Author Topic: Poll: Complex Engine Management  (Read 5517 times)

Offline Toad

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Poll: Complex Engine Management
« Reply #135 on: January 15, 2007, 06:18:27 PM »
And a couple more quotes from links gone by:

Quote
The Government had specified a particular test regime to qualify an engine at “War Emergency Power”. This was a rating higher than take-off power and usually assumed anti-detonation injection. First the engine was run for five hours in five minute cycles alternating between War Emergency Power and a fast idle. Then it was run for two and one-half hours at a steady War Emergency Power rating. The Government thought this was a tough test, but Pratt & Whitney routinely ran its engines for 100 hours straight at War Emergency Power. The seven and one-half hours required by the Government was no problem whatsoever.



Quote
Ultimately, the maximum power achieved on the “B” series was 2800 HP at 2700 RPM. Maximum power ever achieved on the “C” series was 3800 HP at 2800 RPM. The maximum manifold pressure ever recorded was a staggering 150 inches of mercury (inHg)! This was up from dramatically from the 49-inHg maximum manifold pressure originally allowed in the R-2800 “A” series of engines.

Water injection worked by reducing cylinder inlet temperature, thereby delaying the onset of detonation. As the water evaporated in the induction passages of the engine, it providing a prodigious amount of cooling to the fuel charge due to the latent heat of vaporization of the water. Cylinder inlet temperatures went from about 350°F to about 100°F. This increased the detonation margin to the point that up to 150 inHg of manifold pressure could be used.

When water injection was in use, the engine was markedly smoother, and the interior of the combustion chambers stayed extremely clean with no carbon or varnish build-up on the piston crowns, valves, or ring packs. Frank remembers that “There was no hard carbon whatsoever. You could clean the top of a piston down to bare metal by wiping it with a cloth”.



Doesn't sound too fragile to me.
« Last Edit: January 15, 2007, 06:55:34 PM by Toad »
If ye love wealth better than liberty, the tranquility of servitude than the animated contest of freedom, go from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains sit lightly upon you, and may posterity forget that you were our countrymen!

Offline Serenity

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Poll: Complex Engine Management
« Reply #136 on: January 15, 2007, 06:23:50 PM »
Quote
Originally posted by Golfer
That was to Benny in his never ending quest for AH realism and was intended for sarcastic content related to in-game aircraft only.


Ah, well, I really do run a quick controls check before flight in game, as a habit I brought with me from real life.

Offline Golfer

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« Reply #137 on: January 15, 2007, 06:41:28 PM »
Quote
Originally posted by Serenity
Ah, well, I really do run a quick controls check before flight in game, as a habit I brought with me from real life.


Good on you then.  When they program that into the game you'll be a step ahead of everyone else.;)

Offline Serenity

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« Reply #138 on: January 15, 2007, 06:49:48 PM »
lol. I use it as a time filler to justfy my reducing RPMs down to less then half on the runway. All I do is lower flaps, and it feels stupid to power up, reduce RPMS, lower flaps, move RPMs back up and take off. So I tossed a control check in right after flaps.

Offline Golfer

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« Reply #139 on: January 15, 2007, 06:51:16 PM »
Quote
Originally posted by Serenity
lol. I use it as a time filler to justfy my reducing RPMs down to less then half on the runway. All I do is lower flaps, and it feels stupid to power up, reduce RPMS, lower flaps, move RPMs back up and take off. So I tossed a control check in right after flaps.


I feel like I'm trying to follow a bouncy ball through a pinball machine.

You do what?

Offline Toad

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« Reply #140 on: January 15, 2007, 06:58:17 PM »
And it still won't necessarily save you.

A buddy of mine flying F-4's out of Lakenheath did all his proper checks, rolled down the runway, rotated, became airborne, found the stick locked and unmoveable, punched out and watched the aircraft burn down the Queen's woods.

Turned out a wrench had been left in the stab pivot area and upon rotation it slid into the mechanism and locked the stick.

Maybe HT could model wrenches left in the wrong places.
If ye love wealth better than liberty, the tranquility of servitude than the animated contest of freedom, go from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains sit lightly upon you, and may posterity forget that you were our countrymen!

