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Thread: [BAC-Mail] Grass Field Operations

  1. #1

    [BAC-Mail] Grass Field Operations

    On Thu Oct 20 10:45 , "Mike Rellihan" sent:

    Even smooth grass fields are rougher on the airframe than is pavement.

    Make sure your landing gear cushion disks (donuts) are reasonably "fresh" (not
    all flattened out with the rubber extruding well past the metal spacers,
    with vertical cracks in the OD). This includes the nose gear. The
    difference in cushioning, and in landing impacts (and taxi/departure
    impacts), both grass and paved, is night and day. Ask someone who recently
    replaced their donuts.

    ----

    AMEN! A rough grass field convinced me to order the donuts ASAP after I got back!

    ---
    Mike:
    Hold enough takeoff back pressure to relieve the nosewheel load, but not enough
    to raise it clear. On firm turf (which is all you should be using), that will
    provide the best compromise between added acceleration drag and reduced impact
    loads on the nose structure.

    ---

    Using full aft yoke seemed to cause my '40psi' tires to dig in - VERY poor
    acceleration, until I relaxed the pull.

    ---
    Mike:
    If you are comfortable with it, adding a second notch will pop you off the ground
    earlier, when you get fast enough. Leave on one notch of flaps (or both notches
    if you used two) until you approach Vy.

    ---

    Major difference in ground run w/ two notches! Good climb with one notch (remind
    your partner to remind you about that last notch! - OR your cruise speed will!)

    ---

    I'll bet 200 ponies would help, too!

    Bill Howard
    BeechSportBill
    N1927W 1973 Sport 150
    Beech Aero Club NorthWest Region Director



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  2. #2

    [BAC-Mail] Grass Field Operations

    > in a second notch of flaps, to pop off the ground when ready,

    *** This reminds me of my Cessna 140 days - when I wanted to leave the
    ground expeditiously, I'd yank full flaps ( they were little tiny flaps,
    not like the barndoor fowler flaps in later Cessnas ) and pull the yoke
    simultaneously. The think would jump off the ground like a rabbit!

    Ernest Gann tells a neat story about flaps in "Fate is the Hunter".
    His plane had been overfueled, and he almost creamed the Taj Mahal. A
    quick application of flaps saved the plane and the building.

    - Jerry Kaidor ( jerry@tr2.com )




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