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1、PGI EXERCISE # 9B STEEP TURNS,200612810807,Enabling Objectives,Basic Factors Involved in a Steep Turn. Procedures for a Steep Turn. Minimum Radius and Collision Avoidance Turns. Human Factors and Safety Considerations.,Definition,STEEP TURN: a turn with an AOB of 30 deg plus. For Training, aim for 4
2、5 deg.,Facts about Steep Turns,Increase AOB & Maintain constant A/S Increased rate of turn Smaller radius of turn Higher stalling speed Increased wing loading Result = More Lift required! Why?,FORCES IN A TURN (Review),Figure 2-14 FTM,THE RELATIONSHIP BETWEEN ANGLE OF BANK, LOAD FACTOR, & BASIC STAL
3、L SPEED (Review),Figure 2-16 FTM,LIFT AND ANGLE OF BANK (Review),Figure 2-17 FTM,Enabling Objectives,Basic Factors Involved in a Steep Turn. Procedures for a Steep Turn. Minimum Radius and Collision Avoidance Turns. Human Factors and Safety Considerations.,Entry,Choose a visual reference. LOOKOUT Ap
4、ply coordinated ailerons and rudder control through 30 At 30 AOB Backpressure to maintain correct pitch attitude with horizon Add 100 RPM power. LOOKOUT Glance at instrument for performance & adjust accordingly by attitude Attitude + Power = Performance,INSTRUMENT INDICATIONS RIGHT TURN 45 DEGREES,N
5、ose on the Horizon 45 Degrees.,Constant Altitude.,Constant Airspeed.,VSI at Zero.,Ball centered, Steep Turn (45 Degrees angle of bank).,Recovery,Take of your angle of bank (AOB) as a guide to level out your wings. Release the extra back pressure you added. LOOKOUT Reduce power to cruise as you level
6、 out from the turn.,Enabling Objectives,Basic Factors Involved in a Steep Turn. Procedures for a Steep Turn. Minimum Radius and Collision Avoidance Turns. Human Factors and Safety Considerations.,Rate vs Radius,Increase AOB & Maintain constant A/S Increased rate of turn Smaller radius of turn Higher
7、 stalling speed Increased wing loading Increase A/S & maintain constant AOB The slower the rate of turn The larger the radius of turn,Minimum Radius Turns,Narrow Valley turn Slower a/s = tighter radius (Check POH). Lower flaps (Check POH) Increases Vis, decreases stall speed. Greater angle of bank =
8、 tighter radius,Collision Avoidance,Change heading 90 right Power off Positive back pressure (below Va) Roll up to 45 bank (or more). Once 90 from previous flight path, roll back into cruise attitude and add power *A vertical maneuver may be more effective in close range, head on collision situation
9、s (10 sec to impact),Enabling Objectives,Basic Factors Involved in a Steep Turn. Procedures for a Steep Turn. Minimum Radius and Collision Avoidance Turns. Human Factors and Safety Considerations.,Safety Consideration,Good lookout and VW scan Low wing be aware what is beneath High wing see what your
10、 turning towards Look in direction of turn Checklist in climbing & descending turns Different visual ref in A/C - be aware Collision avoidance,Human Factors Consideration,STRESSED Fly ATTITUDE & LOOKOUT G-force Motion sickness Posture : keep body vertical, relax and ride with turn,Postures in a Turn,Enabling Objective
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