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Romeo Juliet Whiskey

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Everything posted by Romeo Juliet Whiskey

  1. Romeo Juliet Whiskey
    Thanks Kevin...makes a lot of sense.
  2. Romeo Juliet Whiskey
    You are correctGarfly but its highly simplified. In a straight and level stall the plane is still generating substantial lift (albeit less) and large amounts of drag. Both these factors actually try to pitch the nose of the high-wing plane upwards. Why doesn't it? As a couple of others have pointed out, the centre of pressure shifts aft causing a pitch down moment. In addition, the change in relative airflow due to loss of lift, means the airflow strikes underneath the tailplane at a higher angle adding to the lowering of the nose. At least that's my understanding from reading all these comments:) I'll be stoked if this question is asked in the BAK exam Im doing next week... but I doubt it.
  3. Romeo Juliet Whiskey
    That's a really good explanation and makes sense.... A diagram would have helped though
  4. Romeo Juliet Whiskey
    Thanks DJP, I've read all the fly better books except the first one so I'll have get onto that one. I love how the author thinks outside the box with his teachings. Highly recommended!
  5. Romeo Juliet Whiskey
    Yeah thanks Nev. Just Google them. Wow, didn't realise the main wing was still producing significant lift after it stalls. You kind of assume when the wing stalls it looses most of its lift.
  6. Romeo Juliet Whiskey
    That's really interesting DWF. I wonder if there is a similar graph that shows the lift vs AoA, especially after the critical angle is exceeded
  7. Romeo Juliet Whiskey
    Ahhh... that makes sense. So the wing is still producing lift after the stall which should create a nose up moment. But because the lift moves further aft it creates a bigger moment force (even though there is less lift) than just before the stall and thus causes the nose to drop. Thanks :)
  8. Romeo Juliet Whiskey
    Hey Pearo, love your drawing! You have my talent there :) The tailplane should be generating a downward force not upwards though. See post #8.
  9. Romeo Juliet Whiskey
    Yes but doesn't the tailplane create negative lift?. At the point of stall this tailplane with the elevator up is trying its hardest to pitch the nose up. Thus, if the tail is lifting (in the negative sense) and elevator up and everything is falling then the nose should pitch up. Check out the diagram below at look at the moment arms acting around the centre of gravity.
  10. Romeo Juliet Whiskey
    Isn't the tail with the elevator up (stick back) at the point of stall creating a nose up tendency. If the tail is still creating lift (or downward force) why would this cause the nose to drop? Its the one thing that is preventing the nose from dropping. Doesn't make sense.
  11. Romeo Juliet Whiskey
    That kind of makes sense but is that valid at the point of stall - the plane is not necessarily descending yet you still get a pitch down tendency. What happens in a climbing stall? The plane could still be climbing due to inertia but still produce a nose down tendency when stalling?
  12. Romeo Juliet Whiskey
    Flying a high-wing plane like the Jabiru, why does the nose pitch down at the point of stall? The obvious answer is there is a loss of lift and the heavy nose of the aircraft makes the whole plane pitch down. But aerodynamically it doesn't make sense to me. Let me explain: Given the lift moment arm is behind the CoG, any loss of lift due to a stall would cause a pitch up tendency wouldn't it? In fact, in a high-wing aircraft the increase in drag at the stall would also create a pitch up tendency. I presume all other forces (thrust, weight and tailplane) acting around the CoG remain the same at the point of stall (the tailplane is designed not to stall so the elevators remain effective when the wing stalls). Hopefully someone can point out where I'm going wrong here. Rich
  13. Romeo Juliet Whiskey
    That makes sense... Cheers!
  14. Romeo Juliet Whiskey
    Its interesting when studying the Carburetor Icing Probability Chart that the probability of icing at some point of relative humidity decreases as humidity increases. In fact, if its 28 degrees outside, we are on decent and the relative humidity is 50% then we have a moderate to serious carby ice. If the relative humidity suddenly jumps up to 90% then there is only a chance of light ice. I was under the impression that the higher the relativehumidity, the more probability there is of carby ice? The CASA probability chart says otherwise.
