long range flight: most economic power settings?

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Zacke
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Joined: 27 Sep 2018, 08:18
Location: EDNY

long range flight: most economic power settings?

Post by Zacke »

Hey guys,

I'm going to ferry my brand new P40C from A2A (at 4B8) over to my HQ at EDNY.

So could somebody give me some advise what's the (absolutely) most economic power setting with the P40?

(route will be via Canada, Greenland, Iceland, UK and so on.)

Thanks in advance,
Zacke

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Oracle427
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Re: long range flight: most economic power settings?

Post by Oracle427 »

In theory, cruising at something close to your best gliding speed of around 90mph inidcated is going to give you the most economic fuel burn and longest time in the air. The reason for this is that drag as near a minimum level.

Power settings would be lowest continuous RPM for cruising, MAP set to hold ~90mph and the aircraft in a clean config.

I haven't had much luck finding charts with test data to support this. I can only find a reference to 90mph being the approximate best glide.
Flight Simmer since 1983. PP ASEL IR Tailwheel
N28021 1979 Super Viking 17-30A

Zacke
Staff Sergeant
Posts: 381
Joined: 27 Sep 2018, 08:18
Location: EDNY

Re: long range flight: most economic power settings?

Post by Zacke »

Thanks Oracle427!

So: Does anybody have an idea what's the lowest continuous RPM with the P40?

By the way: The idea of crossing the north atlantic with 100 mph or so is quite memorable. :D Lindbergh style...

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Oracle427
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Joined: 02 Sep 2013, 19:30
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Re: long range flight: most economic power settings?

Post by Oracle427 »

I should add, things like maintaining proper operating temps are important. So if you find that the low power settings result in temps, oil pressure, etc. dropping off too much it may not be healthy for the engine and it may be necessary to push a little harder and trade away some efficiency.

Not sure that engine damage is simulated this way on the P40, but still something to consider to simulate real world practices.
Flight Simmer since 1983. PP ASEL IR Tailwheel
N28021 1979 Super Viking 17-30A

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