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#4536100 - 10/07/17 10:32 AM Temperature Altitude
bigj_16 Offline

Registered: 07/03/17
Posts: 1239
Loc: Douglas County, Colorado
There was discussion on the UOA section about altitude, etc. I ran across this paper. Has a a lot of different interesting points in it. I would assume it is about drone engines.

#4536108 - 10/07/17 10:48 AM Re: Temperature Altitude [Re: bigj_16]
JohnnyJohnson Online   content

Registered: 10/22/09
Posts: 2113
Loc: Wet side WA
Believe it or not this was written when Obama was in office he must have missed this "“Praise God from Whom all blessings flow.” .
2004 Toyota Corolla 118565
Out: QSUD 5W-30 Purolator One 5030 mile OIC
In: Valvoline ML 5w-30 Fram TG4967 117530
2006 Duramax 73712

#4536109 - 10/07/17 10:49 AM Re: Temperature Altitude [Re: bigj_16]
bigj_16 Offline

Registered: 07/03/17
Posts: 1239
Loc: Douglas County, Colorado
Well, this is about high altitudes smile

#4536231 - 10/07/17 01:34 PM Re: Temperature Altitude [Re: bigj_16]
ZeeOSix Offline

Registered: 07/22/10
Posts: 16770
Loc: PNW
Good paper, but no surprises - less dense air from high altitude causes power loss in NA engines. That's why they were supercharging WWII aircraft engines in the 40s.
Efficiency ?!

#4536302 - 10/07/17 03:43 PM Re: Temperature Altitude [Re: bigj_16]
Pajero Offline

Registered: 05/05/12
Posts: 772
Loc: Rio Rancho, NM
Thanks for posting! Trust me, there is a significant power loss at high elevations. I live at 5,600 feet. When I lived at sea level, truck was awesome! At least fuel injectors compensate, people with carbs, well they are adjusting at various elevations. I physically run at various elevations and your lungs feel it. Especially in Santa Fe 7,500 feet or the Sandia Mountains 10,0000 feet. Your body develops a lot of red blood cells to adjust.


Always remember "Planned obsolescence."

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#4536386 - 10/07/17 05:41 PM Re: Temperature Altitude [Re: bigj_16]
bigj_16 Offline

Registered: 07/03/17
Posts: 1239
Loc: Douglas County, Colorado
What about JP-8 in SI engines?