Good call. Try adjusting the mid range polar sinking speed in 5% increments
till it fits to your specific glider. But I suspect your reserve is
dissipating because of sinking air and not exclusively because a bad glider
performance. In order to verify the number one have to fly in still air
with very sensitive instruments. Even the famous Dick Johson´s flight
evaluation have too many scatter despite Dick´s immense efforts, I think
their number should come with a confidence interval. The readers would
surprise by how much the data could vary just by the chance. Maybe some day
I ´ll try to do that.
2011/11/5 Scott Penrose <sco...@dd.com.au>
> To permanently degrade polar just enter lower numbers. Doing it via bugs
> is too arbitrary. An interface to reduce by percent against a predefined is
> ok but should not be necessary.
>
> Sent from my iPhone
>
> On 06/11/2011, at 7:04, Peter Cutting <peter.cutt...@gmail.com> wrote:
>
> I would also like to see bugs persistant (like SeeYouMobile). I also use
> bugs to degrade the polar since the polar always seems to be optimistic.
>
> Better yet, I would like to see a polar degradation control (in%) which is
> persistant and conneced to a particular polar. One would trim this in over
> a few flights. I hate seeing my reserve disipating
>
> Peter
>
> On Sat, Nov 5, 2011 at 7:56 PM, Olaf Hartmann <
> olaf.hartm...@s1998.tu-chemnitz.de> wrote:
>
>>
>>
>>
>>
>> Ramy Yanetz <ryan...@yahoo.com> schrieb:
>> >1 - I believe many (most?) of us use XCsoar
>> >mostly for 'casual' XC or OLC, and less for contest/record/badges,
>> >which means in most flights no task is set. It is not clear to me what
>> >is the recomended strategy to configure
>> >XCSoar to this most common type of flying. The most important
>> >information for the casual XC pilot is distance, direction and arrival
>> >altitude at various landout places along the course, using conservative
>> >
>> >glide angle (typically half to 2/3 of published polar).
>>
>> One alternative might be to show required l/d values for each outlanding
>> field instead of arrival height. There is a ticket for that. I think i like
>> the idea and will give it a try.
>>
>>
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>
>
>
> --
> Peter Cutting
> +46 703 580073
>
>
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--
Wladimir Kummer de Paula MD
Sarah Network of Rehabilitation Hospitals
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