Bloodhound LSR Thread As Requested...
Discussion
This must suck given all the hard work to meet the deadline: http://www.bbc.com/news/science-environment-331102...
Maybe you'll get some time off?
Maybe you'll get some time off?
fatbutt said:
This must suck given all the hard work to meet the deadline: http://www.bbc.com/news/science-environment-331102...
Maybe you'll get some time off?
I designed most of that rocket pump.Maybe you'll get some time off?
I'm going to refrain from commenting on the article until I've gathered my thoughts
Edited by IN51GHT on Saturday 13th June 08:22
IN51GHT said:
fatbutt said:
This must suck given all the hard work to meet the deadline: http://www.bbc.com/news/science-environment-331102...
Maybe you'll get some time off?
I designed most of that rocket pump.Maybe you'll get some time off?
I'm going to refrain from commenting on the article until I've gathered my thoughts
The complexity and risks involved in this attempt means you MUST be totally in control and crucially fully familiar with all the systems and sub systems on the vehicle. The team must do enough testing before and proper runs to ENSURE they are able to make the best decisions, and crucially to avoid wasting time and money on ultimately futile attempts.
I can tell you from a lot of experience with high speed rotodynamic machinery, the chances of designing a one off, high performance pump like this and having it work perfectly the first time are, practically nill, even for people who's full time job is to design these things!
One interesting option you could consider is to make the pump a "service item" although access to it during the 1hr turn-around is i suspect a bit hindered? (are there safety concerns with abrading(friction = heat) of the impeller/casing with the HTP in contact btw?)
Max_Torque said:
IN51GHT said:
fatbutt said:
This must suck given all the hard work to meet the deadline: http://www.bbc.com/news/science-environment-331102...
Maybe you'll get some time off?
I designed most of that rocket pump.Maybe you'll get some time off?
I'm going to refrain from commenting on the article until I've gathered my thoughts
The complexity and risks involved in this attempt means you MUST be totally in control and crucially fully familiar with all the systems and sub systems on the vehicle. The team must do enough testing before and proper runs to ENSURE they are able to make the best decisions, and crucially to avoid wasting time and money on ultimately futile attempts.
I can tell you from a lot of experience with high speed rotodynamic machinery, the chances of designing a one off, high performance pump like this and having it work perfectly the first time are, practically nill, even for people who's full time job is to design these things!
One interesting option you could consider is to make the pump a "service item" although access to it during the 1hr turn-around is i suspect a bit hindered? (are there safety concerns with abrading(friction = heat) of the impeller/casing with the HTP in contact btw?)
This is the first pump of any description I've designed, the performance results were way above what we expected, the redesign after the failure was done within two weeks...
IN51GHT said:
All of the materials used are HTP compatible so no issues if there was any abrading.
I was thinking more about what the HTP does, being highly oxidising, if you get metal to metal contact, resulting in heat? For a LOx pump that would be instant "game over"...IN51GHT said:
This is the first pump of any description I've designed, the performance results were way above what we expected, the redesign after the failure was done within two weeks...
In which case, pat yourself on the back, as it looks better than some pumps i've seen from people designing there 10th one! ;-)You know what they say the definition of engineering is: On time, on spec, on budget: Pick two.
I do know how I would feel in your shoes though. Having done a bloody good job on stuff that's normally outside your domain, and then... stuff. Nice close-up on the strain gauges, always good to see the electronics geekery
I do know how I would feel in your shoes though. Having done a bloody good job on stuff that's normally outside your domain, and then... stuff. Nice close-up on the strain gauges, always good to see the electronics geekery
Will there be any data logging stuff in the point like a pitot tube?
I'm presuming of course that the rumbling through the ground doesn't shake up a layer of pitot-clogging dust just barely ahead of the vehicle (what with how sound through the ground travels faster than sound through the air)...
I'm presuming of course that the rumbling through the ground doesn't shake up a layer of pitot-clogging dust just barely ahead of the vehicle (what with how sound through the ground travels faster than sound through the air)...
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