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APenNameAndThatA

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Everything posted by APenNameAndThatA

  1. APenNameAndThatA
    By your definition, if I am forcing a box steadily across the floor, I am not exerting a force on it because it is not accelerating. I think that we can agree that that is wrong. Also "To keep the box moving you have to apply a force that is greater that Friction force." Actually, the same as the friction force. If it was greater than the friction force you would accelerate the box. I also think that it is poor form to accuse someone on knowing f-ing nothing when you repeatedly state that something with a mass of 0.3 kg has a weight of 3 kg.
  2. APenNameAndThatA
    So, we can agree, finally, that something with a mass of 0.3 kg does NOT have a weight of 3 kg?
  3. APenNameAndThatA
    I have to say that I think that it is poor form to have everyone come up with interesting answers to your question and then decline to think about them because it turns out that the only thing that you were interested in was that sine 45 = 0.7.
  4. APenNameAndThatA
    One more question: what is "kilogram-weight"?
  5. APenNameAndThatA
    So OME, you've got some great info about what happens to the lift of the wing when someone is doing a hesitation roll. Would you care to summarise it for us?
  6. APenNameAndThatA
    Duly noted.
  7. APenNameAndThatA
    China, I believe
  8. APenNameAndThatA
    It’s not easy when you’re really clever and no one believes you.
  9. APenNameAndThatA
    I am surprised at that, to say the least. Got a problem with a plane? Hire a test pilot to examine it. Simples. Or am I missing something?
  10. APenNameAndThatA
    In the video, the first stall he loses 500 feet, and the second one 400 feet. And a wing drops about 45 degrees. Not good.
  11. APenNameAndThatA
    400 feet by a *factory* pilot AND the stick forces are wrong!? And it’s legal to fly at 500 feet over unpopulated areas, right? If the above is even half true it does not look like CASA will be on a witch hunt no matter what they do.
  12. APenNameAndThatA
    I would ask CASA. When I asked then about landing in the desert they were sensible but a tiny bit non committal. I would avoid the forgiveness rather than permission approach. I would test on the ground and in the air. And check that the smoke is visible from the ground. I would have a separate person to operate the canister so that the pilot can just fly the plane. I would use at least two canisters in case one failed. I would have predetermined, written minimums that someone would hold me to because if you are the gender reveal centre piece the get there itis will be intense. Make sure the party host has a canister of there own in case you cannot fly that day. Don’t use a system to hold the cannisters outside the airplane to get around rules about attaching stuff to the airplane. You might drop the canister or fill the airplane with smoke. DISCLAIMER I have 119.1 hours and know *nothing* about this topic.
  13. APenNameAndThatA
    And this from someone who says that they do not think that they come here to teach people. " I just try to expose general misunderstandings."
  14. APenNameAndThatA
    "Prior to beginning the roll, the aircraft is flying with its wings parallel to the Earth's surface." Wrong. The two planes will be at the angle of attack (assuming that the manoeuvre starts with the airplane straight and level, which is a reasonable assumption. By "planes" I mean the flat plane of the earth's surface and the plane of the wing, defined by the theoretical plane formed by the chord and the span of the wing. Actually, on reflection, even that is untrue, unless there is no dihedral. Airplane wings with dihedral are not parallel to each other so there is no chance that they will be parallel to the surface of the earth.
  15. APenNameAndThatA
    And this, "Yes. But first I want to get people to really think, and to question what they believe." The idea that you don't think you are here as a teacher is laughable.
  16. APenNameAndThatA
    Also, as someone might, and might not have said, if a plane does an aileron roll, the AoA will change unless the roll axis is exactly parallel to the angle of incidence of the wind. I don't think you can guarantee that. For example, in an Extra, before you do an aileron roll, you point the nose up a bit. I expect that the nose is up a bit during the whole aileron roll. That means that when inverted the wings will be providing negative lift (lift against gravity) and when the aircraft is on a knife edge, the AoA could be zero. That would mean that at 45% the AoA would have decreased a little. Also, a particular pilot in a particular aircraft, might adjust the elevators as they complete the roll. So, there is every reason to believe that the wing will be producing less lift during the roll. Your answer assumes that the AoA is the same at 45° bank as at 0° bank, which is wrong.
  17. APenNameAndThatA
    Can I show you where you purported to be a teacher? How about this quote. "I really do give up. No matter how much I try to clarify and have people's attention hone in on the point I'm making they have to go past the point I want to stop at." If I recall correctly, you complained that by posting here you were casting your pearls before swine and giving what is holy to dogs. Correct me if I got the bible quote wrong.
  18. APenNameAndThatA
    This is ludicrous. You are presenting yourself as a teacher on this forum when you believe a) That a spirit level can be used to measure angle of attack and b) something with a weight of 3 kg has a mass of 0.3 kg. It would be fine, except some people will believe what you write. The more well-respected posters to this forum should not stand for it.
  19. APenNameAndThatA
    Superb boots.
  20. APenNameAndThatA
    I was sitting on the aluminium bench that is built into the plane. Maybe there is more to this than I am aware of. Also, i was wearing a helmet. Not that it adds too much height.
  21. APenNameAndThatA
    Why do you keep moving?
  22. APenNameAndThatA
    I know of someone who copied a prop. They had a cutting wheel and a guide wheel of the same diameter attached to something like a jig and used an existing prop to make a new prop. Kind of like a giant, 3D pantograph. At least that's what they said they did.
  23. APenNameAndThatA
    What’s the black box to the left of the panel. My Foxbat has the same space and Im wondering what to fill it with
  24. APenNameAndThatA
    They will be great value either way. Just make sure you don’t stall.
  25. APenNameAndThatA
    Polish. If anyone wondered
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