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Recent content by morg

  1. morg

    high speed, high pressure air valves

    Israelkk If I can get one with an orifice .3mm right away, I'll take it. Tell me how. Morg
  2. morg

    high speed, high pressure air valves

    israelkk What is off-on-off time of your valves? What is the largest orifice for that speed and pressure? Morg
  3. morg

    high speed, high pressure air valves

    OK Israelkk, Mass flow is 0.005 lbs/Second. However, that mass flow is integrated over one second. The reality is 0.00015 lbs/0.03 Seconds per valve fire time. Or the valve fires 33.3 times per second for 0.03 seconds per fire. The total mass flow is the 0.005 lbs/second mentioned above. Sorry...
  4. morg

    high speed, high pressure air valves

    israelkk I need approximately 16 immediately for testing, then more. industrial use. 10 million if possible. 12 - 24VDC 50 A dont know leakage, prefer none. dimensions - 8" cube Kentucky Firing frequency in use 3 - 30 times per second Morg
  5. morg

    high speed, high pressure air valves

    Thank you iainuts. I will. Morg
  6. morg

    high speed, high pressure air valves

    OK Here are the new specs. We are going from 4000 psi to 2000 psi on the output. I need 0.003 cubic Ft/30 mS. Time to open and close is 0.030 Seconds. Repeatable. Anyone? Thanks Morg
  7. morg

    high speed, high pressure air valves

    Thank you, Yes, of course I had read that earlier post. I am putting together an engine for use in environments that cannot stand fuel combustion. I have plenty of compressed air to achieve the torque required. I just need to be able to inject the correct amount at the correct time. I also need...
  8. morg

    high speed, high pressure air valves

    Hello, I need an electrically controlled valve or method to move 250 cubic inches of compressed air at 4000 psi in 10 milliseconds or less. Off to On to Off again. In 0.010 Seconds. Is it possible? Are there air valves of that speed? Alternate methods? Longevity - 10 million cycles. If this is...
  9. morg

    Atkinson/Miller/West engine cycle(s)...

    I need an electrically controlled valve or method to move 250 cubic inches of compressed air at 4000 psi in 10 milliseconds or less. Off to On to Off again. In 0.010 Seconds. Is it possible? Are there air valves of that speed? Alternate methods? Morg
  10. morg

    calculating resonant frequency of reentrant cavity

    I need less than 10Mhz drift over 20 degrees. The resonating cavity (brass with silver plate) over time drifted over 50Mhz in a 20 degree span. And because the block of brass had so much mass there was a great deal of temperature hysteresis making it difficult to separate the temperature curve...
  11. morg

    calculating resonant frequency of reentrant cavity

    Hacksaw, I am looking at a single fiber strand. Higgler, thanks for the info and direction. Most of what I've seen may require more measurement equipment than I have at my disposal. Although HP (now Agilent) used to be really good at sampling equipment for a couple of weeks if there was a...
  12. morg

    calculating resonant frequency of reentrant cavity

    Higgler, You've discerned the process exactly. Well done. Yes, the mechanism is fairly simple for determining good/bad. Fortunately for me, it is enough. On the narrow band patch antenna, I have no experience there. Would you suggest a source or site that I could learn enough to make an...
  13. morg

    calculating resonant frequency of reentrant cavity

    Higgler, Axis holes for the fiber strand. SMA through wall connector to launch and receive signal. We are measuring Q and freq. shift. Morg
  14. morg

    calculating resonant frequency of reentrant cavity

    Higgler, Thanks for the input. Interesting about measuring Epsilon. I recall the resonant Frequency changes by the factor of the square root of the Epsilon of the material. Having thought about this problem some more. Does it make since to couple via voltage (antenae) since I will be looking at...
  15. morg

    calculating resonant frequency of reentrant cavity

    Most of my RF work has been with power grid tubes up to 40kw in a Hartley-Colpitts configuration. This was many years ago. This application is 2 orders of magnitude above those frequencies, and the components and effects are smaller than my eyes and fingers are accustomed. Thanks for the...
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