"DCN-15" ballistic missile control computer teardown
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- Опубліковано 14 кві 2022
- I found museum photos of a Redstone missile, the electronic boxes have the exact same look ! heroicrelics.org/air-zoo/redst...
But the manufacturing date doesn't match very well for Redstone, it may rather be a Pershing part, investigations are ongoing.
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part of old analog computer guidance system, called alpha beta tracker system. This section demodulates the carriers, and strips off the amplitudes to get voltage values that represent position of the control surfaces. Very similar to a RC airplane. Only this is all analog. This is part of the receiver section, because it has demodulators, and voltage decoders. A closed loop guidance system, sends control surface position commands, thru the uplink ( ie not this unit) It also receives current control position (this unit) , and it calculates the delta difference between where they want it and where it is. They then send Uplink commands to the missile to make corrections. it is constantly doing this to guide the missile along a track . This is the front-end part of the downlink to allow closed loop control. IT is not really a computer. It is part of a alpha beta tracker computer. The receiver part, the analog computer section is not in that box.
Happy Bengali new year . I can tell this is a great video by the thumbnail. Can't wait to watch it when I get free time
Lucky to get that through post-Brexit customs hell. I recently had a package returned to me in the UK which failed to arrive in Ireland for no reason at all. Sent it again with the same customs form and it arrived the second time. Brexit has been a disaster for small businesses in the UK who regularly send things to the E.U.
I bought a homing unit for £45 but the final price between shipping and import Tax cost me £98.
Item cost = £45
Tax and shipping cost £53 😅
If I can, I will always avoid buying in the UK unfortunately.
' Brexit has been a disaster for small businesses in the UK ' Well, except for the whole 'getting over run by invaders sent by the EU' part, sending a package a second time is a cake walk compared to what that does 20 or 30 years later..
Hour meter because these spent a lot of time powered up and in standby, either for readiness tests, or for maintenance in use. Yes the hour meter is not much use in actual flight, but very useful in the ongoing maintenance of the unit.
I would guess that this is run up from a ground supply during readiness tests as you said. I believe that the Titan at least, was electrically dormant when in standby as the onboard lead acid batteries were kept dry of acid until the launch sequence was initiated.
So this is how missiles know where it is and where it isn't and where it wasn't.
The 2 missing cards , a10 and a1, is probably how its was demilitarized. It would need to be made inoperable to be sent to the collector, or soviet kgb photographing it in the back of the british museum.
That’s a very interesting find.
Hi, nice stuff !
very interesting piece of hardware. i wonder how it ended up on ebay.
looks like a very nice analog computer. maybe some of those cans are op amp ICs?
Ah yes... Redstone circuits...
So there's this Pershing missile system that has a MOST interesting alpha numeric display (simple, crazy simple for a nuclear missile perhaps but, maybe its a panaplex)...
it looks like my circuits I make at home 🤣
When do you think this thing was made?
The only datecode I found is on the hours meter, it says 1964.
😀😀😀
Analog computer, not digital.
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Manufacture date of 1964 and a fully transistorised design using printed circuits seems too late for Redstone (production ended 1961) or Thor (a late 50s design largely used for space launch after withdrawal from the UK in 1963). The timescale fits Pershing I which was an ABMA and Martin development designed around 1960 and in production during 1964 see en.wikipedia.org/wiki/MGM-31_Pershing
Yes, very interesting, though I doubt he will get much more of these, as the parts are still classed as munitions, and thus land up going through a shredder, then through a compactor, then go into an incinerator afterwards.
Still wonder if he will get any more of the associated components of the TAV36 laser he did a while ago, that integrated system is pretty good for the era it was designed in.