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The turning radius for 200 KTAS, 30 degrees is about 6000 feet or 3 times that of a 60 degree turn. Thus, taking turns at 30 degrees would add 6.2 NM to the course.
Grayhawk, N92EX
Grayhawk,
I agree with your calculations. Because Sun'N'Fun pretty much sets the standard, I think that we should add the whole 6.2 nm to all closed circuit courses that we fly. By closed circuit I mean the sum of all turns equals 360 deg.
Adding that same 6.2 nm to our 85.8 nm course at Fredricksburg would make our new course length 92 nm. Redoing the 320's speeds we get:
Call Sign Time Speed
------------------ ----- ------------------------
Sonic Boom 27:44 199.04 kts or 228.90 mph
Feathers 28:02 196.91 kts or 226.45 mph
and, oh well, I might as well finish out the 360's:
Call Sign Time Speed
------------------ ----- ------------------------
Speed Demon 25:22 217.61 kts or 250.25 mph
High Speed Traffic 26:13 210.55 kts or 242.13 mph
Grease Lightning 26:40 207.00 kts or 238.05 mph
In conclusion, you still have the fastest 320 but the differences are a lot closer than we thought in the past. I know, I know, the Sun'N'Fun started from a standstill but then again I never went over 2,550 rpm and drove like an old lady for the whole race. Remember, this time I should gain 5 kts with my new carbon fiber prop.
I can't wait until we meet again.
--
Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp.
248-478-4301, mailto:lorn@dynacomm.ws
LNC2, O-320-D1F, N31161, Y47, SE Michigan
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