Showing posts with label rockets. Show all posts
Showing posts with label rockets. Show all posts

Saturday, November 1, 2014

Virgin Galactic spacecraft crashes with a test pilot killed.


Unfortunately, more sad news this week, this time all the more sadder with a death and another in hospital.

No doubt this disaster will take a toll on the Virgin Galactic team as it did on Burt Rutan in 2007.

Looks like another engine failure for this week, this time with a solid rocket that apparently exploded. They have already tested powered flights 3 times and unpowered - gliding flights over 20 times.
I've always liked liquid engines more with their increased capabilities including throttling and manual engine stop, which is obviously a plus for safety.

With SpaceX making things look so easy (including soft-landings on the ocean) with their in-house manufactured and tested Falcon 9 (and Merlin engines), these recent events have reminded us all of how dangerous the frontier of space can be, especially with rocket engines being in a whole different class compared to conventional combustion engines or even turbojet engines you'd get in airplanes.

BBC has more coverage. (with eye witnesses)

and so does Space.com (warning, Space.com's 2nd video has slightly graphic description of the aftermath).

Wednesday, October 29, 2014

SpaceX landing on floating platform in the ocean CONFIRMED! =P && Antares (by Orbital Sciences) explodes. =( UPDATED

SpaceX landing on floating platform in the ocean CONFIRMED! =P


So Elon Musk has confirmed SpaceX will attempt to land on a floating platform 90m*50m for their next Falcon 9 flight. YAY!

Florida Today:
He estimated no better than a 50-50 chance of a successful platform landing on the first attempt.
[...]
"So I think we're quite close," he said.
SpaceNews.com:
“We actually have a huge platform that’s being constructed in a shipyard in Louisiana right now,” Musk said in the interview, which was webcast live. He described the platform as about 90 meters long by 50 meters wide. “We’re going to try and land on that on the next flight.
“There’s at least a dozen launches that will occur over the next 12 months,” Musk said. “I think it’s quite likely — probably 80 to 90 percent likely — that one of those flights will be able to land and refly.”

Space.com coverage: www.space.com/27538-spacex-reusable-rocket-test.html


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Antares (by Orbital Sciences) explodes. =(


Sadly, the Antares rocket has exploded seconds after launch for their CRS-3 mission:


From simple visual inspection of this video, it seems like an engine failure for one or both engines - from the small engine flash and subsequent smoke; (or other failure causing engine flame-out or automatic shutdown). Subsequently, with no thrust, the rocket fell back to earth and the impact caused the big explosion.

Cargo carried included normal CRS foodstuffs, experiments, etc, and the Arkyd3 - a testbed for Planetary Resources' telescope satellites, including one which was Kickstarted (including a contribution from yours truly). 

According to Wikipedia, Orbital Sciences hasn't had that many failures, with successes in all Minotaur vehicles and the Pegasus with 3 outright failures and 2 partial successes (on primary payload) early in their launch history.Note that this is in line with many launch vehicle companies including SpaceX, whose Falcon 1 platform was their testbed which failed 3 out of 5 times.

However, SpaceX's Falcon 9 has had no failures except 1 secondary payload failure over its 13 total launches these last 4 years. Add to that: NASA pays $1.6 billion to SpaceX to deliver cargo over 12 missions while they have to pay $1.9 billion to Orbital Sciences for only 8 missions. Add to that each mission delivering more cargo in the Dragon by mass than Orbital Sciences' Cygnus spacecraft. The Cygnus is only superior in delivering more pressurized volume than the Dragon, and can't return cargo to Earth like the Dragon does.

Talk about SpaceX cutting costs and competition savings! (The citizens of USA should be glad SpaceX is now able to compete for USAF/DoD/NRO contracts.) I'm glad it's SpaceX that won the CCDev contract, and has a really cool Dragon V2 crewed spacecraft coming out, designed for reusability and landing by thruster functionality. Hurray for SpaceX reusability - providing sustainable and cheaper access to space!

Dailymail's coverage, in-depth: http://www.dailymail.co.uk/news/article-2810128/Ready-liftoff-Nighttime-rocket-launch-International-Space-Station-visible-East-Coast.html
Space.com's coverage, editor promises updates on this page:
www.space.com/27576-private-orbital-sciences-rocket-explosion.html

UPDATE:


More about the accident and engine here: http://www.spacenews.com/article/launch-report/42340antares-rocket-explodes-after-liftoff includes spectator video and sound of explosion:


Press conference at 9pm ET (12pm AEDT, now) on Nasa TV

Broadcast live streaming video on Ustream

More updates to follow probably; from conference:
Emphasis of launch/rocket science and space science being hard (obviously). No injuries, only lost hardware.
Orbital Sciences - will investigate what's wrong, solve the problem and prevent future problems.
Investigation includes evaluating debris (like aircraft investigations [like ATSB]!) - don't touch debris, could be dangerous.
Wallops - good range clearing of safety area.
ISS - incl crew in good shape, have supplies for at least 4-6months always, Progress spacecraft tomorrow, SpaceX on Dec 9, quite a bit of research hardware lost and spare hardware.

