Old Wives Tales

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The pitch for airspeed and power for altitude is a good tool to prepare students for BAI. You are wrong in my opinion about them being interconnected. If you are trimmed for straight and level flight at 120 knots and you take out 5 inches of Manifild pressure you should get a 500 FPM decent, the airpseed should remain constant.


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I disagree: They are interconnected. You trim for 120, pull some power, airspeed begins to decrease, tail down force decreases proportionately, the aircraft pitches down, airspeed increases to its original value and stabilizes in the descent, and tail down force again balances with nose down tendency, equaling a 500 fpm descent at 120. You've just changed your pitch, but you did it with power instead of elevator. Pitch + Power = Performance: change one, you have to change the other whether intentionally or unintentionally.

(And THAT was the mother of all run-on sentences! /ubbthreads/images/graemlins/blush.gif)
 
Two more quick things:

First, most of the OWTs are, indeed, incorrect in some respect. However, they are also correct in that without further clarification, knowledge, and training, they are good guidelines to follow. Break them at your own risk and only when you know what you're doing.

Second, I swear that I'm the king of 'second page starters.' I haven't been posting much lately, but it seems like every time I do, I'm the first guy on the second page. Don't know what that means . . . /ubbthreads/images/graemlins/cool.gif
 
Regards flying an engine "squared", it can very well be done, as Pilot602 said, if kept within parameters. Remember that radial-engined planes, such as those flying with R-2800s or R-3350s, regularly run 57" MP with 2800 (or so) RPM on takeoff. That's quite a difference in "square", but within that engine's limitations. So the point is, know the engine you're working with.

Reminds me of the thread on pax telling Doug about "landing the 1900 with the mixure lean!!!"

About a year ago, an F-16 was on takeoff roll at TUS, when over the tower frequency, a PPL doing his engine runup at the midfield of 11L, called tower that the fighter-jet on takeoff roll had a major engine fire. Tower advised the F-16, which aborted it's takeoff and dropped it's hook for a long-field arrestment, fouling the runway for about 20 minutes while they sorted the situation. The PPL had merely seen the afterburner flame from the engine at max AB, and thought the engine was on fire. /ubbthreads/images/graemlins/rolleyes.gif
 
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