REFLECTOR: Fuel Consumption Performance

[Chuck Jensen]

Hi, Tim,
 
Nice numbers but I was curiouos about the difference between your IAS and TAS.  If I understand it correctly, a rule of thumb is the IAS speed drops by 2 kts for each 1000 foot.  So, at 175 IAS +21 kts (10,500 x 2 kts/1000 = 21 kts) = 196kts TAS.  I understand this is just a rough rule of thumb, but that leaves 19 kts (215 - 196 = 19)unaccounted for.  Was it that much of a non-standard day, or is my rule of thumb bad?
 
Chuck Jensen 

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On Behalf Of TimRhod at aol.com
Sent: Wednesday, August 12, 2009 11:09 AM
To: reflector at tvbf.org
Subject: Re: REFLECTOR: Fuel Consumption Performance


I have a XLRG   with Cont. IO-550  370HP because of high compression pistons and duel electronic ignition. I just flew sunday and was crusing at 10,500ft  at 215k true 175 indicated on 12.5 gal/hr. running  100degrees  LOP  2400RPM.    Tim Rhodenbaugh 


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