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Old 05-22-2012 | 10:30 AM
  #1559  
Zor
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From: Ontario, ON, CANADA
Default RE: Building a Dynaflite Super Decathlon


ORIGINAL: brenthampton79

It is easier and safer to land a tail dragger in a crosswind than a tricycle. The front wheel of a tricycle does not like misalignment when it contact the surface.

above is what zor typed and im curious as his reasoning on this statement, he is correct as to the side slipping to corectly land an aircraft as that is one of the basis you are taught as a flight student before you solo, whether it be a taildragger or nose gear aircraft.
Hi ... brenthampton

Here follows my reasoning for fullsize airplanes and for models.

Full size
Always use the nose in method with wings level if there is passengers on board.
Passengers are not used or understand the side forces existing in slipping that forces them to try to straighten out with gravity resulting in not being perpendicular to their seat. Some might be afraid not understanding what is going on.

The yaw orientation during the flare out is ok as passengers are used to a change around a vertical axis.
If any light slipping is used during the flare out, it only last very few seconds followed nearly immediatly with the plane sitting on level ground and no fear for nervous passengers.

Pilots flying full size airplanes have been trained in this procedure andlikely been tested for their dexterity during the licensing flight test.

Models
We have here a quite different situation.
Nopassengers to take care of. We can have quite a considerable amount of bankedattitude on approach and keep the nose lined up with the intended landing line.

There is however a limit to the side slip due to the increase in rate of descent that has to be stopped at flare out.That often results in improper flare out and the nose wheel of a tricycle hitting the ground first with considerable impact. Don't we see and read enough about bent nose wheel wires and damaged firewalls.

Many models do not have sufficient solid structure mounting the nose wheelto resist nose wheel first impacts.
That can be even worst if there is impact sideways as well .

A tail dragger has much more strength in its main gears.

Remember that a tricycle has the CG in front of the main gears so on touch down most model pilots do not keep the nose wheel off the grounduntil they run out of downward lift at the tail.

With a tail dragger and the CG behind the main gears it is lots easier to keep the tail off the ground (a wheel landing) until the positive lift dies out.

I am not re-opening the discussion on ground looping that has been beaten to depth previously in another thread.

I hope the above explanation is clear as to how I understand these things and why a tail dragger is easier to land in a cross wind as the flare out does not need to be as fast or as pronounced as with a trigear trying to touch down on the main gears keeping the nose wheel off the ground and let the main gears take any impact. .

Every landing should be "greased on" the main wheels. You can grease on a tail dragger on its main wheels at any speed; you cannot do that with a trigear due to the angle of attack lifting the plane off the ground.

How many straight ahead landing do you wish to do with the trigear ? Hee Hee LOL

Regards from Zor