LS-3a Polar Info. Wanted.

[Eric Nielsen]

I've recently purchased an LS-3a. My P.O.H. does not include a Polar Curve Graph, so I'm having difficulty finding difficulty in finding speeds for Min. sink, speeds to fly in Headwind/Tailwind, and in sink. Any Help is appreciated.

[[email protected]]

On Wednesday, January 20, 2016 at 12:05:50 PM UTC-5, Eric Nielsen wrote:
> I've recently purchased an LS-3a. My P.O.H. does not include a Polar Curve Graph, so I'm having difficulty finding difficulty in finding speeds for Min. sink, speeds to fly in Headwind/Tailwind, and in sink. Any Help is appreciated.

The Johnson flight tests, available from the Soaring magazine archives, have the information you need.
Good Luck
UH

[Charlie M. (UH & 002 owner/pilot)]

On Wednesday, January 20, 2016 at 12:05:50 PM UTC-5, Eric Nielsen wrote:
> I've recently purchased an LS-3a. My P.O.H. does not include a Polar Curve Graph, so I'm having difficulty finding difficulty in finding speeds for Min. sink, speeds to fly in Headwind/Tailwind, and in sink. Any Help is appreciated.

Johnson test... http://www.postfrontal.com/PDF/prove_alianti/LS3a.pdf

Better copy on SSA.....

[Dan Daly[_2_]]

On Wednesday, January 20, 2016 at 12:05:50 PM UTC-5, Eric Nielsen wrote:
> I've recently purchased an LS-3a. My P.O.H. does not include a Polar Curve Graph, so I'm having difficulty finding difficulty in finding speeds for Min. sink, speeds to fly in Headwind/Tailwind, and in sink. Any Help is appreciated.

Paul at Cumulus Soaring has a polar page including LS3. http://www.cumulus-soaring.com/polars.htm Excellent resource.

You can cross-check the LS3a polar to make sure it is close enough (it should be).

[Gianni Isotope]

I'm not sure if it is helpful, but the uploaded files collection of the LS gliders forum in Yahoo Groups (https://groups.yahoo.com/neo/groups/LS-gliders/info) has copies of polar graphs from an LS-3 (not 3a) POH.