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djpacro

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Everything posted by djpacro

  1. djpacro
    Suggest that you spend some time with glider pilots. My only experience is with the old Airtourer which has springs for pitch trim therefore springs give it additional stick force gradient and stick force per G. Husky also has springs for its trim system with its joystick. Some good general info on stick forces in NASA CR-1975 Riding and Handling Qualities of Light Aircraft - A Review and Analysis.
  2. djpacro
    "spinning" was prominent in one report but not even mentioned in the other. If I assume both are correct then perhaps spinning up higher and recovered from the spin, anyway, we will know more before long, just that I take a keen interest in spinning having known a few who were killed near that spot.
  3. djpacro
    Channel 9 video.
  4. djpacro
    sad to say, nope.
  5. djpacro
    They're supposed to be 500 ft AGL, my guess is that they have no idea of the elevation at that road junction.
  6. djpacro
    right in the middle of the aerobatic area, over the years a number of aircraft have spun in nearby you need to read the fine print .... photo caption
  7. djpacro
    You mean the fake ABC news which is where I see those words following your link.Text at No Cookies | Herald Sun is consistent with discussion with colleagues.
  8. djpacro
    And if subject to CASA's annual limit on flying hours it is not a lucrative salary either way.
  9. djpacro
    You're paying $100/hr for the time the engine is running so time on the job is maybe twice that much plus, at a school, the instructor only gets a fraction of that.
  10. djpacro
    Try Chapter B2 of Bruhn's book Analysis and design of flight vehicle structures by E.f Bruhn
  11. djpacro
    The Poly-Fiber Manual gives detailed estimates for a variety of aircraft, the J-3 for example: 10 gals of poly-brush, 11 gals of poly-spray, 6 gals reducer etc. Total weight of the fabric and coating system using 1.7 oz poly-fiber was 33 lb = 15 kg. They go on to mention a reduced-coat (refer the cautions re UV etc) ultralight (their example is about 2/3 the size of a J-3) system which would total about 12 lb or 5.5 kg. By comparison the original J-3 in cotton and dope was 75 lb. In 2.6 oz Poly-Fiber it is 43 lb.
  12. djpacro
  13. djpacro
    That is what it states on that magazine's website for the particular set of numbers they are quoting. You'll probably find that a typical empty weight is higher than quoted by the magazine however.
  14. djpacro
    Beautifully flown.
  15. djpacro
    Talk to Bleve97 and feel free to give me a call about who does what to whom at Moorabbin. I don't do stuff like this any more.
  16. djpacro
    When I visit Redciffe and do some aerobatics take a guess at my inbound and outbound tracks and altitudes plus consider which frequency I would be on.
  17. djpacro
    Might be worth looking at how the Christen Eagle kits are put together https://www.aircraftspruce.com/catalog/pdf/FrankC.pdf Been around for many years but a lot of effort was put into development of the kits. eg first step in the manual was to unpack the blade to enable you to open the first kit. Still available but not cheap! Info on kits at https://aviataircraft.com/wp-content/uploads/2016/01/Aviat_Eagle_Kit_Price_List_2015.pdf Builders get comprehensive construction manuals instead of plans.
  18. djpacro
    Seems to me that only a fraction of airproxes are reported.
  19. djpacro
    Mu guess is that Ian wouldn't have a Jab engine
  20. djpacro
  21. djpacro
    nothing to do with CASA
  22. djpacro
    I take little interest in what the BOM forecasts for Melbourne. After checking with them this morning I decided not to go flying (for aeros) but early arvo there were blue skies with AWOS stating scattered at 4700. It happens this way too often.
  23. djpacro
    The International Visitors Tent is a good place too.
  24. djpacro
    CofA reqt only via airworthiness design requirements, if applicable ... eg FAR 23 and aerobatic aircraft are not exempt.
  25. djpacro
    I flew with him at Lovely Banks around that time too. Saw him last year at Casey Field reunion.
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