SaparotRob
Unter Gemeine Geschwader Murmeltier XIII
Is this the one where, when Daffy is being pursued by Hitler and Mussolini, puts a Stalin mask and terrifies the two?
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I think that's the one where he's a commando and first confronts a raven who's a German officer wearing a monocle.Is this the one where, when Daffy is being pursued by Hitler and Mussolini, puts a Stalin mask and terrifies the two?
I just looked it up. That's Daffey the Commando. His foil is Uberkomt von Vultur.I think that's the one where he's a commando and first confronts a raven who's a German officer wearing a monocle.
Hey Buffnut, if he doesn't answer questions that put a bad light on either the P-39 or himself for being wrong, what makes you think he'll ever answer your request for a sources on the gas heater in a P-39D?
Doesn't really need an answer. I think we understand the lack of enthusiasm for a reply since perhaps there IS no source. On the other hand, perhaps he'll surprise us all and chime in with one. Still, it won't turn a sow's ear P-39 into silk purse fighter. All it can do is kill the pilot with carbon monoxide poisoning, and do it while being very heavy and sapping otherwise potential war winning performance, nose armor aside ... maybe even 498 mph .... nnaaahhhhhhh. It's a P-39, for crying out loud.
Maybe this will help:
View attachment 633182
I'm starting to like it better than the P-39. At least it's an honest airplane that won't tumble and roll and dig a big hole.
Exactly what I have been saying, tested at gross weight but test weight listed as 95% of gross to approximate average fuel during the flight.I believe the British corrected performance to 95% of gross weight. Not tested at 95% gross weight, since the weight varied during a test flight.
What sources do you need? The pilot's manuals say the gas heater was in the export models (P-400, P-39D1 and D2) and the rest (D/F/K/L/M/N/Q) had the ducted air system.Hey Buffnut, if he doesn't answer questions that put a bad light on either the P-39 or himself for being wrong, what makes you think he'll ever answer your request for a sources on the gas heater in a P-39D?
Doesn't really need an answer. I think we understand the lack of enthusiasm for a reply since perhaps there IS no source. On the other hand, perhaps he'll surprise us all and chime in with one. Still, it won't turn a sow's ear P-39 into silk purse fighter. All it can do is kill the pilot with carbon monoxide poisoning, and do it while being very heavy and sapping otherwise potential war winning performance, nose armor aside ... maybe even 498 mph .... nnaaahhhhhhh. It's a P-39, for crying out loud.
Maybe this will help:
View attachment 633182
I'm starting to like it better than the P-39. At least it's an honest airplane that won't tumble and roll and dig a big hole.
What sources do you need? The pilot's manuals say the gas heater was in the export models (P-400, P-39D1 and D2) and the rest (D/F/K/L/M/N/Q) had the ducted air system.
Because the only difference in fuel consumption at 25000' is RPM. Throttle set at full, mixture at auto rich. No other changes except going from 2600rpm to 3000rpm. Your figures at 14000'-15000' have no relevance to fuel consumption at 25000'.No, you can't do it that way.
It doesn't take into account the different internal friction and supercharger drive requirements.
Please look at the manual again.
Power level.............................HP .......................rpm.......................altitude....................fuel per hour.......................HP/hr/gal
MIlitary...................................1125......................3000.......................15,500.......................138...........................................8.15
Max continuous.................1000........................2600.......................14,000.......................109..........................................9.19
Economical max..................750.......................2280.......................14,000..........................74..........................................10.13
Minimum cruising (R).......600.......................2190........................14,000..........................52.........................................11.53
Minimum cruising (L).......600.......................2190........................14,000..........................48..........................................12.5
Please note that in above examples from the manual that in all but the Minimum cruise (L) the mixture was set to rich. All but the Military rating were at the same altitude.
Now when the engine goes from 600hp at 2190rpm to 1000hp at 2600rpm we have a 19% increase in rpm, a 60 % increase in power to the prop and a 209%increase in fuel per hour burned or about a 25% increase in fuel burned per HP hour.
I will throw it back at you.
Explain where the energy needed to over come the changes in internal friction and energy needed to drive the supercharger at the higher speeds come from, please.
Until you can then you are the one who is incorrect.
And another 3 pages have been added with no answer to my post #2746.
Sorry for such boring posts but I keep hoping to get an answer.
It keeps us grounded.
The P-51 D ended up with 465 gallons of fuel 6 MGs with ammunition, enough oil for an 8 hr mission at least, tail warning radar etc, the D was slightly heavier and slower than the B/C but thats exactly what the client wanted, why do you keep quibbling about small weight differences?Exactly what I have been saying, tested at gross weight but test weight listed as 95% of gross to approximate average fuel during the flight.
Thank you.
Are these the settings you used when you flew it?Because the only difference in fuel consumption at 25000' is RPM. Throttle set at full, mixture at auto rich. No other changes except going from 2600rpm to 3000rpm. Your figures at 14000'-15000' have no relevance to fuel consumption at 25000'.
Are these the settings you used when you flew it?
Because the only difference in fuel consumption at 25000' is RPM. Throttle set at full, mixture at auto rich. No other changes except going from 2600rpm to 3000rpm. Your figures at 14000'-15000' have no relevance to fuel consumption at 25000'.
Pixie Dust, unicorn poop or Groundhog mystical incantationsBecause the only difference in fuel consumption at 25000' is RPM. Throttle set at full, mixture at auto rich. No other changes except going from 2600rpm to 3000rpm. Your figures at 14000'-15000' have no relevance to fuel consumption at 25000'.