aircraft primary control

8/18/2019 Aircraft Primary Control

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Aircraft Primary Control

Systems


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Learning Outcomes & Objective

• To attain the knowlege on the aircraft!rimary flight control system"

• At the en of the session# the caniate

must be able to answer a short oral $ui%"

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Terminologies• Angle of attack( The angle between the wing

chor line an relative airflow"

• Sli! or ski! ( Aircraft eviates outwar or inwar

from its turning !ath"• )ank( Cor!orate turning of the aircraft with an

incline angle"

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Aircraft Stability an Control

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• An aircraft nees a!!ro!riate controllabilityan the best !ossible stability in its flight"

• Stability( resistance to change from its initial

state of motion# it refers to how an aircraft

res!ons to changes in angle of attack# sli! or

bank from steay moe of flight"

• Control( controllability or maneuverability is the

res!onse of the control in!uts from the !ilot"


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Aircraft Stability an Control

• The stability an control are very mucho!!osites"

• An aircraft without sufficient stability will be

ifficult# !ossibly even angerous to fly" Onthe other han if the aircraft is too stable

that it cannot be controlle that will also be

angerous"

• Therefore# the esign of the aircraft

becomes a com!romise between control

an stability"

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Aircraft control a-es

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• /eference frame in stuying the aircraftcontrol an stability which is imaginary

attache to the aircraft"

• These three reference a-es are rightangle at each other an !ass through the

centre of gravity of the aircraft"

• Any motion of the aircraft can beirectional an0or rotational movements in

these a-es with many !ossibilities of"


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Aircraft control a-es


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Aircraft control terms

• Pitch

• 2aw

• /oll

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Pitching • The motion of the aircraft rotation about the

lateral a-is 4 nose5u! or nose5own6"



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2aw

• 2aw is the rotation of an aircraft about thevertical a-is"



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/oll• The rotation of the aircraft about the

longituinal a-is"



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Primary :light Controls

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Ailerons

•;sually mounte on the T< of the wingnear the wing ti!"

•!rovie lateral 4or roll6 control of the

aircraft"

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/uer

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• >ounte on the vertical tail!lane an

!rovies the irectional control of the aircraft

about the vertical 4or normal6 a-is"


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?ui%

• Label Three major a-es an !rimarycontrol surface systems for them in the

given iagram"


aircraft primary control

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