FH.X.A.S4
SkillMaintain an altitude that permits safe clearance between the tail boom and the surface, as applicable.
From the FAA library
- Chapter 6: Flight Controls › Flight Control Systems › V-Tail
This motion is called yaw. Like the other primary control surfaces, the rudder is a movable surface hinged to a fixed surface in this case, to the vertical stabilizer or fin. The rudder is controlled by the left and right ... rudder moves left. This alters the airflow around the vertical stabilizer/rudder and creates a sideward lift that moves the tail to the right and yaws the nose of the airplane to the left. Rudder effectiveness increases with speed; therefore, large…
- Chapter 6: Flight Controls › Flight Control Systems › T-Tail
example, the horizontal tail surfaces may be attached near the lower part of the vertical stabilizer, at the midpoint, or at the high point, as in the T-tail design. Figure 6-10. The elevator is the primary control ... changing the pitch attitude of an aircraft. T-Tail In a T-tail configuration, the elevator is above most of the effects of downwash from the propeller, as well as airflow around the fuselage and/or wings during normal flight conditions…
- Chapter 6: Flight Controls › Flight Control Systems › Elevator
series of mechanical linkages. Aft movement of the control column deflects the trailing edge of the elevator surface up. This is usually referred to as the up-elevator position. [Figure 6-10] Figure 6-8. Coupled ailerons and rudder. Figure ... position decreases the camber of the elevator and creates a downward aerodynamic force, which is greater than the normal tail-down force that exists in straight-and-level flight. The overall effect causes the tail of the aircraft to move…
- Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Loss of Tail Rotor Effectiveness (LTE)
catastrophic. LTE is an aerodynamic condition and is the result of a control margin deficiency in the tail rotor. It can affect all single-rotor helicopters that utilize a tail rotor. The design of main and tail rotor blades ... tail boom assembly can affect the characteristics and susceptibility of LTE but will not nullify the phenomenon entirely. Translational lift is obtained by any amount of clean air through the main rotor disk. Chapter 2, Aerodynamics of Flight, discusses translational…
- Chapter 1: Introduction to the Helicopter › Rotor System › Intermeshing Rotors
shafts connected at both ends with flexible couplings. The flexible couplings allow the drive shaft to flex with the tail boom. Figure 1-7. Coaxial rotors. Figure 1-8. HH-43 Huskie with intermeshing rotors. Figure 1-9. Basic tail ... rotor components. The gearbox at the end of the tail boom provides an angled drive for the tail rotor and may also include gearing to adjust the output to the optimum rotational speed typically measured in revolutions per minute…
- Chapter 4. Air Traffic Control › Section 4. ATC Clearances and Aircraft Separation › 4-4-6. Special VFR Clearances
When a control tower is located within the Class B, Class C, or Class D surface area, requests for clearances should be to the tower. In a Class E surface area, a clearance may be obtained from the nearest tower ... center. c. It is not necessary to file a complete flight plan with the request for clearance, but pilots should state their intentions in sufficient detail to permit ATC to fit their flight into the traffic flow. The clearance will…