close

Privacy guaranteed - Your email is not shared with anyone.

Airplane

Discussion in 'The Lighter Side' started by okie, Aug 21, 2002.

  1. okie

    okie GT Mayor

    Messages:
    64,670
    Likes Received:
    1,546
    Joined:
    Oct 28, 2001
    Location:
    Muskogee Ok.
    Runaway Prop Job

    An Aussie doctor had difficulty starting his aircraft. It had a dead
    battery. So with ignition on, a little choke, and brakes OFF, he attempted
    to start the aircraft by swinging the prop [pretty standard procedure for
    prop job types . . . except the brakes]. It started OK. But since the
    brakes were off, the craft rolled away from him. At high taxi speed, its
    titanium blade spinning at 85% max RPM, it cleaned up about six light
    aircraft belonging to a local flying club before coming to a stop. The
    attached pics show the last aircraft attacked by this runaway airplane [I
    haven't seen more even slices in a loaf of bread].
     
  2. CBoltz99

    CBoltz99

    Messages:
    76
    Likes Received:
    0
    Joined:
    Jan 25, 2002

  3. JonnyB

    JonnyB Millennium Member

    Messages:
    35
    Likes Received:
    0
    Joined:
    Jul 15, 1999
    Location:
    Minnesota
    Of course, being the consumate 'party pooper', I have to inform you that propeller-driven aircraft have neither a "choke" nor titanium propellers.

    Gasoline-powered aircraft have primers (if carbureted) to inject fuel into the intake manifold just upstream of the intake valves. If fuel-injected, you turn on the fuel boost pump, and open the throttle to 'prime' it. Modern (post 1940, or so) carburetors have an accelerator pump, so technically, you can 'pump' the throttle while cranking the engine. If you aren't cranking the engine over, the fuel simply runs out the bottom of the carb, onto the ground. 'Tis a good way to start your airplane on fire.

    The propellers are made of wood, aluminum, or composite materials. I hate to think what a titanium prop would cost. A common, fixed-pitch metal or wood one is a couple thousand US dollars. Jet turbine blades are made of ti, though.

    Now that I've spoiled your joke, I'll get on with what I refer to as my life.

    Jon B;Q
     
  4. Darkmage

    Darkmage

    Messages:
    397
    Likes Received:
    0
    Joined:
    Mar 1, 2001
    Location:
    Purgatory, Virginia
    To follow up on JohnB's post, I saw that picture with a different explanation. Something along the lines of "Don't pick up women in your expensive private plane with the intent of getting some nookie if her husband has a brand new chainsaw."