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Ozfergie

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Posts posted by Ozfergie

  1. Sorry I don't understand this statement.As stated by ben87r - What the Dynon does it uses the GPS it is slaved to to calculate your changing position, you TAS and your heading. From this it calculates your drift and coupled to these is able to calculate the angle of force being exerted on your aircraft to make it undergo the changes in direction. That is it calculates the wind aloft, actual, as it happens at the time. It does not use any forecasted winds or data bases. It doesn't generate any table for comparison. It's a real time event.

     

    It gives you a record if you want to write down the events as they happen I suppose ( as far as I can tell it doesn't record the winds aloft so you can download them later - allows saving and downloading a lot of parameters but I don't think it does that.

     

    Sorry I don't understand this statement.As stated by ben87r - What the Dynon does it uses the GPS it is slaved to to calculate your changing position, you TAS and your heading. From this it calculates your drift and coupled to these is able to calculate the angle of force being exerted on your aircraft to make it undergo the changes in direction. That is it calculates the wind aloft, actual, as it happens at the time. It does not use any forecasted winds or data bases. It doesn't generate any table for comparison. It's a real time event.

     

    It certainly tells you the degrees and velocity of the wind on the screen. I guess it gives you a record if you want to write them down as they happen I suppose ( as far as I can tell it doesn't record the winds aloft so you can download them later - allows saving and downloading a lot of parameters but I don't think it does that.

    I guess my point was that there are several variables in the constant calcs done by Dynon/Ozrunways etc., changes either of the variables will cause the unit to recalculate - so without a record to compare, the wind assumptions that you have used could be more accurate than you think but the TAS and heading (not held) could be the bigger variant.

     

     

  2. Also really interesting - are you techy enough to know how the Dynon gives you this info?

    OK - so just like all the other GPS devices - it doesn't actually give you a record of the actual winds aloft to compare to either the area winds or another figure that you may have used for planning.

     

     

  3. Don't trust any of them. Pick any of them for your planning but don't rely on it.The GRIB winds are still guesstimates. They calculate the expected winds between one side of the big area and the other. But instead of giving one for the whole area they break it up into 5 or 2.5 degree squares. Then they calculate the estimated wind at the centre of the small square and give you that. All sounds fine but it still is entirely dependant on if they have it correct in the first place.

     

    I have been using a Dynon D180 for about 10 years which gives true wind aloft as you fly it. Comparing the actual to the forecasts gives some surprising results which show you should not get too worried about any of the forecasts winds. Ok if they re forecasting cyclonic winds etc then yep take note but as far as trying to compare say 10 knots vs 15 or 20 knots - don't get too stressed over small amounts.

     

    Have done multiple long trips around Oz ( 10 days at a time with anything up to 6 or more hours in a day ) every year for over 15 years plus lots of standard local flying. Have done some where not a single forecasted wind for the entire trip was correct.

     

    The good thing about using iPads/ozrunways or avplan ( and having multiple devices in the average aircraft) is that the planning exercise is really just an exercise now. You will find you will be modifying the plan according to the real world so often that the planning will mostly be redundant.

    Also really interesting - are you techy enough to know how the Dynon gives you this info?

     

     

    • Winner 1
  4. Wow... so many options and choices. Thanks for the feedback guys.The recreational flying headset for $150 looks pretty good. Anyone else have experience with this headset? I guess I'll see where the aviation bug takes me before I spend too much money on headset like a bose a20.

    I don't like to be negative - but I purchased a set from Rec Flying Pilot Supply shop as my first set - the wiring around the boom became degraded after about 4 hours and became unservicable - I attempted to contact them via the website and on here about refund/replacement/repair and had no response - so I picked up a DC set on E-bay and they are great. There is no comparison between the two in my opinion.

     

     

    • Helpful 1
  5. We discussed this on another thread - but I would appreciate anyone else's feedback/opinion.

     

    I passed both RPL with Radio, Controlled Aerodrome and Controlled airspace ratings and RAAus with HF, NW and R endorsements.

     

    The question was/is - do I need to complete XC Navs in both classes or can I just complete them in one and they will transfer across (either way)?

     

     

  6. You only need to do an AFR, or if you havent flown a GA plane before, you will need to do a conversion. That should take about 3-5 hours depending on your skill setIf you have cross country endorsement, everything will be carried over.

    You will need to do 2 hours under the hood (instrument flight time) as well

     

    One of those hours may be in a registered flight simulator. but I recommend the real thing

     

    I have done mine and it was great. Such a powerful learning tool

     

    They even made me do an English language test to get my radio endorsement, even though I have radio on my RAA Certificate

     

    It must be becoz I dont talk like wot proper people talk like

     

    Bryon

    Hi Bryon,

    I passed both the RPL and RaAus in June - my assumption was that I would need to do the full cross-country endorsements in both classes - am I mistaken and can simply do them with RaAus and then carry them across to RPL (or visa versa)?

     

     

  7. Interesting article in the Oz today by veteran Captain Byron Bailey where he thinks a bounce was the start, followed by use of the TOGA switch on the throttle lever. His theory being that the first touchdown caused the flight computer to disable the auto-throttle because it "thought" they were on the ground and by the time the flight crew realised that the engines were not spooling up, it was too late for the manual override on the throttles to deliver enough thrust for the go around.

     

     

    • Informative 1
  8. I think you will have a much better idea after you have taken your first lesson with the instructor that you choose first up.

     

    If you feel comfortable with the aircraft that is available and the instructor, discuss your "goals" with them - I'm sure that they will try to work with your ambitions.

     

    Remember that you will be spending $5k-$6k, (RPL) so choose the school/CFI carefully and shop around for the best fit for you.

     

     

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