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SpaceX rockets and launches

Live NROL launch coverage is up and running. Launch expected at 1215BST from LC39A. The betting is currently on a SAR imaging satellite to a high inclination (50-60 degree) orbit. Coverage of the upper stage will end at payload fairing separation but they should cover the return to landing zone 1 of the the first stage.
 
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Nice video of the return of the first stage…


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spysat apparently. A blog reported it as 'shrouded in secrecy'. So shrouded it was broadcast live and you are reporting on it. Clickbait wankers
 
spysat apparently. A blog reported it as 'shrouded in secrecy'. So shrouded it was broadcast live and you are reporting on it. Clickbait wankers
Various factors (payload contractor bus choice, range safety constraints, launch vehicle performance and ascent profile, launch time and post-scrub recycling timings, mission patch) all hint at a high inclination, low Earth orbit synthetic aperture radar imaging satellite (and tend to rule out other roles eg elint/sigint/comsat for GEO/MEO/HEO, or LEO visual imagery).
 
Falcon-9 launch tonight at 0021BST (49 minute launch window) to carry the Inmarsat 5 F4 communications satellite to supersynchronous orbit (augmenting the Global Xpress broadband network). This will be at the performance limit of the vehicle due to payload mass and targeted delivery orbit so no recovery of the first stage (it will plunge into the Atlantic downrange).
 
The F9 NROL 76 spysat payload (now officially designated USA 276), launched 1st May, has been confirmed as being in a 400km high, 50 degree orbit, so most likely a radar imaging satellite.

Next SpaceX launch is due 1st June to carry CRS12 to the ISS. (e2a) The current launch time (around 2256BST) will probably facilitate being able to see the second stage and Dragon over the UK, some 15 minutes or so after launch (though a day or two delay in launch would improve the chances until it is lost in daylight glare).
 
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SpaceX Technician Says Concerns About Tests Got Him Fired


  • Ex-employee says management told workers to ignore protocols

  • Company tells jury he was terminated for poor job performance

Bloomberg.com said:
A former Space Exploration Technologies Corp. technician was fired for complaining to management that rocket-building test protocols weren’t followed and results were falsified, jeopardizing the safety of eventual manned trips into orbit, his lawyer told a jury.

Jason Blasdell claims he took his concerns as high as SpaceX founder and Chief Executive Officer Elon Musk in the months before he was terminated in 2014, purportedly for being “disruptive."

A Los Angeles state court jury will be asked to decide whether Blasdell had good reason to believe testing documents were falsified and whether his firing was unjustified.


“He went up the chain of command as he had learned in the Marines was the proper procedure," Blasdell’s lawyer, Carney Shegerian, told jurors in his opening statement Tuesday. “He had nothing personal to benefit from this other than to do the right thing."

SpaceX made misrepresentations to the federal government, cut corners in areas where safety was concerned and labeled Blasdell “insubordinate" for pressing his concerns, Shegerian said.

Scientific Decisions
California Superior Court Judge William Fahey has ruled that the jury won’t be second-guessing the scientific decisions of SpaceX’s engineers or the business judgment of its managers. The trial is expected to take two weeks.

“Jason Blasdell is not a whistle-blower and this is not a whistle-blower case," SpaceX’s lawyer, Lynne Hermle, said in her opening statement.

He never observed or conducted any unlawful testing of rocket parts, never complained about unlawful testing, and never brought any concerns about unlawful testing to federal authorities, Hermle told jurors.


Blasdell was fired because his job performance had become unacceptable and his fellow employees had become worried about their safety because of him, according to the lawyer.

NASA Missions
SpaceX plans to fly 20 to 24 missions in 2017 for customers that include the National Aeronautics and Space Administration and commercial satellite operators. The company has contracts with NASA valued at $4.2 billion to resupply the International Space Station using an unmanned Dragon spacecraft and to ferry astronauts there with a version of Dragon that is capable of carrying crews.

