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Old Jan 16, 2013, 09:25 PM
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What are the parameters of F5b duration tasks?

What are the basics?
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Old Jan 16, 2013, 11:19 PM
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The basics:

10-minute target time
1 point deducted for each second of motor used
1 point deducted for each second over or under 10:00 flight time
30, 20, or 10 point bonus added for landing within 10M, 20M, or 30M circle

Lenny
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Old Jan 17, 2013, 01:04 AM
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Whats the wing loading requirement or-- can you switch to a lighter bat pack?
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Old Jan 17, 2013, 01:45 AM
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No...the three tasks are in one row....distance....thermal....target landing....

There´s no landing between! so 200s for distance, 600s Thermal and target landing.
For motor on in thermal timeframe, each second -1 point. For landing later or earlier than 600s, for each second -1 point.
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Old Jan 17, 2013, 04:14 AM
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How many seconds motor run would you typically use if you didn't find any lift to fly out the 10 mins? Can't imagine it's many

Also what are the F5B planes like at working light/moderate lift. Can see that they'll climb out in a big thermal as they're efficient planes but are they tricky in light lift with the relatively high wing loading?
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Old Jan 17, 2013, 05:49 AM
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Just looked back over my last 3 seasons comps, and the most motor I used in duration was 7 seconds. I am now using a bit more power, so I doubt if I would have that much motor runtime available for the duration now. But of course with more power the climb is faster so I don't need so much runtime (I hope!).

Despite the wing loading of about 65gm/dm^2 I don't think they are tricky to fly in any conditions and can use light lift very well, but at that wing loading it is easier for a pilot to miss light lift - one of my big failings I am afraid .

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Old Jan 17, 2013, 08:54 AM
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Have a look here...these are the results of Eurotour in Gommersheim:
http://www.contest-eurotour.com/html...ommersheim.htm

Everything from 0 to 6 Seconds during duration.
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Old Jan 17, 2013, 10:35 AM
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Quote:
Originally Posted by Matze_Koelle View Post

Everything from 0 to 6 Seconds during duration.
And, just to clarify for those who don't know -- a climb is often done at the end of the distance task, just before the duration task begins.
Thus, that climb is not penalized and it is quite possible to complete the duration task with 0 seconds of motor run in good conditions.

Lenny
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Old Jan 18, 2013, 07:07 AM
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A bit more information on F5B is available here for anyone interested:-
http://www.f5b.co.uk/CMS/Rules

Dick
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Old Jan 18, 2013, 11:00 AM
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The points definitely seem skewed towards the distance task, which is total understandable given the appeal (power, acceleration and speed) of the planes.

Be interesting to see the effect of increasing the penalty of motor run during the duration (say 10 or 20 points deducted for every second) Or am I getting into the territory of F5F?. Sorry, I'm ignorant of the rules of F5F, how does it differ?
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Old Jan 18, 2013, 11:04 AM
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F5F has a slightly lower wing loading and lower energy limit i.e a bit bigger airframe and less power.
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Old Jan 18, 2013, 11:38 AM
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Tim,
I just ran the top 2 scores from the UK 2012 Nationals again with 10 points deducted for each second of motor. Original scores had 1st place with 3000 and second with 2994.3, bigger motor run penalty resulted with the same person winning with 3000 but the 2nd place score dropped to 2975.3.

If anything the points are currently biased the duration task as there are 600 up for grabs there with a perfect flight but the current best distance score is 520 I think.

Steve.
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Old Jan 18, 2013, 12:09 PM
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Ahh OK, didn't think about the total points up for grabs for the different disciplines.

I was just thinking more along the lines of, person A using a 2 second blast and working hard at a thermal to max out the 10 mins against person B, who maybe uses a few blasts, say 5 sec's, and cruises around at best L/D.
Assuming an equal landing, Person B would only be 3 points worse off, but if they managed 1 extra leg in distance, would still 7 points up despite performing relatively badly in the duration.

I might have the wrong end of the stick, as a total newby to F5B, and not appreciate how difficult it is getting 1 or 2 more legs in compared to your competitors.

I'll have to make it to one of the UK comps this year and see it first hand.
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Old Jan 18, 2013, 12:34 PM
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So the point scoring system is identical in F5F? just differing wing loading and energy limit.
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Old Jan 18, 2013, 02:38 PM
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Yes they are the same tasks and the same scoring system. I believe it was originally intended to be a slower version of F5B as an introductory class.

Dick
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