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  1. keen9

    can't stall this plane..

    No, it needs to be on the top (which yes you won't see in a a152), but the point is that feeling a sudden break does not mean that the wing is not stalled.
  2. keen9

    can't stall this plane..

    Tape some yarn on you wing about 1/3 of the way back, and do it again. You'll see that you are stalled.
  3. keen9

    Battery Jump Packs

    Amps will crank the engine while mAh will charge some other battery or give you more attempts.
  4. keen9

    ATC Training Increasing?

    Heh, that is a frequent occurrence for me on landings. I've trained myself to not answer, then call "say again" when I'm done landing even if I know what they said since I should be ignoring it. Train me not to listen, and the controller might learn to wait when it happens enough. I assume they...
  5. keen9

    Engine out practice

    The prop accelerates between engine peak compressions based on the shape. With less momentum to make it through the compression, a low inertia prop will be stopped easier.
  6. keen9

    Engine out practice

    Metal (Sensenich presumably), or wood, composite, Catto, etc? The mass of the prop is what would help keep it windmilling. From you're description, something <60Kts is where it stopped then, right?
  7. keen9

    Do you really understand Wing lift?

    The big nose of a truck at relatively low speeds is not the same the side of an airplane. As for the physics, like this whole thread, everyone wants to understand these things in simple terms (aka not a college degree), but they are not that simple. To do the math on the venturi, you need to...
  8. keen9

    Do you really understand Wing lift?

    Newton was all about gravity https://en.wikipedia.org/wiki/Gravitational_constant Gravity is a force. Force = mass x acceleration. "Weightless space" doesn't really exist, but when we talk about weightlessness, we mean that in some relative environment like a space capsule, everything has...
  9. keen9

    Do you really understand Wing lift?

    You have a lot of stuff around the venturi that would affect the flow. To do a better test, you need the venturi far in front of the truck (nosebooms are generally 4 to 6' for a comparison), and you need to not have stuff in front of it for sure.
  10. keen9

    Noob

    Just a note on Rod Machado’s book: It is very good, but it is also extremely thorough so much so that it can be overwhelming. You don't have to absorb every piece of knowledge in his book to get a great score on the written.
  11. keen9

    New Lockheed Contract

    Well crap. Now Santa is probably going to have a ground abort.
  12. keen9

    Flying in Hawaii

    Flew from Maui pretty much the same route Gary posted above. I flew with an instructor so I didn't need a checkout, and he was a great tour guide in addition of the cool tips like the easy climb over Molokai (windward side of 3000' cliffs). There are some big winds, but they are constant so the...
  13. keen9

    St Louis riverfront

    Nice. Love the Blue & Orange paint job. Go Illini! Tim, he went to ALN not CPS. There is still no restaurant at CPS.
  14. keen9

    St.Louis Area Airports

    If you are already on with approach they will likely approve an arch tour without switching to CPS.
  15. keen9

    St.Louis Area Airports

    Alton has a restaurant, but is is on the NE side. Spirit (SUS) or Creve Coeur (1H0) are SW. Grab a crew car if you want to go for food. Flying past downtown and the Arch is fun. The bluffs along the river north of town are nice from the air.
  16. keen9

    Petit Jean State Park (Arkansas)

    The Petit Jean RV Fly-in is the best. PS, it is pronounced (pet - it) if you want to avoid harassment for your Yankeeness.
  17. keen9

    Simple Aerodynamics question

    fps is velocity. I suspect that the problem is SUPPOSED to be 3.4 feet per second squared, but it is not stated that way here.
  18. keen9

    Simple Aerodynamics question

    No I am not. 1) An airplane not moving has zero momentum; 2) A=F/M, doesn't matter how large a value you have for M, any positive F gives you acceleration.
  19. keen9

    Simple Aerodynamics question

    Your problem doesn't make sense. If it is frictionless, any force will accelerate the airplane.
  20. keen9

    PIREP Requested - KBLV

    Up until last fall, there were two FBOs at CPS . . . now it is really expensive. I go to Perryville, MO for fuel.
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