Investigation data and everything locked down until investigation process goes through; wait for daytime for debris collecting. Solid propellant burning in area. Contract - provides for ability to eventually get hardware lost on this flight to orbit, Orbital compensates NASA if they don't reach orbit. Launchpad could be damaged, tank pressure sensor readings still available and holding pressure - extent of damage not known until fully investigated.
Engine failure observed in telemetry and visually ~T+10s and range then sent the destruct command ~T+20s, before it hit the ground.
Investigation: Orbital in command, supported very well by NASA and MARS (@Wallops), debris in morning, cameras, telemetry/data. Orbital obviously won't fly until they know and correct the problem.
Insurance - Orbital does have various/some amounts of insurance on their launches.
Engines - Orbital chose to go with this (Russian) engine as there weren't many choices for powerplants of this size, especially in USA, and it was extensively tested and has proved robust. They've also chosen another engine for future Antares, according to the link above providing the video of spectator view. Wonder if they considered using SpaceX's engines =P

Monday, August 25, 2014

SpaceX news updates (external video of F9R landing!)

So a rocket basically exploded, hasn't happened to my knowledge since Falcon 1 series. It was only a test vehicle (grasshopper with 3 merlin engines) and it was according to system definitions - auto-terminated once parameters weren't right.

Here's the video of it exploding:

Failure is good, helps them make their rockets better and more reliable! =) Having played KSP I'm surprised this hasn't happened in a while (in a test vehicle for SpaceX) haha.

The "Failsafe" reminds me of that in the requirements in the autopilot for the UAV Outback Challenge. Recently joined the Monash team, one of the many advantages of a university with a larger cohort - enough people to make teams for this kind of stuff! =)

Video of Falcon 9 first stage landing on water. Extra cool!


Previously I reported on an on-board video of the landing, check it out at this link!



Monday, August 11, 2014

The return of the ISEE 3

http://spacecraftforall.com/home


Great website with cool interactive documentary-like experience! Check it out! Also, it'll be live-streaming the fly-by of the moon in a few hours (Sunday, August 10th 10:30am PT - 12:00pm PT) , but I'll be asleep. Also includes live data anytime! =)

This whole project was crowdfunded and they (the hackers/makers) work in a hackerspace/mission-control in an old Maccas building! Lol! And with NASA's blessing =) Them talking about *SCIENCE* so much reminds me of stuff like Portal, xkcd, KSP (get them science points!) haha.

Also, great post about SoftwareDefinedRadio; been meaning to get my HAM radio callsign sometime soon ...

Also, the initial swing-bys to get to the 1st comet flown through by man is so cool and complicated, it reminded me of an epic version of this:
Ahem. We are STRICTLY an Orbiter shop.

I mean, orbiting in one plane is hard enough to learn (in a fun way) in KSP. Add in polar plane and crazy manoeuvres and orbits like Quasi-Zenith and I have to spend more time wrapping my head around more simulations, models and reading.
P.S. My short-term goal is to build and launch a (nano)sat in one of them Quasi-Zenith orbits servicing Australia =P Hopefully I'll get to crowdfunding when I've actually done work on it xP.

Wednesday, July 23, 2014

SpaceX reusable rocket video (SpaceX does it again!)

So reusability landing footage from last week's successful SpaceX-Orbcomm mission has been released by SpaceX! Apparently this time no file repairing was needed like last time when they crowd-sourced help for repairing their mpeg via reddit =P.
There is however, icing, which blurs/obscures the video quite a bit.



SpaceX's full blog/news post (quoted at the end) has more information, including that they touched down at close to 0 velocity, and the next 2 flights they will not attempt reusability tests since they are higher orbits (GTO). However, after that on flights 13,they will test landing on water and (flights 14, 15) on solid ground with increased chance of success. Apparently it's easier to land on land than on water?! (It could however, be just a platform in the ocean.)
I'm guessing they have great control over where they're able to land. (It's harder to gauge when and how to burn by eye/hand when landing from orbit to KSC in KSP -which was recently 40% off on Steam and now features contracts and rewards for recovery of things like boosters/stages =P)

