Steering turnpoint radius at WGC

[Andy[_1_]]

Each day the task includes a steering turnpoint to line the gliders up
with the active runway. Sometimes the steering point has a radius of
1000m (1km) and sometimes it has a radius of 2km.

I tried to find an association between runway in use, or task type,
and the radius but have found none.

Why does the radius change. Surely not a deliberate trap for the
unwary?

Andy

[MaD]

It is 1km for Racing Tasks and 2km for Area Tasks now. Might have been
different on the first dayay it was used.

Regards
Marcel
MD, 18m Class

[Andy[_1_]]

On Aug 3, 11:20*am, MaD > wrote:
> It is 1km for Racing Tasks and 2km for Area Tasks now. Might have been
> different on the first dayay it was used.


Thanks Marcel.

Andy

[John Cochrane]

On Aug 3, 8:43*pm, Andy > wrote:
> On Aug 3, 11:20*am, MaD > wrote:
>
> > It is 1km for Racing Tasks and 2km for Area Tasks now. Might have been
> > different on the first dayay it was used.
>
> Thanks Marcel.
>
> Andy

They are also setting 2km on some racing tasks. The idea is to
separate classes. For example is 15 meter is coming in straight from
the south, they get a 1 km circle. Then if 18m is coming in from the
west they get a 2 km circle, so that they're not turning exactly where
15m is coming through.

John Cochrane BB

[Pat Russell[_2_]]

I guess nobody minds that these are illegal Racing Tasks.

[Andy[_1_]]

On Aug 3, 12:21*pm, Pat Russell > wrote:
> I guess nobody minds that these are illegal Racing Tasks.

I assume the concern is :

7.5 TURN POINTS AND ASSIGNED AREAS
7.5.1 A Turn Point is a way point between two legs of a flight. The
Observation Zone of a Turn Point is the airspace in a vertical
cylinder of 500 m radius centered on a Turn Point.

which appears to give no to option to change the radius.

[[email protected]]

On Aug 3, 4:43*pm, Andy > wrote:
> On Aug 3, 12:21*pm, Pat Russell > wrote:
>
> > I guess nobody minds that these are illegal Racing Tasks.
>
> I assume the concern is :
>
> 7.5 TURN POINTS AND ASSIGNED AREAS
> 7.5.1 A Turn Point is a way point between two legs of a flight. The
> Observation Zone of a Turn Point is the airspace in a vertical
> cylinder of 500 m radius centered on a Turn Point.
>
> which appears to give no to option to change the radius.

There is commonly some room in the IGC system to permit some local
rules.
As a way to keep the groups apart, this seems to make good sense and
would have no meaningful affect on the competition.
FWIW
UH

[Pat Russell[_2_]]

> There is commonly some room in the IGC system to permit some local
> rules.

Local procedures, yes. Local rules, no.

Picture a pilot, whose first language is not English, and whose glide
computer assumes that the Turn Point radius for a Racing Task is 500
meters, as per Annex A. The pilot misses or misunderstands the 1000
meter radius declared at the Briefing. Now imagine that it is raining
on the Turn Point. The pilot pushes in to 500 meters and winds up
landing out. Everyone else makes the turn at 1000 meters and
completes the Task. The pilot complains to the Director, who rules
that the pilot should have paid more attention at the Briefing. The
pilot then protests the ruling, claiming that an illegal Task was
called.

In that situation, I would not like to be a member of the Jury.