The Breakroom > The Water Cooler

Gives new meaning to vert take off and landing

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Bernd:
Looks like those guys could take off and land on a runway's width.

Kind of reminds me of the joke about the Polish pilot's after landing there plane.

Pilot: "Boy that sure is a short runway"
Copilot: "Ya, but look how wide it is"

Running, Ducking and Hidding
Bernd

DICKEYBIRD:

--- Quote from: tinkerer on December 22, 2009, 09:17:09 PM ---Dense air, high pitch prop and lots of HP. The landing is fantastic.

--- End quote ---
Actually a low pitch prop, yes?

tinkerer:

--- Quote from: DICKEYBIRD on December 23, 2009, 11:34:55 AM ---
--- Quote from: tinkerer on December 22, 2009, 09:17:09 PM ---Dense air, high pitch prop and lots of HP. The landing is fantastic.

--- End quote ---
Actually a low pitch prop, yes?

--- End quote ---
Actually not. The higher the pitch, the more bite it takes in the air and the more HP it requires to grab a bigger bite.

DICKEYBIRD:
Respectfully, low (also called fine) pitch generates more thrust at low airspeed, used for accelerating quickly up to take-off speed and for decelerating quickly.  High (also called coarse) pitch is used for maximum speed or for maintaining cruise speed at reduced engine speed for economy, yes?

tinkerer:
I just saw the reply. You are correct, the low pitch does accelerate quicker. My experience is with constant speed units that control the engine speed with the pitch of the prop and when power is added the pitch increases. My thoughts were that these STOL's have a lot of HP and therefore can push a lot more air. But, wing design is probably the most important part of the equation.

I looked up the N number of the one in the foreground and it is an experimental with a lycoming 0-360 180HP.

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