damed if I know, but what I do know its good to ask a of of questions

It common for the layman to want simple answers for complex issues which can 
lead to doing an ineffective thing,

In this case having the string in the centre or a few degrees to the outside, 
it may in the overall scheme of things make not discernible difference

For example if the glider settles and it easier to maintain a steady climb with 
a few degrees of offset yaw, it might be less drag than futzing with the 
controls (creating more drag) to keep in the centre. Additionally putting focus 
on the string means that the pilots mental focus is not on something else (like 
staying in the core or not adjusting to being blown out by horizontal gusts), 
hence there is always tradeoff. If there is gain, it might be so small as to 
not warrant the attention tax.





Richard Frawley
[email protected]

We do not inherit the earth from our ancestors, we borrow it from our children







> On 17 Jan 2019, at 9:54 am, Mike Borgelt <[email protected]> 
> wrote:
> 
> So how about answering the questions?
> 
> 
> Mike
> 
> At 08:51 AM 1/17/2019, you wrote:
>> and what is the expected differential (gain/loss) with say a 10degree slip 
>> indication variation, given all the other factors that determine climb rate.
>> 
>> This might b able to be worked out mathematically given the airflows angle 
>> on the wing and fuselage drags differences
>> 
>> I suspect that are several aerodynamic factors would have to be considered, 
>> especially given the the thermal core is dynamic.
>> 
>> A question for modern designers perhaps, especially when all aviation design 
>> is a trade off
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> Richard Frawley
>> [email protected] <mailto:[email protected]>
>> 
>> We do not inherit the earth from our ancestors, we borrow it from our 
>> children
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>>> On 17 Jan 2019, at 9:43 am, Mike Borgelt < [email protected] 
>>> <mailto:[email protected]>> wrote:
>>> 
>>> At 07:36 AM 1/17/2019, you wrote:
>>>> Perhaps the more important question is how to you tell if one technique is 
>>>> better than another. What is a useful baseline?
>>> 
>>> 
>>> 
>>> 
>>> Climbing better than the other gliders is the test but what if everybody is 
>>> using the same less than optimum technique?
>>> 
>>> Mike
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>>> On 17 Jan 2019, at 7:16 am, Mike Borgelt < [email protected] 
>>>> <mailto:[email protected]>> wrote:
>>>> 
>>>>> When circling in a thermal, do you 
>>>>> a) keep the string centered
>>>>> b) fly with it pointing to the outside of the turn
>>>>> c) why?
>>>>> 
>>>>> 
>>>>> Your technique may not be doing what you think it is.
>>>>> 
>>>>> Mike
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> Borgelt Instruments - design & manufacture of quality soaring 
>>>>> instrumentation since 1978
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>>> Borgelt Instruments - design & manufacture of quality soaring 
>>> instrumentation since 1978
>>> www.borgeltinstruments.com <http://www.borgeltinstruments.com/>
>>> tel:   07 4635 5784     overseas: int+61-7-4635 5784
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>> <http://lists.base64.com.au/listinfo/aus-soaring>Borgelt Instruments - 
>> design & manufacture of quality soaring instrumentation since 1978
> www.borgeltinstruments.com
>  <http://www.borgeltinstruments.com/>tel:   07 4635 5784     overseas: 
> int+61-7-4635 5784
> mob: 042835 5784                 :  int+61-42835 5784
> P O Box 4607, Toowoomba East, QLD 4350, Australia
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