Landing Gear System
Landing Gear System
Introduction to Landing Gear System:
Landing gear system is the most important system in the aircraft which works with the hydraulic system and without which an aircraft cannot land on the runway. The landing gear consists of a nose gear, left and right landing gears under the wing. The main role of landing gear system is the energy absorption during landing, braking and taxi control. The components of the system are as follows: * Strut * Shock Absorber * Extraction/retraction mechanism * Brakes * Wheel * Tyre
Diagram showing how each component is linked:
Figure 1
Figure 2
How The System Works?
Some small aircrafts such as Cessna 152 have fixed landing gear because it is a light aircraft and landing gear does not affect the flight. The larger aircrafts such as C-130 or fighter jets have retractable landing gear. The retractable landing gear helps the aircrafts in climbing into the higher atmosphere and also it reduces the drag in the flight. The image shows the components of a type of landing gear system. Some aircrafts are equipped with skis for landing in snowing conditions or floating on the water.
A retractable gear is the mechanism by which undercarriages retracts or flush into wings or fuselage to decrease drag in flight. In aircrafts, retractable gear mechanism is controlled by hydraulic fluids and in some aircrafts electrical system is used as well. The first retractable gear was designed by French pioneer of aviation named, Alphonse Penaud in 1876.
The system gets the pressure required from the pump which is driven by hydraulic fluid system. During landing, when the landing gear extracts, the hydraulic valves which controls the hydraulic fluid, releases the hydraulic pressure to unlock or open the doors holding individual landing gear. When the doors are opened, hydraulic pressure is sent down to the hydraulic actuator which is present in each gear which pushes the gear to extract allowing
Introduction to Landing Gear System:
Landing gear system is the most important system in the aircraft which works with the hydraulic system and without which an aircraft cannot land on the runway. The landing gear consists of a nose gear, left and right landing gears under the wing. The main role of landing gear system is the energy absorption during landing, braking and taxi control. The components of the system are as follows: * Strut * Shock Absorber * Extraction/retraction mechanism * Brakes * Wheel * Tyre
Diagram showing how each component is linked:
Figure 1
Figure 2
How The System Works?
Some small aircrafts such as Cessna 152 have fixed landing gear because it is a light aircraft and landing gear does not affect the flight. The larger aircrafts such as C-130 or fighter jets have retractable landing gear. The retractable landing gear helps the aircrafts in climbing into the higher atmosphere and also it reduces the drag in the flight. The image shows the components of a type of landing gear system. Some aircrafts are equipped with skis for landing in snowing conditions or floating on the water.
A retractable gear is the mechanism by which undercarriages retracts or flush into wings or fuselage to decrease drag in flight. In aircrafts, retractable gear mechanism is controlled by hydraulic fluids and in some aircrafts electrical system is used as well. The first retractable gear was designed by French pioneer of aviation named, Alphonse Penaud in 1876.
The system gets the pressure required from the pump which is driven by hydraulic fluid system. During landing, when the landing gear extracts, the hydraulic valves which controls the hydraulic fluid, releases the hydraulic pressure to unlock or open the doors holding individual landing gear. When the doors are opened, hydraulic pressure is sent down to the hydraulic actuator which is present in each gear which pushes the gear to extract allowing