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Old October 19th 10, 07:08 PM posted to rec.aviation.soaring
Peter Scholz[_2_]
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Default OLC Scoring for 2011

Am 19.10.2010 19:47, robert hunter wrote:
On Oct 19, 10:13 am, Greg wrote:
On 10/19/2010 9:53 AM, robert hunter wrote:



That surely shows that tows are within the 15km exclusion. But I
would still like to see the source. Greg, any reference to the OLC
rules themselves, or other, to get the wording? The only doc. I find
is "Friday, October 15
OLC 2011: Foresight into future!"


I think that may be the only source. I don't see this in the rules, but
I could be looking at the wrong place.


If there is a reader of German in this group, I request he or she read
the new rules in German, and let us know if towed gliders are
included. From the English version of the 15th announcement, there is
is no indication of applicability to towed gliders. Indeed, the
rationale in that version is to diminish the perceived bump
motorgliders get from propulsion, and that bump is defined as (a)
restarting the engine in flight to get another bite at the apple and
(b) flying far away from home for a start. Arguably, a long tow fits
the (b) condition, but the the fit is not very good; the pure glider
still has to get back on its own, and any glider can take a long tow.


the rule 4.5 does not explicitely mention tow flight, neither in the
English or German version:

(German version)
4.5 Startkreis

Vor dem Sprintabflugpunkt muss der antriebslose Flug in einem Zylinder
mit 15km Radius um den Startplatz beginnen beziehungsweise diesen kreuzen.
...........

(English version)
4.5 Start Circle

Before the sprint departure point, the powerless flight must begin
within, or pass through, a cylinder with a radius of 15km centered on
the take-off airfield.
............

So the wording "antriebsloser Flug" can be translated as "powerless
flight", or "flight without propulsion". Common sense would include both
aerotow and selfpowered flights, I guess.
--
Peter Scholz
ASW24 JE