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Fr Robert Ballecer, SJ , Bryan Burnett , following up on the jet scramjet discussion It would...

G+_Jeff Brand

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G+_Jeff Brand Newbie

G+_Jeff Brand

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Fr. Robert Ballecer, SJ , Bryan Burnett , following up on the jet/scramjet discussion.. It would be cool to see more about pulse jets which also have no moving parts. Mythbusters and Colin Furze have done some projects on the subject and it seems like a fun homebrew project for anyone who can weld and is willing to annoy their neighbors with the deafening sounds of the jet.

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G+_William Burlingame Newbie

G+_William Burlingame

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I enjoyed the discussion about the scramjet.  About 30 years ago, I wrote a program to control a ramjet test bed. I was working as a contractor for the US Army. It was done using an IMB AT.  We had overclocked the AT.  In those days it wasn't done in the BIOS, but we replaced the crystal with a card that had several crystals and a rotary switch that we used to select a different crystal until the system crashed, then backed off. to the next slower crystal.  The army person that I wrote the software for and I co-authored a paper and it was presented to the American Institute of Aeronautics and Astronautics.  Much of the paper was the user manual for the software.  It was at a time when PCs were not taked seriously and thought of by many as a toy.

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G+_William Burlingame Newbie

G+_William Burlingame

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My $35 Raspberry Pi 2 would put it to shame.  Just have to add display, keyboard, DAC, A/D converter. micro SD and SDK.  Probably would cost just a few hundred dollars.  The system we put together then probably cost several thousand in mid 1980s dollars.  I don't remember if we even had an HDD.  If we did, it was probably 5MB.  

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