Questions about diamond distance.

On Oct 8, 8:15*pm, Darryl Ramm wrote:
On Oct 8, 4:14*pm, Martin Gregorie
wrote:





On Wed, 07 Oct 2009 19:38:36 -0700, Papa3 wrote:

The geometry prevents you from having a very "flat" triangle where you
basically fly along the ridge and bounce out a few miles to make a
triangle with one very LOOONG leg and two other legs that are only half
as long. * SeeYou or other preflight planning software actually show you
how to lay out a triangle that meets these criteria.

IME it can be quite flat. By way of concrete example of a permissible
long, skinny triangle, I got Diamond Goal and Gold Distance on GRL-BSE-
EDG-GRL in 2004, which counts as an 18.9% triangle. GRL is the apex of
the triangle with BSE-EDG forming the base. Flatness: the base-apex
distance is 0.24 km. For those who don't fly in the UK, GRL is Gransden
Lodge, my home field, BSE is Bury St Edmunds and EDG is Edgehill. If
you're curious about the geometry, the whole story including maps, is
he

http://www.gregorie.org/gliding/300km/040625.html

Since this was acceptable in 2004, has the definition of an acceptable
triangle changed since?

--
martin@ * | Martin Gregorie
gregorie. | Essex, UK
org * * * |

Again read my earlier comment. FAI triangle geometry does NOT apply to
badges. This is not a recent change.

This thread needs to die.

Darryl- Hide quoted text -

- Show quoted text -

My humblest apologies to Darryl and any others I may have harmed with
my ill-guided attempt to help Scott out. I got carried away (having
some fun) with the descripton of the rules. Of course flat triangles
are not a problem for badges, only for records. Scott, I offer a
full refund on my consulting fees.

Of course, the real point of excerpting rules was to point out that -
yes- the rules actually DO answer all of these questions. You just
have to read them. Having said that, the interpretation is often not
straight forward, and it usually helps to draw pictures to illustrate
the concepts. In this regard, the companion documents to the base
rules (annex C in particular) are very useful. The documents are
available he

http://www.fai.org/gliding/sporting_code

Off for the final race of the year at Fairfield, so over-and-out on
this topic.

P3







Scott,