Here's the full quote from the SpaceX blog (because the info is so juicy):
Following last week's successful launch of six ORBCOMM satellites, the Falcon 9 rocket’s first stage reentered Earth’s atmosphere and soft landed in the Atlantic Ocean. This test confirms that the Falcon 9 booster is able consistently to reenter from space at hypersonic velocity, restart main engines twice, deploy landing legs and touch down at near zero velocity.
After landing, the vehicle tipped sideways as planned to its final water safing state in a nearly horizontal position. The water impact caused loss of hull integrity, but we received all the necessary data to achieve a successful landing on a future flight. Going forward, we are taking steps to minimize the build up of ice and spots on the camera housing in order to gather improved video on future launches.
At this point, we are highly confident of being able to land successfully on a floating launch pad or back at the launch site and refly the rocket with no required refurbishment. However, our next couple launches are for very high velocity geostationary satellite missions, which don’t allow enough residual propellant for landing. In the longer term, missions like that will fly on Falcon Heavy, but until then Falcon 9 will need to fly in expendable mode.
We will attempt our next water landing on flight 13 of Falcon 9, but with a low probability of success. Flights 14 and 15 will attempt to land on a solid surface with an improved probability of success.
Space Age, here we come!!! =D

Tuesday, October 1, 2013

Australian Space Agency - why

Came across a good article here about why Australia needs a space agency, and how we can create our own solutions instead of piggybacking off others and be able to build a new industry which benefits us.


The ACSER seems pretty cool.
I wonder if the GPS module could be used for other Australian spacecraft ...

Also, if you read my Mt Stromlo (AIAA tour) post back in early August when AIAA Sydney Section toured Canberra, here are some projects that the AITC are looking at at the moment. Hope I get to participate soon =)

Wednesday, May 1, 2013

2012 SciFi realities and Future Tech + Virgin Galactic

http://myscienceacademy.org/2013/01/03/27-science-fictions-that-became-science-facts-in-2012/


That chimera - bloody biologists are making FMA stuff a reality! I also lol'd at the accidents on self-driving cars ...

Also, Oculus Rift (revealed 2012) is a giant leap for NerveGear (SAO).

And congratulations to the folks at Virgin Galactic for the first powered SpaceShipTwo flight breaking mach 1, add that to the list of official responses =P.

Sunday, November 4, 2012

Uchuu Kyoudai dubbing from space =P

Haha, just watched the episode that aired today from Uchuu Kyoudai aka Space Brothers!
The dubbing part (aka 1st voice acting in space) was funny although he was a bit monotone ><
http://www.animenewsnetwork.com.au/news/2012-10-08/astronaut-successfully-dubs-space-brothers-anime-from-space
よく頑張ったな!
coughgetyourepisodesfromcyber12orwatchliveatkeyholetvmaybeandbuythestuffwhenitbecomeavailableinyourregion=Dcough

Watch him speak IRL in a google hangout with some funs =P
http://www.youtube.com/watch?v=36zs0w1fEZA&feature=share&list=UUfMIdADo6FQayQCOkLYGhrQ
OMG at 1:25:35 you see the author of the Uchuu Kyoudai manga appear =O =D

For my Australian friends, the movie's screening in Sydney and Melbourne:
http://www.japanesefilmfestival.net/film-spacebrothers.html
Too bad I'm in neither city at the time it's being aired =(
Will have to wait for DVD to come out or go to Japan and watch it =P


-----------------------------

Again, ETA of Ubunchu -  out this week =)

Thursday, August 16, 2012

Copenhagen Suborbitals first LES+capsule test

http://www.wired.com/wiredscience/2012/08/copenhagen-suborbitals-test/?pid=4590&viewall=true

So check out the stuff there.
Or click here for full article right here:

I hope this code from http://bungtutor.blogspot.com.au/2011/02/how-to-make-spoler-in-blogspot-blogger.html works ...


Dave Mosher
Dave Mosher is a Wired.com contributor and freelance science journalist obsessed with space, physics, biology, technology and more. He lives in New York City. G+
Read more by Dave Mosher
Follow @davemosher and @wiredscience on Twitter.
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Or just watch the cool vid here:

Friday, December 10, 2010

A certain SpaceX newsletter ...

A certain SpaceX newsletter ...
Onya!


 
SpaceX Reveal’s Dragon’s “Secret” Payload 
Hawthorne, CA – Before the successful launch, voyage, and recovery of SpaceX’s Dragon Spacecraft, the first time in history a commercial company has recovered a spacecraft from orbit, reporters were buzzing with news of a “secret” payload, stowed on board.
It was a payload so secret, SpaceXers made it Top Secret (think Val Kilmer 1984, not official US Government).
Top Secret payload, bolted to the floor of the Dragon spacecraft. Photo Credit: Chris Thompson
So what was inside the mystery package?  Their tribute to Monty Python.
A wheel of cheese.
Top Secret payload revealed.  Photo Credit: Chris Thompson, SpaceX
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