  15. Romeo Juliet Whiskey
    I remember in one of my lessons. after veering off to the left upon touchdown 3 times in a row, I said to the instructor "This next landing I'm going to deliberately put in more right rudder than what I think is necessary and see if the plane pulls to the right upon touch down". Sure enough rolled straight down the runway .... been landing straight ever since!
  16. Romeo Juliet Whiskey
    Yeah Bruce is one cool cucumber. I hate that damn left side of the runway! If I land to the right I'm much happier Agree about the Jab... I don't recall landing the Piper tomahawk as challenging as the Jab. You really have work those rudder pedals.
  17. Romeo Juliet Whiskey
    We all love a good landing, even better capturing a video of it and sharing it to the wider community. If your a student pilot and feeling disheartened by watching everyone else's nice landings, then this video might give you a bit of laugh. It shows the reality of learning to fly - lots of bad landings. Im talking about bounced landings, ballooning, veering of the runway! Would love to hear about or watch a video of your bad landings and any lessons you learnt from them. Rich
  18. Romeo Juliet Whiskey
    Hi Ben, please let us know the results of your survey and thesis! I think one of the biggest criticisms with home simulators was that people tended to fly using the instruments gauges rather than visually due to technological limits at the time. This taught people some bad habits that transferred over to their real life training. With TrackIR and now the arrival of virtual reality headsets this is no longer the case. I have an oculus rift and the immersion and realism is out of this world. Add a few add-ons such as your local airport and a $40+ airplane and you have a very realistic simulator. Personally, I believe if you want to get the most out of your training and become a good pilot, as Rick stated above, then I would recommend having a home simulator with trackir or VR headset and a GoPro camera to review your flights before and after each lesson. Rich
  19. Romeo Juliet Whiskey
    But for a while... But I might have another look. Thanks Parkway.
  20. Romeo Juliet Whiskey
    Another couple of questions from the syllabus I can't seem to find the answer to in my books. i) State why the aeroplane tends to overbank in a level and climbing turn and not in descending turns. The standard answer is: 'the outer wing is travelling at a faster speed, more lift and thus roll. In a descending turn this rolling effect is somewhat cancelled out by the higher AOA of the inner wing'. My question is wouldn't the inner wing also have a higher AoA in the climbing turn, and therefore reducing the rolling affect caused by the faster outer wing and not causing overbanking tendencies? ii) State the effect of aileron drag on the turning performance at low speed. I'm aware of adverse yaw created by drag of the downward aileron but not sure how this equates to turning performance? I thought turn performance at a particular speed just depended on available 'g'. Not sure exactly what they are looking for with the statement in bold.
  21. Romeo Juliet Whiskey
    Ive got a skinny instructor ... not sure if it made much difference
  22. Romeo Juliet Whiskey
    Thanks Bruce. I was holding on to that stick pretty tightly Looking forward to more solo time. It's a different feeling when the instructor is not there. Surprisingly I felt more relaxed up there by myself.
  23. Romeo Juliet Whiskey
    Thanks David. Its awesome feeling flying by yourself. That sense of freedom that you get is probably the main motivation to fly for me.
  24. Romeo Juliet Whiskey
    That day has finally come when the instructor hops out of the aeroplane and lets me take the plane up in the air for a circuit, by myself! All I have to do is pass the solo check flight and I'm good to go: Very happy with how far Ive come...it was only 4 or 5 lessons ago when my landings were all over the place. The Jabiru is harder to land compared to her GA counterparts, but much rewarding and satisfying when it all clicks and you start to nail those landings. Can't wait for the next stage in my training. So much more to learn ... thats what I love about flying :) ABOUT ROMEO JULIET WHISKEY: I'm a student pilot learning to fly in my spare time. I originally received 30 hours of flying instruction 17 years ago and now I'm back in the cockpit and learning how to fly all over again. Currently flying out of Wollongong (YWOL), Australia in light sport aircraft such as the Jabiru and Pipestrel alpha with Fly Illawarra: Fly Illawarra: Fly Illawarra Jabiru aircraft: Home - Jabiru Aircraft & Engines Australia
  25. Romeo Juliet Whiskey
    Glad you like them GraemeK. Don't worry, there will be more coming! Im pretty sure my next lesson will be my solo flight ;) (Im a couple of weeks ahead of the videos)
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