Polar numbers for Discus A

On Monday, April 11, 2016 at 12:26:20 PM UTC-7, C-FFKQ (42) wrote:
On Monday, 11 April 2016 15:11:19 UTC-4, xcnick wrote:

Nick, I'm sad to inform you that Udo died a few years ago after a lengthy illness.


That is sad.

In the Johnson article he works very hard to get to published L/D. However what struck me is how far off the manual's numbers are at the high end and he doesn't mention it.

Are many manufactures too optimistic at the fast end?

Marc
I am totaly aware of that but I don't have these numbers.
Do you know them?

At 15:00 27 April 2005, Udo Rumpf wrote:
The CAI numbers for the Discus A as per R. Johnson.

Wing loading 32kg/m^2
42.5 @ 98km/h
V 2 163km

You will have to make adjustment for your wing loading
I hope this will help.
Udo


Thanks Udo,
The Cambridge requires the wing area. Do you know that
number by any chance?

Discus A wing area :-

10.58 sq Metres
113.88 sq Feet
aspect ratio 21.3

Regards

Chris Runeckles
Discus A TOP VH -GUF


"Serge Serfaty" wrote in message
...
Can anybody tell me the numbers to enter in the Cambridge
302 for the Discus A, or where to find these numbers?
Thanks.