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  1. wfcook

    Need a contact with NASA P/R department

    Does anyone have a contact with NASA public relations? An associate of mine needs to contact them regarding the Apollo 50th anniversary.
  2. wfcook

    3/4 Mercury Redstone

    It was epic.
  3. wfcook

    3/4 Mercury Redstone

    I don’t think Adrienne is ever going to forgive me for telling Geoff how good she is with vinyl graphics LOL Sent from my iPhone using Rocketry Forum
  4. wfcook

    3/4 Mercury Redstone

    I’ve been cutting out the graphics for this for the last couple of days, because I happen to have access to a six-meter vacuum cutting table that we have at the loft and no longer use for manufacturing, but which happens to be perfect for very large vinyl graphics... The capsule...
  5. wfcook

    Flyaway Rail Guide Durability

    Guys, send me your info. I have been working on some changes for some time, and will be implementing them soon. The initial design erred on the side of not taking your fins off, and honestly in several hundred thousand Newton-seconds if testing on our part the rate of failure has been low, but...
  6. wfcook

    BALLS 26 - September 22-24, 2017

    FredA Please send me a PM, I make the guides. I am terribly sorry that your flight did not go well. This is the first time that I have heard of them actually causing a crash or indeed a failure of this type. I'd like to hear every last detail if you don't mind, in the interest of safety...
  7. wfcook

    Hyperion--TRA Level 3 Build

    I had missed that, but yes it is absolutely clear that the initial charge popped the nosecone free nose cone damage...I still think this is due to a likely arboreal recovery. One thing I did notice was that the vent holes to the av-bay were partially misaligned. It is not clear whether...
  8. wfcook

    Hyperion--TRA Level 3 Build

    This camera was mounted in one of those mounts as well. I am not sure why the alignment was off, unless the lens was misaligned in the camera case. Is is an 808, but does not appear to be an 808#16.
  9. wfcook

    Hyperion--TRA Level 3 Build

    Odd thing is that the camera was in one of Landru's 808 camera mounts, so it is possible that the lens slipped or something.
  10. wfcook

    Hyperion--TRA Level 3 Build

    Recovery notes: Yesterday I went to the farm to get Matt's rocket. The approach to the farm is a gravel drive lined with signs that say 'keep out', 'trespassers will be prosecuted', etc. The rocket was leaning up against some farm equipment and I am not sure whether it was placed there in...
  11. wfcook

    Hyperion--TRA Level 3 Build

    Target acquired
  12. wfcook

    29mm fly away rail guide

    They've been back-ordered for a little bit, but I hope to be back on line and printing very soon. Do you have a target date?
  13. wfcook

    Hyperion--TRA Level 3 Build

    Another option: I get very good FedEx ground rates from the office, and the place is chock full of boxes suitable for shipping a rocket.
  14. wfcook

    Failure Analysis of Hyperion

    Two is generally a not a great idea, as it sets up possibilities for a Kármán vortex street. Think about what can happen in your car with two opposite windows open - it's not pleasant for your ears until you open the third. I don't have definitive wind tunnel data to show that it is an issue...
  15. wfcook

    Failure Analysis of Hyperion

    Guys let's focus on retrieval. A lot of people better than me have estimated where they think it should be. What do you think would be a good search plan? If the collective can get their neuron pairs to run together and come up with one, I'll try to make a Saturday of it. I am sans children this...
  16. wfcook

    Failure Analysis of Hyperion

    I may be able to go look for this thing Saturday. Who would be up for getting together for a systematic approach (always asking permission from landowners, though!) ?
  17. wfcook

    Failure Analysis of Hyperion

    I bring it up because I noticed that rockdoc likes to use larger pins for the cargo bay and smaller pins for the sustainer and sizes his charges accordingly, and this seems like a good idea for helping to avoid spitting out the main at apogee.
  18. wfcook

    Failure Analysis of Hyperion

    Were you also using 4-40 shear pins for the sustainer or were you using smaller pins there?
  19. wfcook

    Question about rail button spacing

    Exactly
  20. wfcook

    Question about rail button spacing

    Your explanation leads me to a slightly different conclusion: The forward guide should be placed far enough forward to support the rocket on the rail in a safe orientation. This does not necessarily mean CG/CP90, and is likely aft of that point. Moving the forward guide any further forward than...
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