What’s Happening at JPA

  • Antenna Stands and Launch Boxes

    We been changing to new frequencies on our telemetry systems. One of the results is that we no longer need the big “double boomer” phased antennas. We still use one of the single long antennas. The single antenna stand doesn’t need to be as beefy a stand as the double does. The old stand could hold two antennas in high winds without a problem but it came with a price. It takes two people thirty minutes to assemble each one of them in the field. They’re so complicated that we always have an antenna assemble training session before each mission.

    Saturday the team took one of the dish antenna stands and modified it for single long antenna use. It came out fantastic. The new stand only takes five minutes to setup. Not only will the new stand save us gobs of time in the field, but it’s much easier to pack and has a much smaller part count.

    Ed and Emmett and the new antenna stand Ed, Emmett and the new stand.

    Old Antenna Stand The old stand.

    Work continues on the refurbishing the rocket launch box. Saturday the two layers of foil were glued to the inside surfaces. The foil protects the foam from catching fire from the rocket’s blast. We’re be using this box for a systems test flight. The rocket will be there but not launched. However the foil changes the radio environment of the box. It needs to be there so the test will be accurate.
    Foiled Again! (with apologizes to Dr. Impossible) Foiling the box interior.

    Here are some older pics of launch boxes:

    Launch Boxes and Rocket Moments before a Launch Rocket emerging from a box Launch box with wings

  • More Rib Work

    Last night we made a new inner cell for the rib. The inner cell is a 14 meter long 50cm in diameter tube with a high pressure and low pressure nozzles attached. It’s cut and assembled from 0.7 mil sheet poly. We also added snaps to the rib access panels. The velcro was starting to pull away a bit on the last full pressure test. The snaps will help keep the panels in place.

  • Ascender Rib

    Ascender rib test article

    Here’s the partially inflated Ascender rib test article. In addition to making it bigger we added more access panels. The access panels make it easer to keep the inner cell aligned correctly when it’s being installed. It really does form a nice ellipse when fully inflated. Ascender 100 will use nine of these. Eight this size and one larger bow rib.

  • JPA News10 Segment

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  • The Reel, The Rib and The Rocket Box

    Instead of starting from scratch we decided to modify the Ascender rib from last week. We found the error and have made eight extensions to bring it to the correct size. A lot of Saturday was spent pulling seams, an eighteen foot ellipse all double seams at the perimeter and triple seamed at the joints has a LOT of seams. With that accomplished we’re started sewing back together again. Sometimes….

    The control servo was mounted on the reel down system and the next round of testing should start this week.

    On the rocket balloon launch box the bridal mount was installed. This is the structural backbone that gets attached to the balloon.

  • Vega Venus Balloon Floating in D.C.

    Tucked, unmarked, in a back corner of Smithsonian Udvar-Hazy Center hangs one of the most amazing planetary probes ever flown. I came across it on while doing the book signing there for “Floating to Space”
    It is the Vega balloon that flew in the atmosphere of Venus, well it’s the backup vehicle. The real one that flew in 1985 is still on Venus. This single mission put a lander on the surface of Venus, sent a balloon flying in the atmosphere and sent the “mothership” to intercept Halley’s Comet. All three elements of the mission were a success. Incredible.
    Vega Venus Balloon Vega Venus Balloon

  • News Story

    Here’s the link to the news story. A great big thank you goes out to Dale Schornack and all the News10 folks!!!!!
    http://www.news10.net/news/story.aspx?storyid=49811&catid=2

  • Wednesday Nights Build Session

    The team really cranked it out last night. The launch box repairs are nearly complete. We’re now modifying the attachments from a Dark Sky Station mount to a balloon mount.

    We had completely disassembled both shop ground stations to make room for assembling the Ascender ring inner envelope. By the end of the night it was all back together and talking to the test away vehicle rig.

    The JPA piece should be on TV in about an hour. We’re now entering the “JP NERVOUS ZONE” . Dale (the reporter and news anchor) always does a great job, but the butterflies still do their thing in the stomach.

  • Please Stand

    Just a thought before the election.

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