Gyroscopic precession

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vanNostrum
Posts: 138
Joined: Thu Jan 16, 2020 4:08 am

Right rudder....right rudder.. :shock:



There are only 3 kind of people in this world
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Colonel
Posts: 2591
Joined: Wed Jan 15, 2020 10:02 pm
Location: Over The Runway

That's really complicated. If you ride a motorcycle, or fly an airplane, all you need to know
is that there is a 90 degree lag in the force applied to a spinning disc, in the direction of
rotation.


I'm sitting in a metal-blade prop taildragger, about to take off. The prop is turning clockwise
viewed from the rear, where I am. When I raise the tail, that's the same as pushing on the TOP
of the prop disc.

With the 90 degree lag, the prop disc going to act as if I was pushing on the right side of the
prop disc. That makes the nose go left, so I'm going to need right rudder on takeoff.

As a pilot, I don't really need to know WHY or even HOW. I just need to know WHAT something
is going to do, in response to input. It can be very useful to view something as a "black box"
with respect to outputs that result from inputs.

Engineers worry about HOW. They want to see inside the black box. That's your video's audience,
I think.

Philosophers and theologians worry about WHY. You don't need to worry about WHY. You
will sleep better at night if you don't.
Neil Peart didn’t need you to be his friend
vanNostrum
Posts: 138
Joined: Thu Jan 16, 2020 4:08 am

What a handful must have been to fly some of the WW1 fighters
like the Camel, with a 350 lb rotary engine in the nose of a 900 lb airframe
There are only 3 kind of people in this world
Those that can add and those that can't
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Colonel
Posts: 2591
Joined: Wed Jan 15, 2020 10:02 pm
Location: Over The Runway

My grandfather said that World War One biplanes were pieces of shit.

I have no reason to doubt him.
Neil Peart didn’t need you to be his friend
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