STABILITY
THE CHARACTERISTIC OF AN AIRPLANE IN FLIGHT THAT CAUSES IT TO RETURN TO A CONDITION OF EQUILIBRIUM OR STEADY FLIGHT AFTER BEING DISTURBED.
WHAT IS STABILITY?
THE COMMON REFERENCE POINT FOR THE THREE AXES OF FLIGHT.
WHAT IS THE CENTER OF GRAVITY?
THIS CONTROL SURFACE CONTROLS MOVEMENT AROUND THE LATERAL AXIS.
WHAT IS THE ELEVATOR (OR STABILATOR)?
THE POINT ALONG THE WING CHORD LINE WHERE LIFT IS CONSIDERED TO BE CONCENTRATED.
WHAT IS THE CENTER OF PRESSURE (SOMETIMES REFFERED TO AS TE CENTER OF LIFT)?
WHEN THE AIRPLANE IS PROPERLY LOADED, THE AIRPLANE IS SLIGHTLY NOSE HEAVY WHICH IS OFFSET BY _____.
WHAT IS TAIL DOWN FORCE?
THE INITIAL TENDENCY OF AN AIRPLANE TO RETURN TO THE POSITION FROM WHICH IT WAS DISPLACED.
WHAT IS POSITIVE STATIC STABILITY?
THE CHARECTERISTIC OF AN AIRPLANE THAT PERMITS YOU TO MANEUVER IT EASILY AND ALLOWS IT TO WITHSTAND THE STRESS RESULTING FROM THE MANEUVERS.
WHAT IS MANEUVERABILITY?
WHEN YOU DEFLECT THE AILERONS TO BEGIN A TURN, THEY CREATE AN IMMEDITATE ROLLING MOVEMENT AROUND THIS AXIS.
WHAT IS THE LONGITUDINAL AXIS?
YOU CONTROL THE _____OF THE AIRPLANE BY WHAT YOU LOAD INTO IT AND WHERE YOU PUT IT.
WHAT IS THE CG (CENTER OF GRAVITY)?
STABILITY ABOUT THE AIRPLANES LONGITUDINAL AXIS, WHICH EXTENDS NOSE TO TAIL.
WHAT IS LATERAL STABILITY?
GENERAL AVIATION AIRPLANES ARE DESIGNED TO HAVE THIS TYPE OF STABILITY.
WHAT IS POSITIVE AND DYNAMIC STABILITY?
THE CAPABILITY OF AN AIRPLANE TO RESPOND TO PILOT CONTROL INPUTS WITH REGARD TO ATTITUDE AND FLIGHT PATH?
WHAT IS CONTROLLABILITY?
APPLYING PRESSURE TO THE RUDDER PEDALS CREATES AN AERODYNAMIC FORCE THAT ROTATES THE AIRCRAFT AROUND THIS AXIS.
WHAT IS THE VERTICAL AXIS?
FOR AN AIRPLANE TO BE CONTROLLABLE, THE CG MUST BE LOCATED WITHIN A REASONABLE DISTANCE FORWARD OR AFT OF AN OPTIMUM POSITION.
WHAT IS THE CG RANGE?
THE MOST COMMON DESIGN FOR LATERAL STABILITY.
WHAT IS WING DIEHEDRAL? (THE UPWARD ANGLE OF THE AIRPLANES WING)
AN AIRPLANE RETURNING TO ITS ORIGINAL STEADY STATE OVER TIME.
WHAT IS POSITIVE DYNAMIC STABILITY?
AN AIRCRAFT OPERATES IN A THREE DIMENSIONAL ENVIRONMENT AND MOVEMENT TAKES PLACE AROUND ONE OR MORE OF THESE.
WHAT ARE THE 3 AXES OF FLIGHT?
THE __________ STABILITY OF AN AIRPLANE INVOLVES THE TENDENCY OF THE AIRPLANE TO MOVE ABOUT ITS LATERAL AXIS.
WHAT IS LONGITUDINAL STABILITY?
IN THIS CASE, THE AIRPLANE IS UNSTABLE IN PITCH REGARDLESS OF AIRSPEED.
WHAT IS THE CG AFT OF THE APPROVED CG RANGE?
AS IN SAILBOATS, THE SIDE AREA OF THE FUSELAGE AND THE VERTICAL FIN ALSO PROVIDE LATERAL STABILITY.
WHAT IS THE KEEL EFFECT?
THE CHARACTERISTIC OF AN AIRPLANE TO MOVE FURTHER AWAY FROM THE ORIGINAL STEADY STATE OVER TIME.
WHAT IS NEGATIVE DYNAMIC STABILITY?
LONGITUDINAL,LATERAL AND VERTICAL.
WHAT ARE THE THREE AXES OF FLIGHT?
AN IMPORTANT CONSIDERATION WHEN DESIGNING A LONGITUDINALLY STABLE AIRPLANE.
WHAT IS THE BALANCE BETWEEN THE CG, THE CENTER OF PRESSURE ON TEH WING, AND THE TAIL DOWN FORCE?
THE MOST CRITICAL FACTOR IN SPIN RECOVERY.
WHAT IS THE AFT CG LIMIT?
ROLLING AND YAWING OSCILLATIONS CAUSED BTY EITHER CONTROL INPUTS OR BY WIND GUSTS.
WHAT IS DUTCH ROLL?