飞机培训课件英文版：EX#10A FLIGHT FOR ENDURANCE

1、PGI EXERCISE # 10A FLIGHT FOR ENDURANCE,200612810807,Enabling Objectives,What flight for Max Endurance is and where it is on the power curve. Determination with POH and the experimental method. Leaning Technique. Factors affecting flight for max endurance and the differences endurance & max enduranc

2、e. Human Factors & Safety Considerations.,Flight for Endurance,Theoretical Definition: Longest length of time in the air per unit of fuel burned. Practical Definition: Minimum Power to maintain level flight PURPOSE Runway availability Holding for weather Hold for other traffic Holding due to emergen

3、cy,Power Curve,Enabling Objectives,What flight for Max Endurance is and where it is on the power curve. Determination with POH and the experimental method. Leaning Technique. Factors affecting flight for max endurance and the differences endurance & max endurance. Human Factors & Safety Consideratio

4、ns.,ENDURANCE PROFILES AT SPECIFIC PWR SETTINGS,Figure 2-21 FTM,PA: = 6000 PWR: = 65% ENDURANCE: ?,3 hrs & 48 min.,PWR: = 55% ENDURANCE: ?,Exercise!,Look for the endurance profile and find the endurance for 75% power at PA of 4000 with standard temperature With the same profile, find the endurance f

5、or 60% at PA of 6000 with -10 deviation from standard temperature,Procedure From Cruise : Reduce RPM by 100 increments Maintain altitude by increasing pitch / trim A/S will decrease but altitude will remain Be Precise! How to know when to stop 100 rpm increments? Lean the mixture,Experimental Method

6、,Enabling Objectives,What flight for Max Endurance is and where it is on the power curve. Determination with POH and the experimental method. Leaning Technique. Factors affecting flight for max endurance and the differences endurance & max endurance. Human Factors & Safety Considerations.,Importance

7、 of Leaning,Fuel Economy Smoother running of engine More efficient engine Extended range of the airplane Less spark plug fouling More desirable engine temperatures Cleaner combustion chambers,Leaning for Best Power,With EGT, during cruise: Pull the mixture out slowly Identify peak EGT Best power nor

8、mally 125F on rich side of Peak EGT (eg. C172 is 125F but DA20 is 25F on rich side) Without EGT: Replace EGT with the rpm gauge: Pull the mixture out slowly Identify peak RPM *Consult POH / Engine manual for procedure,Enabling Objectives,What flight for Max Endurance is and where it is on the power

9、curve. Determination with POH and the experimental method. Leaning Technique. Factors affecting flight for max endurance and the differences endurance & max endurance. Human Factors & Safety Considerations.,Factors,Mixture lean / rich? Flaps extended or retracted ? Weight Max AUW? Turbulence Increas

10、e, Endurance decreased ? Altitude Higher, more endurance? Maneuvering Climb / descend / cruise / turn?,Difference,ENDURANCE: Using the POH to find endurance. For flight planning. MAX ENDURANCE: Experimental method takes into account all variables. In the aircraft.,Enabling Objectives,What flight for

11、 Max Endurance is and where it is on the power curve. Determination with POH and the experimental method. Leaning Technique. Factors affecting flight for max endurance and the differences endurance & max endurance. Human Factors & Safety Considerations.,Safety Factors Consideration,Visibility reduce

12、d over the nose. LOOKOUT Possible Carb Ice Leaning the mixture.,Human Factors,Decision Making When you should set up for max endurance or consider other options? Backup plan Situation Awareness Fuel remaining = VFR Min? Environment = Temperature,Enabling Objectives,What flight for Max Endurance is and where it is on the power curve. Determina