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Originally posted by jms View PostBlue Streak test area at RAF Spadeadam
Give me a kick!!!!Brian (the devil incarnate)
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Originally posted by Brian Ellis View Post...Rolls-Royce was one of my employer's customers and we developed a system for measuring LOX tank contents under weightless conditions. A very difficult problem which was never put to the test except in gravity conditions. I witnessed two static firings.
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So I wonder...how does it work? (for the time beeing I connected it with the fact that in the tanks of Apollo service module there were "mixers" of some kind apparently - could it be that one of their functions was measuring the drag (and so: average density) of contents?)
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Going off-topic now. The tank had two 3-D honeycombs of thin titanium strips at 90°, so they were insulated from each other and the electrical capacity was measured between them. The dielectric constant of LOX is higher than that of oxygen gas, so the capacity gave an accurate figure of the liquid content, no matter where and how it was in the tank. To visualise it better, touch the middle finger with your thumb of each hand, interlocking them, then moving them so the two rings don't touch each other. The strips were about 25 mm wide and the honeycomb cells about 100 mm across. A real pig to make, though, as each cell had to be closed by spot welding by hand after it was positioned. We made only one for a small experimental LOX tank and it worked. The Blue Streak project was abandoned shortly after.Brian (the devil incarnate)
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Originally posted by jms View PostHmm, I really don't know. Hard to make out who the statue is. At first I thought Shakespeare, but on closer inspection it looks like a woman? Hard to tell.
Originally posted by Brian Ellis View PostGoing off-topic now. The tank had two 3-D honeycombs of thin titanium strips at 90°, so they were insulated from each other and the electrical capacity was measured between them. The dielectric constant of LOX is higher than that of oxygen gas, so the capacity gave an accurate figure of the liquid content, no matter where and how it was in the tank. To visualise it better, touch the middle finger with your thumb of each hand, interlocking them, then moving them so the two rings don't touch each other. The strips were about 25 mm wide and the honeycomb cells about 100 mm across. A real pig to make, though, as each cell had to be closed by spot welding by hand after it was positioned. We made only one for a small experimental LOX tank and it worked. The Blue Streak project was abandoned shortly after.FT.
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