Because I had nothing very interesting to post here this week, I thought useful to share here a bit of my studies. Anyone interested in a multi-lesson? Well if you are here reading this and have the odds for the nerdy-flying stuff or has nothing better to do right now, you might wanna take a shot:
VMC
"Vmc is the calibrated airspeed at which, when one engine is made inoperative, it is possible to maintain control of the airplane with that engine still inoperative, and thereafter maintain straight flight at the same speed with an angle of bank no more than 5°."
The method used to define or simulate the critical engine failure (Vmc) must represent the most
critical mode of failure with respect to controllability according to FAR 23.149.
Conditions by which Vmc is determined by the manufacturer for certification:
I. Standard Atmospheric conditions exist
II. Most unfavorable CG and Weight
III. Airborne and out of ground effect
IV. Critical engine inop.
V. Bank no more than 5° in the good engine
VI. Max takeoff power
VII. Trimmed for takeoff
VIII. Flaps in takeoff position
IX. Cowl flaps in takeoff position
X. Landing gear retracted
XI. Inop engine windmilling
XII. Rudder force to maintain control must not exceed 150 pounds
XIII. Must be possible to maintain a heading +/‐ 20°
The Critical Engine:"Critical Engine is the engine that will produce the most undesirable effects on the airplane when suddenly made inoperative."
• Four factors that determine critical engine
1. P – P‐factor
2. A – Accelerated airflow
3. S – Spiraling slip stream
4. T‐ Torque effect
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3 comments:
Quite interesting, though the last diagrams did make me scratch my scalp...
Enjoy the progress dude.
thanks for the support!
"the sky is the limit"
Last diagram is kinda hard to comprehend. Although I do believe the diagram in QIV is regarding P-Factor.
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