Blasdell sued Hawthorne, California-based SpaceX two years after he was fired on April 1, 2014. He had worked at the private company for more than three years, testing avionic components of Falcon 9 launch vehicles and the Dragon spacecraft, according to his complaint.

He alleges that his managers pressured technicians to deviate from written test procedures and to sign off on tests of rocket parts that hadn’t been conducted according to protocols.

These practices “were extremely dangerous and could possibly lead to a damaged or faulty part ending up in a SpaceX rocket, which could result in a rocket exploding in orbit, and worse, could result in the catastrophic loss of human life," according to Blasdell’s complaint.

Blasdell said his managers minimized his concerns in part because they didn’t want to slow down production. He eventually met with Musk in early 2014 to complain that employees were signing off on procedures they didn’t follow and that he didn’t want to follow along. Musk said he would look into it and never followed up with Blasdell, according to the complaint.

"Managers would acknowledge the problems but they wouldn’t get fixed," when he voiced his concerns about the tests compliance with government contracts, Blasdell testified Tuesday under questioning by his lawyer.

The former employee was precluded by the judge from speculating whether other SpaceX technicians were falsifying test results. His testimony is scheduled to continue Wednesday.

Fahey earlier granted the company’s request to throw out Blasdell’s claim that the company defamed him by calling him disruptive.

The case is Blasdell v. Space Exploration Technologies Corp., BC615112, California Superior Court, Los Angeles County (Los Angeles).

I wouldn't be surprised if it turns out that corner-cutting is how SpaceX has seemingly managed to achieve so much so quickly.
 
Tonight's launch is to the ISS, with the booster returning to Cape Canaveral for the landing. What makes this launch exciting for us here in the UK is that we should be able to actually see the spacecraft in the sky, before it's even made its first orbit.

Launch is scheduled for 22:55 tonight, and it should fly above Southern England/Northern France 18 minutes later. Look West at around 23:13 (but I'd give yourself a few minutes beforehand - this isn't an accurate prediction), just to the right of the setting moon. Dragon should arc across the Southern sky for about 2m30s before disappearing into the Earth's shadow. The discarded 2nd stage should be flying more or less in formation, having only separated 5 minutes prior.

And then because it's headed to the ISS's orbit, it means that you'll see the ISS follow the same trajectory a little later at 23:33.

If you head outside earlier in the evening, you'll be able to see the ISS make a very close overhead pass at 21:57, from West to East almost directly overhead for about 5 minutes. This is about as good a view as you can get from here.

Now, fuck off clouds.
 
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Dragon should arc across the Southern sky for about 2m30s before disappearing into the Earth's shadow. The discarded 2nd stage should be flying more or less in formation, having only separated 5 minutes prior.
If you have a dark enough sky and/or binoculars you should see up to four objects - the Dragon, the Falcon upper stage and two separate solar array covers all in proximity to each other.

Rough path of CRS-11 as seen from London for an on time launch:
CRS11.jpg
 
From right to left, descending?
Sorry, yes. Climbing from the right (western horizon) beginning 23:10:39BST, culminating in the SSW at 23:14:25BST (just past Arcturus) and then entering eclipse at 23:14:53BST (between Hercules and Ophiuchus). Though I suspect the estimated orbit used for that calculation will be running something like 51 seconds early (so culmination would actually be more like around 23:15:16BST). Of course the final state vector for the targeted initial orbit will most likely only be computed in the final half hour or so prior to launch so precise launch time and/or degree of out of plane steering back into the target orbital plane may vary which will skew the timing a little.

Full sky view from London (North top, Western horizon to the right):
CRS11-fs.jpg

Additionally, intriguingly, the recent F9 NROL payload (USA 276) is now in an orbit closely following the ISS. If its orbit isn’t changed over the next couple of days then during the CRS-11 approach and berthing USA-276 will pass very close (almost within 20 km at times). There is some speculation that one of the packages on USA-276 may be a technology demonstrator for monitoring other satellites operations in orbit.


