What is stick force per g?
The maneuvering stability, or stick force per g, is higher at a forward CG, regardless of altitude. In other words, at any altitude, the stick force per g is higher when the CG is forward than when the CG is further aft. This has significant consequences for steep turning maneuvers.
What is stick force?
: the force exerted on the control column by the pilot of an airplane in flight.
What is stick force gradient?
The inner control loop (force) acts as a surrogate for pitch attitude and this in turn acts as a surrogate for airspeed management. The stick force gradient is used for precise and timely management of airspeed, essential for stall and LoC-I avoidance.
How do you calculate VMC?
therefore, when the critical engine propeller is windmilling at the low pitch, high rpm blade angle. VMC is determined with the critical engine propeller windmilling in the takeoff position, unless the engine is equipped with an autofeather system.
What is maneuver point?
Definition of maneuver point: that point on the con- figuration where the location of the e.g. would result in the control force required per gr maneuver to be equal to zero.
What is stick force stability?
An aircraft has stick force stability if deflecting the stick further away from trimmed position, requires a larger force: the stick feels as if it is loaded by a spring. Easy to achieve with irreversible flight controls, which are loaded by a mechanical spring.
What does stick free mean?
The condition where the hinge moment is equal to zero is called the “stick free” condition. Under these conditions, the aerodynamic characteristics including the neutral point change. All stick free conditions are obtained by setting the hinge moment equal to zero.
What is stick-fixed stability?
In the analysis of stick-fixed longitudinal static stability it is assumed that the elevator deflection remains constant even after the disturbance. The analysis of the longitudinal static stability when the elevator is free to rotate about its hinge line is called stick-free stability.
What is VMC?
Visual meteorological conditions (VMC) are the meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling equal to or better than specified minima. ( ICAO Annex 2: Rules of the Air) VMC are detailed in ICAO Annex 2.
What is VMC airspeed?
WHAT IS VMC (Minimum Controllable Airspeed)? Vmc is the speed at which the rudder no longer has the authority to overcome the yaw caused by the critical engine being inoperative, under specific criteria mandated by the FAA. The lower Vmc is, the safer the aircraft is.
What is the stick force per g called?
The stick force per g is also called the stick force gradient. It is clear from the equations that thestick force gradient (with respect to the g loading) has the following characteristics: Note that if the vehicle densities were the same, the stick force per g would be proportional to thescale factor to the 4thpower,.
How is the stick force related to elevator angle per g?
Stick Force Per g Related to elevator angle per g is the stick force per g. The stick force per g is determined by the increment in the hinge moment. Again, we will look at the change in the stick force from straight and level flight. This change is caused by the change in the hinge moment and can be represented as:
What should the stick force be on an airliner?
Designing the stick force per G on an airliner to be around 50 lb/g helps ensure non-aggressive normal maneuvering while preserving the pilot’s ability to perform emergency maneuvers when necessary. Let’s take our cockpit control force example in the other direction.
What are stability and control stick free moments?
Stability and Control Stick Free Characteristics Hinge Moments Each control surface on an aircraft has a hinge of some sort. By deflecting the control, there is an aerodynamic moment about that hinge.