Sunday, September 21, 2014
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2009 May 29 - Duct Temps

Installed temperature sensors in the radiator air inlet and outlet ducts. There has been some discussion about whether I am picking up hot exhaust gasses with my P-51 style radiator inlet. Based on these temperature measurements, I do not think that is happening do any significant degree.

IAS RPM Coolant Temp Outside Temp Density Altitude Inlet Temp Outlet Temp
115 (climb) 3600 190 68 68 111
133 (cruise) 4000 210 68 8,500' 70 118
145 (cruise) 4200 215 68 8,500' 70 122

I also made a two way speed pass noting speeds. This was done at a density altitude of 8770'.

Heading Outside Temp IAS TAS GPS
North 69 146 161 133
South 69 140 157 120

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