Offline Serenity

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Poll: Complex Engine Management
« Reply #141 on: January 15, 2007, 07:06:19 PM »
lol. Now that I have taken to taxiing from the hangar, my preflight is (With a fighter, for example Spitfire mk I):

Spawn in hangar.
Start engine.
Run engine at full RPM for 5 seconds
Reduce to around 1,500 or less
Taxi at that RPM out of hangar, onto taxiway, and to the runway at the point I think is necessary for porper takeoff. Enter runway, and take up position either in the middle (If alone) right side (If with Overlag or nonsense) or left side (If I am the lowest person in the flight)
Reduce RPMs to near cutoff, wait for anyone else in my flight. to catch up.
Once flight is assembled, lower flaps.
Run control check to insure that I didnt get a "Dont move your controls too rapidly" message during taxi.
Stand by for flight readyness
Bring RPMs to full
Bring manifold to full
Takeoff.
At 50ft AGL retract gear
at 200ft AGL retract flaps
at 500ft AGL reduce RPMs and manifold to normall
Upon reaching desired altitude bring RPMs and manifold to max cruise.
Uppon reaching enemy space return to normal power so as to be ready for fight.
Go to military power when enemy is sighted. Engage.
Return to desired altitude.
Go back to max cruise.
RTB
upon sighting friendly field, lower flaps to full deflection, make altitude 1,500 AGL
Lower gear when speed is proper
Enter 'downwind' at 1250 ft AGL
Enter base at 1,000 AGL
Enter final at 800ft AGL
Make proper landing
Retract flaps, reduce RPMs to 1,500 or less
Taxi off of runway
end sortie

Thats my flight, assuming I am not upping from a base under attack. If base is under attack, ommit the taxi to and from runway. All pre-takeoff and in flight procedure remains. If base is capped, ommit all above.

Offline Golfer

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Poll: Complex Engine Management
« Reply #142 on: January 15, 2007, 07:10:08 PM »
You must've been the squeaky kid I heard trying to call the tower requesting permission to land the other day.


Best I have thus far Toad is in a C-550 shortly after a phase inspection.  Elevator attach points were missing one bolt altogether and the other one didn't have a nut (castle nut where in a perfect world you'd see a cotter pin too)

Made ya wonder how the plane would fly with one side trying to shake itself off of the airplane.

I check those now.

I also like the story of a good friend of mine discovering the parachute in a Lear 35 wasn't attached to the airplane.
« Last Edit: January 15, 2007, 07:14:03 PM by Golfer »

Offline Serenity

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« Reply #143 on: January 15, 2007, 07:16:26 PM »
Quote
Originally posted by Golfer
You must've been the squeaky kid I heard trying to call the tower requesting permission to land the other day.


Im offended! :(

Ive never done that before and never will!

Offline Toad

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« Reply #144 on: January 15, 2007, 07:17:25 PM »
Well, before I even go out the AH hangar, I sit in the tower for a half hour and pretend I'm getting a 30 minute mission brief.

Top that one!
If ye love wealth better than liberty, the tranquility of servitude than the animated contest of freedom, go from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains sit lightly upon you, and may posterity forget that you were our countrymen!

Offline Serenity

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« Reply #145 on: January 15, 2007, 07:19:52 PM »
Quote
Originally posted by Toad
Well, before I even go out the AH hangar, I sit in the tower for a half hour and pretend I'm getting a 30 minute mission brief.

Top that one!


lol. Do you do yours on a regular basis? I do :D

(I know YOU were just joking, mine was serious though.)

Offline Serenity

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« Reply #146 on: January 15, 2007, 07:20:50 PM »
And hey! If we add prop control, cowl flaps and mixture, just IMAGINE how much longer I can make my checklist!

Offline Golfer

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« Reply #147 on: January 15, 2007, 07:22:44 PM »
Yeah...since they changed the GUI settings I've been waiting for a mechanic to walk from the hangar to the ramp to fix my nav light for 3 months.

Offline Serenity

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« Reply #148 on: January 15, 2007, 07:25:13 PM »
lol. Im being mocked, arent I?

Offline Bronk

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« Reply #149 on: January 15, 2007, 07:25:59 PM »
Quote
Originally posted by Serenity
lol. Im being mocked, arent I?

No not at all.
:rolleyes: :rolleyes: :D


Bronk
See Rule #4