[NSRCA-discussion] Weather Vane or Crab

[george w. kennie]

Nat,
You forgot to add................"and for the better". ;>)



----- Original Message ----- 
From: "Nat Penton" <natpenton at centurytel.net>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Sunday, October 14, 2007 2:19 PM
Subject: Re: [NSRCA-discussion] Weather Vane or Crab


> Georgie
> When you cross the Mason Dixon line things change
>
> ----- Original Message ----- 
> From: "george w. kennie" <geobet at gis.net>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Sunday, October 14, 2007 12:07 PM
> Subject: Re: [NSRCA-discussion] Weather Vane or Crab
>
>
>> Marty,
>> The problem I have with the "unconcious control input" theory is,
>> ....there
>> are hundreds of "Sport" flyers in all 3 of the local clubs that I belong
>> to
>> that subscribe to the idea that the rudder is meant to be used only when
>> the
>> plane is on the ground. One of the guys at my #1 field places his thumb
>> against the base of the throttle stick as soon as the plane is safely in
>> the
>> air and the throttle and rudder control are never touched "til the wheels
>> are back on the ground. Despite the fact that these guys never even
>> breathe
>> on the rudder, their planes exhibit the same fuselage rotation into a
>> cross
>> wind on vertical uplines that my planes do.
>> G.
>>
>>
>>
>> ----- Original Message ----- 
>> From: <moleski at canisius.edu>
>> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>> Sent: Sunday, October 14, 2007 4:40 AM
>> Subject: Re: [NSRCA-discussion] Weather Vane or Crab
>>
>>
>>> Winston E Batchelor wrote:
>>>
>>>> Thanks George
>>>
>>>> I really didn't want to argue with Doug.
>>>
>>>> ... I was in no way experienced enough to make a correction. IN fact it
>>>> alomost
>>>> blew me onto the shoulder of the road ...
>>>
>>> I suspect that you experience on the bike and other people's experiences
>>> with weathervaning of pattern planes are examples of "tacit knowledge,"
>>> an idea developed by Michael Polanyi.
>>>
>>> The vast majority of people do not know what rules they are following
>>> when they ride a bike.  They acquire the skill tacitly (silently) and
>>> don't even realize what they themselves are doing to maintain their
>>> balance.  The corrections are quick and intuitive, beneath the level
>>> of consciousness.
>>>
>>> The trick that we use to maintain our balance is to steer into
>>> a fall.  If we're falling to the right, we swing the bars to the
>>> right.  That causes the frame to straighten up.  It may go past
>>> neutral and start falling to the left.  If so, we swing the
>>> bars to the left.
>>>
>>> This is very evident at super slow speeds.
>>>
>>> To disrupt our balance so that we can make a turn, the
>>> first thing we do is to turn AWAY from the way we want to
>>> go.  To initiate a right-hand turn, we swing the bars to the
>>> left, which causes us to start falling to the right; then
>>> we swing the bars to the right to stop the fall, but not
>>> so far to the right that we come upright--we lean into
>>> the turn.  When it's time to come out of the turn,
>>> we pull the handle bars more to the right, which
>>> throws us toward the left and causes the frame to
>>> come upright.
>>>
>>> Video of robot motorbike in which the designer briefly
>>> explains the principle:
>>>
>>> http://www.youtube.com/watch?v=XOgkNh_IPjU&mode=related&search=
>>>
>>> In the case of perceived "automatic compensation for the
>>> wind," I suggest that people are setting the groundtrack
>>> for the plane without even knowing that they are doing it.
>>> When they get the plane tracking straight across the ground,
>>> it will be properly yawed into the crosswind.  It is
>>> the pilot who achieves the balance between the force of
>>> the wind trying to carry the plane off the line and the
>>> force needed to compensate for that which comes from
>>> yawing the plane into the wind.  It happens so fast and
>>> is so natural that people think the plane is doing it--or,
>>> in the case of the wind unsettling your balance, you thought
>>> that the motorcycle itself is doing the balancing act.
>>>
>>> Marty
>>> _______________________________________________
>>> NSRCA-discussion mailing list
>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>
>>
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