2009 Proposed US Contest Rules Changes

On Jan 7, 1:35*pm, wrote:
On Jan 7, 12:28*pm, Andy wrote:





On Jan 7, 1:04*pm, wrote:

To visualize this draw two circles on a piece of paper - one has a
radius of 5 units (this is the start cylinder). Draw the second with a
radius of 30 units, just above the first and touching at the edge.
Your diagram now looks like a simple drawing of a soccer ball sitting
on top of a baseball. This is the worst case scenario - the biggest
possible first turn area (30 mi) sitting as close as possible to the
start cylinder (somebody check me that there isn't some minimum first
leg distance in the rules that is greater than 35 miles).

Close, but you have confused the issue by using an invalid task
example. *The minimum separation between the closest points of the
start cylinder and the first turn area is 5 statute miles. *See rule
10.3.1.1.

Andy

Thanks Andy,

RTFR - I was afraid of that. I'll redo the math.

Andy- Hide quoted text -

- Show quoted text -

Okay, The new numbers for a 40 mile first leg (center to center) are
that the "safe sector" has an included angle of around 85 degrees and
a distance along the circumference of 7.5 miles. If you increase the
first leg to 70 miles the angle goes up to 120 degrees and the
periphery extends to 21 miles. Compare that to a full "front half" for
reasonably long first legs of a bit under 31 miles around the edge of
the cylinder (it's not a full half circle because it's measured as an
arc from the first turn).

Whew!

9B