06/22/10 I was flying from Detroit to Ft Lauderdale at 11,000. With nothing else to do, I thought that I would take a few measurements.

Condition LOP Lo ROP Hi
--------- -------- ---------
11,000 IA 2,350RPM 2,700 RPM
13,000 DA 19.3"MP 19.8"MP
30.08 "Hg 6.0 GPH 8.6 GPH
12°C temp 139 kts IAS 152 kts IAS
35°F dewpt? 168 kts TAS 183 kts TAS
1,670 lbs

For a 43% increase in fuel, a 9% increase in airspeed doesn't sound like much. However, 183 kts airspeed at 13,000 ft density altitude, no matter how you do it, is great.

The LOP reading at .435 BSFC comes out to HP = 36 * 6 * .435 = 94.0 HP or 94.0 / 160 = 59% power.

Comments appreciated.

Lorn

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,700 hrs, N31161, Y47, SE Michigan


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