SpaceX Tuesday...
Discussion
Launches will be delayed a bit longer, but with the upgraded Falcon 9.
http://spacenews.com/spacex-to-debut-upgraded-falc...
http://spacenews.com/spacex-to-debut-upgraded-falc...
Toaster said:
Mojocvh said:
Quite incredible that they used accelerometers as acoustic sensors to triangulate "where the noise" came from...
Could you point me towards some online information as I find the use of a primary sensor for a secondary purpose actually quite intriguing from an engineering perspective, thanks.
Mojocvh said:
Really?
Could you point me towards some online information as I find the use of a primary sensor for a secondary purpose actually quite intriguing from an engineering perspective, thanks.
https://www.reddit.com/r/spacex/comments/3e19r0/acoustic_triangulation/Could you point me towards some online information as I find the use of a primary sensor for a secondary purpose actually quite intriguing from an engineering perspective, thanks.
http://www-mech.eng.cam.ac.uk/profiles/fleck/paper...
ftp://78.38.77.30/cee/baganji/resonator-filter/References/15.pdf
http://www.sciencedirect.com/science/article/pii/0...
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&a...
http://www.sciencedirect.com/science/article/pii/S...
http://www.sciencedirect.com/science/article/pii/0...
http://www.sciencedirect.com/science/article/pii/0...
Lots of references out there, if you are a uni student you can access via the Uni Library for most of these for £0 but for mere mortals research papers tend to cost unless you can get an Athens or similar access.
There are quite number of others and yes I think Scientists and Engineers can be quite lateral thinkers and when you hear how a technique has been applied it does make you think wow. However those accelerometers possibly had two or more tasks they could carry out so why not use them for an established technique.
Just edited to ask how do you know what the primary use was ?
Edited by Toaster on Saturday 5th September 20:53
To answer your question, I dont! I'm more accustomed to accelerometers being used for rate measurement in control systems.
However there is some "good stuff" there, thank you for listing them.
It is of course correct to call the sensors accelerometers I don't think calling them "knock sensors" would do them justice.
I had personal experience, a couple of years back, of incorrectly fitted "accelerometers" or as they were called g meters, in the nacells of wind turbines causing false warnings and shutdowns along with one case of actual tower vibration limits being exceeded, although it would have been more pleasant as a remote experience.;)
Thanks again for those links
Mo.
However there is some "good stuff" there, thank you for listing them.
It is of course correct to call the sensors accelerometers I don't think calling them "knock sensors" would do them justice.
I had personal experience, a couple of years back, of incorrectly fitted "accelerometers" or as they were called g meters, in the nacells of wind turbines causing false warnings and shutdowns along with one case of actual tower vibration limits being exceeded, although it would have been more pleasant as a remote experience.;)
Thanks again for those links
Mo.
Edited by Mojocvh on Sunday 6th September 00:18
SpaceX may win its first U.S. military satellite launch after the only other certified bidder, a Boeing Co.-Lockheed Martin Corp. joint venture, decided not to compete.
SpaceX plans to charge less than $100 million for military missions, Chief Operating Officer Gwynne Shotwell told a U.S. House of Representatives subcommittee in March. The Boeing-Lockheed company charges $160 million or more for the comparably sized Atlas V rocket, according to Teal Group estimates.
http://www.bloomberg.com/news/articles/2015-11-17/...
SpaceX plans to charge less than $100 million for military missions, Chief Operating Officer Gwynne Shotwell told a U.S. House of Representatives subcommittee in March. The Boeing-Lockheed company charges $160 million or more for the comparably sized Atlas V rocket, according to Teal Group estimates.
http://www.bloomberg.com/news/articles/2015-11-17/...
Edited by Mojocvh on Tuesday 17th November 12:58
SpaceX has received its first order from NASA for a crewed flight
http://www.nasa.gov/press-release/nasa-orders-spac...
http://www.nasa.gov/press-release/nasa-orders-spac...
MartG said:
SpaceX has received its first order from NASA for a crewed flight
http://www.nasa.gov/press-release/nasa-orders-spac...
I wonder which they'll manage first, a manned Dragon flight or soft landing a 1st stage successfully. Looking forward to both.http://www.nasa.gov/press-release/nasa-orders-spac...
Interesting development following the loss of the Falcon 9 back in June. It seems portions of the rocket have washed up near the Scilly Isles
http://www.bbc.co.uk/news/science-environment-3494...
http://www.bbc.co.uk/news/science-environment-3494...
Eric Mc said:
Interesting development following the loss of the Falcon 9 back in June. It seems portions of the rocket have washed up near the Scilly Isles
http://www.bbc.co.uk/news/science-environment-3494...
Given the encrustation on it, and the time/distance since the explosion, I suspect it's more likely to just be from one of the earlier flights where the stage was discarded - those would probably end up much further East than the exploded onehttp://www.bbc.co.uk/news/science-environment-3494...
If nothing else they gave sea life a nice place to live. They do say that we explore outer space when we know so little about the oceans. SpaceX does both!
Their first semi submersible
Nice story so not such a sad end to the mission. Some column inches to keep them in the public eye and the good jopb they are doing.
Their first semi submersible
Nice story so not such a sad end to the mission. Some column inches to keep them in the public eye and the good jopb they are doing.
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