Tactair Landing Gear/Door Control valves feature a 4-Way, 3-Position design which has proven reliability and robustness. One valve can control a landing gear system or multiple valves can be incorporated into a system for separate nose landing gear, main landing gear, and landing gear door control. All Tactair spool and sleeve valves feature a hardened spool and sleeve assembly which is highly resistant to wear and provides longevity. Solenoids can be either single or dual coil design and all incorporate reverse-recovery diodes for electrical protection.

1. AIRCRAFT MAINTENANCE
Mohammed Rameez
10SU20AM010
Topic : Landing Gear System

2. Contents
Introduction
Types of Landing Gears
Components of Landing Gear
Functioning of Landing Gear
Conclusion

3. Introduction
An aircraft's landing gear system is
an essential component that
supports the weight of the aircraft
during takeoff, landing, and ground
operations. Its several retractable
and accessible parts enable safe
landings and takeoffs on a variety of
surfaces.

4. Types of Landing
Gear
Main Landing Gear Nose Landing Gear

5. Main Landing Gear
The main landing gear supports
the majority of the aircraft's
weight during ground
operations and landing.
It is made up of large wheels or
landing gear assemblies that
are situated beneath the wings
or fuselage of the aircraft.
Typically, main landing gear
assemblies include shock
absorbers or struts to reduce
the impact forces during
landing and provide comfort
for the aircraft.

6. Nose Landing Gear
This component of the aircraft bears the
weight of the nose portion and is situated
at the front.
For ground operations, it usually comprises
of a single wheel or landing gear assembly
with shock absorbers or struts that absorb
landing pressures and offer stability.

7. Components of Landing Gear
Steering
Mechanisms
Wheels and Tires
Braking System
Landing Gear Struts
Shock Absorbers

8. Steering Mechanisms
Aircraft movement on the ground is
made possible by the landing gear
steering mechanism, which is
normally operated by the pilot using
separate hands or rudder pedals. It is
made up of hydraulic systems or links
that transfer control inputs to the nose
gear. For safety, upkeep and
inspection are essential.

9. Shock absorbers
As the airplane and its occupants land, impact
forces are absorbed by shock absorbers in the
landing gear systems. To reduce the shock of
landings, they are made up of hydraulic cylinders
that compress fluid.

10. Braking system
By creating friction on the wheels or discs, the
aircraft braking system reduces speed and
comes to a stop. It consists of cockpit controls,
hydraulic systems, and brake assemblies.
Anti-skid devices stop skidding, allowing for
safer braking.

11. Wheels and tyres
The aircraft's wheels and tires facilitate ground
movement, support the aircraft's weight, and
act as a cushion during landings. Because of
their sturdy construction and ongoing
maintenance needs, they are not as safe as they
could be.

12. Landing gear struts
Landing gear struts, which are usually hydraulic
cylinders, support the weight of the aircraft and
provide a smoother impact by absorbing shock
during landings. They have several designs,
such as fixed or retractable configurations and
single or multiple struts, depending on the kind
of aircraft and the requirements of operation.

13. Functioning of Landing Gear
Extension and Retraction :
Extension and retraction of landing gear involve
activating hydraulic or electric systems to move
the gear in or out, while monitoring indicators for
confirmation. It's crucial for safe takeoff, landing,
and ground operations.

14. In short, the landing gear system is crucial for
safe aircraft operations, providing support,
stability, and shock absorption during
takeoff, landing, and taxiing. Regular
maintenance is essential, and advancements
in technology enhance its efficiency and
safety.
Conclusion

15. Thank You