CT-Ing. (ES)
Landing Gear Doors
Inverse Deformation Method
The Main Landing Gear Door (MLGD) is a complex
mechanism with the principal function of covering the landing gear
during
flight. This complex element is composed of: a hydraulic opening system,
a gravitational opening system, and a hydraulic closing mechanism. Their
objective is to guarantee that: door shape is equal to the theoretical
aerodynamic shape in cruise flight, and that the minimum area opens while
the landing gear is extended. CT-Ingenieros are designing this
opening mechanism by means of the Inverse Finite Element Method in
static calculation with the aim of fulfilling the objectives described
above.
Opening Mechanism
The weight of the hydraulic opening mechanism could
be reduced by replacing the hinges with a compliant mechanism . The use
of a bistable mechanism could permit the reduction of the actuation load
needed and the energy required for the correct closing process. A
potentially
interesting solution is to develop an opening mechanism containing compliant elements
which opens under gravitational loading.
Click here to see a
movie of a simulation of the Main Landing Gear Doors opening.
