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djpacro

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Everything posted by djpacro

  1. djpacro
    I don’t see why it should be regarded as controversial. This site has Tutorial: loss of control in turns I recommend Skidded Turn Traffic Pattern Stall Discussion and other pages at APS for my students as well as my own material. Must go, got a full day of teaching turning stalls and spins.
  2. djpacro
    I did a bit in a friend’s 7AC many years ago, it is still around on the RAA register. I liked it.
  3. djpacro
    All 101 of those?? I can help you with a few of them.
  4. djpacro
    That would be it.
  5. djpacro
    Call Doug at The Ultimate Thrill Ride | Sports/recreation/activities | Mount Archer he has a 7ACA.
  6. djpacro
    Done, see Part 61.
  7. djpacro
    Try Linton at Propbits
  8. djpacro
    A stall warning switch on one wing is of limited value in some scenarios where it really matters. I can demo a skidded turn in one direction with my airplane - nil warning and an aggressive spin entry. In the standard practice stall it has the required warning 5-9 kts prior.
  9. djpacro
    yes, I do, I must owe you a ride in a Pitts.
  10. djpacro
    .... not Airtourer or Super Decathlon?
  11. djpacro
    RV-8 operated by Vans is one I recalled too https://www.ntsb.gov/_layouts/ntsb.aviation/brief2.aspx?ev_id=20001211X10121&ntsbno=LAX98FA171&akey=1
  12. djpacro
    A history of RV structural failures (not suggesting an issue with Vans design or manufacturing): First, a 1998 bulletin from Vans https://www.vansaircraft.com/pdf/saib_faa_rv3.pdf Others since, such as https://www.ntsb.gov/_layouts/ntsb.aviation/brief2.aspx?ev_id=20121126X24312&ntsbno=WPR13FA056&akey=1 And this one close to home https://www.atsb.gov.au/media/24397/aair200701033_001.pdf I occasionally get invited to teach people aerobatics in their RV and I take a keen interest in W&B, mods wrt spin behaviour etc before I start the discussion.
  13. djpacro
    Yes, taper plus washout and aerofoil section (especially different aerofoils spanwise). Most data around is for a steady, straight stall (without power/slipstream effects) however the stall margin distribution gives an indication of behaviour in other situations - a skidded turn, for example.
  14. djpacro
    Probably no disagreement, just a different situation. Yesterday in the mid-20s on the ground was the upper level of comfort for me in the PItts - wearing a light flying suit, big bubble over a tight cockpit with the two small air vents open wide; radiated heat from the six cylinder Lycoming through the firewall with nil insulation; passenger's feet just a few inches above the exhaust pipes.
  15. djpacro
    I didn't go to the trouble of finding out what aerofoil section etc is on the Beaver so just plucked this figure from https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19710021678.pdf A Design Summary of Stall Characteristics of Straight Wing Aircraft showing the typical effect of aspect ratio on stall margin distribution.
  16. djpacro
    I lived in Wyoming for a while (flew up to ND a couple of times), some mornings in January were -40 (no need to convert F to C)!At -10C on the ground (6500 ft elevation) in bright sunshine I’d be happy to fly xcountry under the bubble canopy with no heater cruising at 12,000 ft. Same type of aeroplane here in Oz flying xcountry at +40C is very unpleasant.
  17. djpacro
    Just had a quick look at The Spin Doctor - I like it. Good work, I will look at others while on hols at the beach.
  18. djpacro
    Composites do suffer from fatigue eg see http://journals.sfu.ca/ts/index.php/ts/article/download/276/259 Note references #3 by Gary Esson and Alan Patching, #15 by Alan plus other Melbournians such as Nick Mileshkin. Alan spent much of his life working on fatigue: starting with Mustang airframes after WW2 to the composite glider work that he did at RMIT. (I recall Alan also telling us that wood also has some behaviour which could be characterised as fatigue but really only of slight academic interest.)
  19. djpacro
    Is this it: ATC Pilots Log Book \ Skylines Aviation Supply I’ve gone electronic at https://myflightbook.com/
  20. djpacro
    and I suggest checking CO levels after any change to cooling air inlets.
  21. djpacro
    Not much different if you transfer from one GA school to another - instructors at your new school are still required to certify competencies per CASA’s MOS and the only way to do that is for you to demonstrate competency for each line item. Get your RPC and fill in a form to be granted an RPL gives you a stake in the ground but still needing a flight review.
  22. djpacro
    My airplane has an MT C/S composite prop which requires overhaul every 6 (from memory) years and has very specific instructions about blade condition requiring repairs. Hoffmann props are similar. TBO also based on hours too.
  23. djpacro
    It is not too hard to find more performance info on their website. No empty weight however so I look forward to reading what Steve writes about it in the next issue of Australian Flying before I form my opinion of it.(I have much better insults for people I know who have bought some other types.)
  24. djpacro
    Back when the DoT (before CASA) used to produce ‘P’ charts to go in the Australian-specific flight manuals they used some straightforward software to correct measured distances to ISA SL and MTOW. It then printed out those ‘P’ Charts. A camera was used and distances/heights measured off the printed photo to get distance to/from 50 ft to the ground. People standing beside the runway marked ground distances, Some years ago I ran a Uni Course which did that as a student project using some more modern tools. I might still have those notes on how to do it (consistent with FAA AC 23-8 FAR 23 Flight Test Guide). Perhaps I should develop an app and retire on the profits from sales? CASA has similar info with details at https://www.casa.gov.au/file/122726/download?token=NFLC3fMe with a further reference to FAA AC 23-15.
  25. djpacro

    Multicom

    djpacro replied to Yenn's topic in Governing Bodies

    I bought my 210 after the firmware upgrade and the dual watch function worked well (sold the airplane a few years later). New ICOM IC-A210 Released
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