441
https://twitter.com/nextspaceflight/status/1121912653759303681
People who say it cannot be done should not interrupt those who are doing it.

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #53 on: April 27, 2019, 02:07:16 AM »
More here about the superior safety aspects of the satellites’ design:

SpaceX proves higher than necessary safety of Starlink constellation
https://www.nasaspaceflight.com/2019/03/spacex-higher-necessary-safety-starlink-constellation/#more-60756
People who say it cannot be done should not interrupt those who are doing it.

vox_mundi

  • ASIF Middle Class
  • Posts: 640
    • View Profile
  • Liked: 141
  • Likes Given: 60
Re: SpaceX
« Reply #54 on: May 02, 2019, 02:57:01 PM »
SpaceX Capsule Was Destroyed in 'Anomaly'
https://phys.org/news/2019-05-spacex-capsule-anomaly-lawmaker.html

A space capsule suspected to have exploded last month in an incident characterized by manufacturer SpaceX as an "anomaly" was in fact completely destroyed, a US Senator confirmed Wednesday.

"The most recent SpaceX anomaly caused the complete loss of the (crew) capsule," Senator Richard Shelby, chairman of a Senate committee that manages NASA's budget, said during a hearing.
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

crandles

  • ASIF Upper Class
  • Posts: 2188
    • View Profile
  • Liked: 34
  • Likes Given: 32
Re: SpaceX
« Reply #55 on: May 04, 2019, 07:40:24 PM »
Perhaps best video footage so far of landing onto droneship from CRS-17 mission.

(The 4th was with them today  ;) )

https://www.youtube.com/watch?v=AQFhX5TvP0M&feature=youtu.be

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #56 on: May 05, 2019, 04:18:32 PM »
The 17th SpaceX mission to the International Space Station, and the 39th booster landing.
(Watch a replay of the launch at https://www.spacex.com )

SpaceX launches space station resupply mission, lands rocket on drone ship
https://spaceflightnow.com/2019/05/04/spacex-launches-space-station-resupply-mission-lands-rocket-on-drone-ship/

The payload includes an instrument to measure CO2 more precisely:
NASA  instrument heads to space station to map CO2
Quote
The space station instrument brings a new trick to the OCO observations - a swivelling mirror system that allows the spectrometer system to scan a much wider swath of the Earth's surface than would ordinarily be the case.
This "snapshot" mode means CO2 maps can be built up in a single pass over a target of special interest, such as a megacity - a task that will take OCO-2 several days.
"The snapshot mode allows us to grab snippets of data over an area of about 80km by 80km in two minutes. Right now we think we may spend about a quarter of our time making these mini maps, up to 100 a day," Dr Eldering said.
https://www.bbc.com/news/science-environment-48150645
People who say it cannot be done should not interrupt those who are doing it.

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #57 on: May 08, 2019, 01:18:03 AM »
SpaceX to launch “dozens” of first-generation Starlink internet satellites on May 15; several other Starlink launches expected this year.
Quote
WASHINGTON — SpaceX’s first launch to carry a large number of Starlink broadband satellites is scheduled for May 15, according to a company executive.

Gwynne Shotwell, SpaceX’s president and chief operating officer, said the launch will carry “dozens of satellites,” adding more prototypes to the two currently in low Earth orbit.

“This next batch of satellites will really be a demonstration set for us to see the deployment scheme and start putting our network together,” she said at the Satellite 2019 conference here. “We start launching satellites for actual service later this year.”

Shotwell said SpaceX anticipates launching two to six more times for its Starlink broadband constellation in addition to the May 15 launch. How many Starlink launches occur this year depend on the results of this first batch, she said.

SpaceX is planning a constellation that could number close to 12,000 satellites, according to filings with the U.S. Federal Communications Commission. The company said in 2017 that it would need 800 satellites in orbit for commercial service — a target estimated for the 2020 to 2021 timeframe. ...
https://spacenews.com/spacex-to-launch-dozens-of-starlink-satellites-may-15-more-starlink-launches-to-follow/

Reddit discussion (including low earth orbit and signal latency) here:
https://www.reddit.com/r/spacex/comments/blv3mk/jeff_foust_shotwell_starlink_launch_now_scheduled/

——
SpaceX hits new Falcon 9 reusability milestone, retracts all four landing legs
Quote
What leg retraction does... is shave a significant amount of time off of the process of booster recovery and post-recovery processing. Instead of the normal process of totally dismantling and removing the legs piece by piece, stowing Falcon 9’s legs saves not only the time it takes to remove them but also the time it then takes to reinstall said legs for the next launch. At a minimum, this could save 12-24 hours of dedicated work, up to as much as several days according to CEO Elon Musk. Taken to the extreme, it’s likely that SpaceX’s ultimate goal is to lift a booster off the drone ship, retract its landing legs mid-air (or close), flip the booster horizontal, and lower it onto a transporter in one fluid movement.

