JHOLLAND1
Titanium
- Joined
- Oct 8, 2005
- Location
- western washington state
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JHolland -
Interesting video. The other day I saw on YouTube one about the former East German - guess it is what one would call a corvette class vessel - that is at the museum ship USS Massachusetts site. It was built in mid 80s in Leningrad I believe they said. In showing the fire control for one of the gun systems it was analog - a maze of gears. That technology went out for us years before, digital by that point. ..........
EMP won't bother gears.......
USSR metal working machines were very popular here due to large subsidies and low prices .....they were also quite solid machines .....All that ended with the fall of the USSR,and no more subsidies. .....the only import machines to survive were the Belarus tractors.,and they didnt last long ,as I believe the factory was sold to an oligarch ,and closed down.
EMP won't bother gears.......
JHolland -
Interesting video. The other day I saw on YouTube one about the former East German - guess it is what one would call a corvette class vessel - that is at the museum ship USS Massachusetts site. It was built in mid 80s in Leningrad I believe they said. In showing the fire control for one of the gun systems it was analog - a maze of gears. That technology went out for us years before, digital by that point. Again, if I remember my training on the fire control system in an M-60 series tank - I was schooled on that one in 1972 - the ballistic computer for gun tube super elevation was analog, but of course an earlier 60s design.
Been a bit of conversion from gears to electrons in our lifetimes for sure.
Dale
EMP will not bother vacuum tubes either. A Russian pilot defected with his MIG in the 80s and the US was initially dissing their use of vacuum tubes, until we realized this was done to allow the Russian planes to operate in close proximity to the big bang, until the pilot cooked.
The first step towards electrons was analog logic via vacuum tubes. for example the B29 remote controlled turrets used analog logic with tubes. While digital logic with tubes was a nightmare, analog logic with tubes is elegant. I am building a fuel injection system for my hotrod flatheads using military surplus tubes from the Army Air Corp. A single tube is the complete computer, with one grid of the pentode suppressing fuel flow as RPM is reduced, one grid reduces fuel flow as manifold pressure is reduced, and one is tied to an EGT sensor to reduce fuel flow after cold start. Vibration is no issue at the tubes used in military aircraft were rated to withstand 500G acceleration. The Navy actually had 600G tubes for use near the 16in. guns. But really cool were the miniature microwave tubes used in the proximity fuses for navel anti-aircraft shells. I have no idea how many Gs they could withstand.
This sounds quite cool, but wouldn't the responses be "relatively" linear, or uniformly curved? My understanding of fuel delivery is that ideally it's not a linear progression, but tuned to match the wave dynamics of gas flow in both intake and exhaust, which aren't linear with RPM changes.
When you get your system running I hope you'll make a video of the setup, I'd love to see it.
This sounds quite cool, but wouldn't the responses be "relatively" linear, or uniformly curved? My understanding of fuel delivery is that ideally it's not a linear progression, but tuned to match the wave dynamics of gas flow in both intake and exhaust, which aren't linear with RPM changes.
........
USSR metal working machines were very popular here due to large subsidies and low prices .....they were also quite solid machines .....All that ended with the fall of the USSR,and no more subsidies. .....the only import machines to survive were the Belarus tractors.,and they didnt last long ,as I believe the factory was sold to an oligarch ,and closed down.
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