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Friday, January 6, 2023

on video Understanding Secondary Control Surfaces: Flaps, Slats - Slots, Spoilers, Balance Tabs & Trim Tabs!


  we look at high lift devices installed on an aircraft wing. We focus on 2 high lift devices: Flaps and Slats. We see the operation of these devices in different configurations and the impact of these configurations on an aircraft. 

We also look at the biggest concern when flying at low speeds: Stall. We see the variation of lift with the angle of attack and the variation of Stall Angle when flaps and slats are used. 

This video contains all the information about aircraft/airplane Flight Control Surfaces.

There are total 3 Flight Control Surfaces in any airplane.

1. Primary flight control surfaces

2. Secondary flight control surfaces

3. Auxiliary flight control surfaces

Primary Flight Control Surfaces have further controlling surface.

1. Aileron (Roll/Bank Control)

2. Elevator (Pitch Control)

3. Rudder (Yaw Control)

Secondary Control Surfaces

1. Trim Tabs (to make the airplane stable and to reduce air pressure on pilot's control yoke)

2. Balance Tabs (To reduce the air pressure on pilot's control stick)

Auxiliary Flight Control Surfaces

1. Flaps 

( a. Plain Flap; b. split flap; c. Slotted Flap & d. Fowler flaps) 

Commercial airplanes used Slotted Fowler Flaps

2. Spoilers

3. Slats & Slots

Flaps Lever

Spoiler Lever

Control Yoke

Rudder Pedals 

We cover all topics of Commercial Pilot Training

Technical Specific

Air Regulations

Aviation Meteorology

Technical General

Air Navigation

RTR (Aero)


  we look at high lift devices installed on an aircraft wing. We focus on 2 high lift devices: Flaps and Slats. We see the operation of these devices in different configurations and the impact of these configurations on an aircraft. 

We also look at the biggest concern when flying at low speeds: Stall. We see the variation of lift with the angle of attack and the variation of Stall Angle when flaps and slats are used. 

This video contains all the information about aircraft/airplane Flight Control Surfaces.

There are total 3 Flight Control Surfaces in any airplane.

1. Primary flight control surfaces

2. Secondary flight control surfaces

3. Auxiliary flight control surfaces

Primary Flight Control Surfaces have further controlling surface.

1. Aileron (Roll/Bank Control)

2. Elevator (Pitch Control)

3. Rudder (Yaw Control)

Secondary Control Surfaces

1. Trim Tabs (to make the airplane stable and to reduce air pressure on pilot's control yoke)

2. Balance Tabs (To reduce the air pressure on pilot's control stick)

Auxiliary Flight Control Surfaces

1. Flaps 

( a. Plain Flap; b. split flap; c. Slotted Flap & d. Fowler flaps) 

Commercial airplanes used Slotted Fowler Flaps

2. Spoilers

3. Slats & Slots

Flaps Lever

Spoiler Lever

Control Yoke

Rudder Pedals 

We cover all topics of Commercial Pilot Training

Technical Specific

Air Regulations

Aviation Meteorology

Technical General

Air Navigation

RTR (Aero)

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