If SpaceX can arrive at something approximating that in the near future, the company will be well on its way accomplish Musk’s goal of launching the same Falcon 9 booster twice in ~24 hours. Even further down the road, if or when SpaceX manages to optimize the reusability of its Falcon 9 boosters to the extent that almost zero refurbishment or in-depth inspection is needed between launches, minimizing the amount of human effort that goes into something as basic as preparing landing legs may actually have a significant impact on launch costs. For the time being, we get to enjoy the new and unusual spectacle of a giant reusable booster carefully stowing its landing legs for another launch attempt.
https://www.teslarati.com/spacex-starts-falcon-9-landing-leg-retraction/
Photos and video at the link.
People who say it cannot be done should not interrupt those who are doing it.

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #58 on: May 12, 2019, 01:38:01 PM »
First Starlink launch within days! 

Elon Musk (@elonmusk) 5/11/19, 9:43 PM
First 60 @SpaceX Starlink satellites loaded into Falcon fairing. Tight fit.
https://twitter.com/elonmusk/status/1127388838362378241
[Images below, with the Starman/Roadster payload for comparison.]
- If static fire [OK] on Mon, [launch] on Tues
- These are production design, unlike our earlier Tintin demo sats
- Much will likely go wrong on 1st mission. Also, 6 more launches of 60 sats needed for minor coverage, 12 for moderate.
- More details on day of launch, currently tracking to Wednesday
< Holy crap that's a lot of satellites, it almost looks flat-packed! I wonder what the dispenser mechanism for that looks like?
- It is flat-packed. No dispenser.
People who say it cannot be done should not interrupt those who are doing it.

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #59 on: May 12, 2019, 01:59:17 PM »
SpaceX CEO Elon Musk reveals radical Starlink redesign for 60-satellite launch
Quote
...the very fact that the Starlink v0.9 payload can scarcely be parsed into recognizable satellites is thrilling. Aside from the rise of smallsats and cubesats, satellite design and engineering has been relatively stagnant for decades, particularly with respect to form factors and structural layouts. Most modern satellites are simply square-ish boxes with electronics inside and payloads bolted on the outside.
...
Even relative to fairly innovative constellations like the SpaceX-launched Iridium NEXT and OneWeb look downright mundane when examined alongside SpaceX’s inaugural Borg-cube-esque payload. SpaceX’s Starlink layout looks like nothing seen before. At the same time, it appears that the bizarre, new approach has likely maximized the density and stacking efficiency of dozens of satellites to an unprecedented degree.
...
According to Musk, SpaceX has actually entirely gotten rid of a satellite-dispenser middle-man, instead relying on the structure of the satellites themselves to act as their own launch adapters and deployment mechanisms. This has been done in the past on a far smaller scale – typically with 2-3 several-ton satellites – but has never been attempted at the scale SpaceX is just days away from launching.
https://www.teslarati.com/spacex-starlink-satellites-tease-revolutionary-design/
People who say it cannot be done should not interrupt those who are doing it.

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #60 on: May 15, 2019, 01:47:49 PM »
SpaceX (@SpaceX) 5/15/19, 12:53 AM
Weather is 80% favorable for [tonight’s!] Falcon 9 launch of Starlink. Launch window opens at 10:30 p.m. EDT [0230 GMT Thursday]→ spacex.com/webcast
https://twitter.com/spacex/status/1128523774888833024
- The booster supporting this mission previously flew in support of the Telstar 18 VANTAGE and Iridium-8 missions
(Photos at the link and SpaceX’s reply.)



Elon Musk (@elonmusk) 5/14/19, 7:53 PM
SpaceX is doing simultaneous competing builds of Starship in Boca Chica Texas & Cape Canaveral Florida
https://twitter.com/elonmusk/status/1128448308970541056
Everyday Astronaut: So the teams don’t know what the other is doing? Then learn the best lessons from each team? Then the losing team gets voted off the island?
EM: The opposite. Any insights gained by one team must be shared with the other, but other team not required to use them.
EA: When will we start seeing those crazy flap / landing leg / fins be installed? It’s gotta be coming up soon down at Boca Chica!! Those are going to be an amazing piece of kit.
EM: Probably start installing end of next month

(These are in addition to the “Hopper” test module.)
People who say it cannot be done should not interrupt those who are doing it.

Sigmetnow

  • ASIF Emperor
  • Posts: 14048
    • View Profile
  • Liked: 195
  • Likes Given: 116
Re: SpaceX
« Reply #61 on: May 16, 2019, 08:24:45 PM »
Upper-level wind shear has unfortunately scrubbed SpaceX’s first dedicated Starlink launch attempt, pushing Falcon 9 B1049’s third liftoff to no earlier than 10:30 pm EDT (02:30 UTC), May 16th.

Article linked below covers details revealed in a pre-launch conference call last night.

- These first 60 satellites alone will have a combined bandwidth of 1 terabit per second (125 GB/s), averaging around 17 Gbps per satellite.
- Combined, the solar arrays on the 60 Starlink spacecraft will produce up to 50% more power than the International Space Station’s football field-sized panels. This translates to ~180 kW, with each spacecraft thus producing around 3 kW total with an unusual single-panel array.

SpaceX has all the Starlink funding needed for an “operational constellation”
https://www.teslarati.com/spacex-secures-starlink-funding-launch-scrubbed/
People who say it cannot be done should not interrupt those who are doing it.