PS Now I recall, I did see the ascending CRS-6 over the UK back in April 2015 and posted about it here. From a suburban sky I clocked all four items - the Dragon, the upper stage and the two solar array covers.

Update: Launch now targeted for 22:55:53BST.
 
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weather's not looking too promising :-/

EDIT: That pass of the ISS was the best I've ever seen. Clear dusk sky, and right overhead at a real clip.
 
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Looks like it is going to be a scrub due to lightning rule violations (strike within 10nmi the clearing time of which would over run the launch window). 48 hour turnaround, which should mean it’ll still be possible to spot it on Saturday if the weather here co-operates (launch targeted at 22:07:26BST).

PS If you are all wound up for a launch tonight then an Ariane 5 is due off in about 2 hours at 0045BST.
 
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it’ll still be possible to spot it on Saturday if the weather here co-operates (launch targeted at 22:07:26BST)
So do *all* ISS missions overfly England/Europe? Or do they launch on the descending node as well?
Obviously the timing has to be right for the spacecraft to be in sunlight while it's dark down here.

(PS: 48h turnaround because one of the science payloads needs to be taken out of the capsule and have its temporary coolant refreshed)
 
So do *all* ISS missions overfly England/Europe? Or do they launch on the descending node as well?
All shuttle missions to ISS launched on the ascending node (to provide for sufficient space downrange to recover SRBs and dump the external tank, plus to provide for trans-atlantic contingency abort sites); I imagine the F9 does likewise for similar reasons - ie range safety - much more empty ocean to play with (a descending node would get too close to the Bahamas/Lesser Antilles).
Obviously the timing has to be right for the spacecraft to be in sunlight while it's dark down here.
Particularly Earth shadow - if the pass starts to run too late into the night then the satellite can be eclipsed, especially on the first (lower) ascent pass. The height of the Earth’s shadow in your local sky varies greatly seasonally. It is shortest and provides for the longest viewing window at our latitudes in the summer. This delay actually improves the viewing circumstances (the launch time to the ISS moves back about 24 minutes per day as the orbital plane precesses westwards).
 
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I had a quick google and the Orbital Taurus sometimes launches Cygnus missions on the descending node. Their launch site is further up the coast so they must avoid the islands.
 
I had a quick google and the Orbital Taurus sometimes launches Cygnus missions on the descending node. Their launch site is further up the coast so they must avoid the islands.
Wallops? Yes, lots more ocean to play with but of course less ‘free’ delta-V (and thus payload capacity) from the Earth’s rotation.

Weather at KSC not looking that great for a Saturday launch attempt - 70% chance of rain and lightning. Here the skies look like they might be clearer...
 
The weather forecast for Saturday now has a 40% probability of launch weather constraint violation (arising from the anvil cloud rule, the cumulus cloud rule and risk of flight through precipitation) and 50% if delayed (the weather forecast looks to be even less favourable from Monday onwards).
 
Tonight from London for a launch at 22:07:26BST sees it rising in the W at 22:25:35BST, culminating in the SSW at 22:29:26BST, heading to the ESE by 22:31:14BST. North to the top, West to the right:
crs11-l.jpg
No change in the launch weather forecast so far.
 
Launch now 22:07:38BST so add about 12 seconds to the previous times (the predictions are best estimates anyway).
 
Could see all 4 objects (Dragon, upper stage and the two solar panel covers) naked eye from central, rural UK. Nice view. Very bright. Almost looked like some large, silent aircraft (navigation lights) as it headed down to the SE.

As seen from Somerset this evening just (this was pretty much as it appeared naked eye):


e2a: and of course, not to forget the launch and first stage recovery…


 
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But tonight it's clear, so we should be able to see the ISS, the just-departed Cygnus, and the on-approach Dragon all in the same pass (how close I can't find out)

This is the ISS track:

PassSkyChart2.ashx
 
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