Shock strut

Definition

A shock strut is a component of an aircraft's landing gear system that absorbs and dampens the impact forces experienced during landing and takeoff. It combines the functions of a shock absorber and a structural support, allowing for a smoother landing by reducing the loads transmitted to the airframe and enhancing the overall stability of the aircraft during ground operations.

5 Must Know Facts For Your Next Test

1. Shock struts are typically filled with hydraulic fluid and use a piston mechanism to control the rate of compression and rebound during landings.
2. They play a crucial role in ensuring passenger comfort by minimizing vibrations felt within the cabin when an aircraft is on the ground.
3. Shock struts help protect critical components of the aircraft by reducing the forces transmitted through the landing gear upon impact with the runway.
4. Different aircraft may have shock struts designed specifically for their weight and performance characteristics, tailored to handle varying impact loads.
5. Routine inspections and maintenance of shock struts are essential for ensuring safety and reliability during ground operations.

Review Questions

• How do shock struts contribute to the overall safety and performance of an aircraft during landing?
  • Shock struts are vital for maintaining safety and performance during landing as they absorb impact forces, reducing stress on the airframe. By dampening vibrations and controlling the rate of compression, they ensure a smoother touchdown which minimizes the risk of structural damage. This not only enhances passenger comfort but also extends the lifespan of the aircraft's components, making effective shock struts essential for safe landings.
• Discuss how shock struts differ from regular shock absorbers in their function within landing gear systems.
  • Shock struts differ from regular shock absorbers primarily in that they serve a dual purpose. While regular shock absorbers primarily dampen motion to improve ride quality, shock struts also provide structural support for the landing gear assembly. They must handle both the dynamic forces during landing and takeoff while contributing to the overall rigidity and integrity of the landing gear system. This unique combination makes shock struts critical components in aviation engineering.
• Evaluate the importance of routine maintenance on shock struts and its impact on aircraft operational reliability.
  • Routine maintenance on shock struts is crucial for ensuring operational reliability as it directly affects an aircraft's performance during ground operations. Neglected or poorly maintained shock struts can lead to increased wear on other landing gear components, heightened vibrations, and potential failure during landings. Regular inspections help identify issues like fluid leaks or wear in seals, allowing for timely repairs that maintain both safety standards and operational efficiency in flight operations.

Related terms

Landing Gear:

The system of components that supports an aircraft on the ground, including wheels, brakes, and the structure that connects them to the airframe.

Shock Absorber:

A device that dampens and absorbs the energy from impacts, preventing excessive motion and vibration that can affect the stability of the aircraft.

Strut: A structural component that supports or strengthens other parts of an aircraft, often found in landing gear systems to provide necessary support and stability.