Tapered sockets for aircraft engine mount assemblies
AssigneeBell Textron Inc.
InventorsBruce Bennett Bacon, John Elton Brunken, Jr., Tyler Wayne Baldwin
Life of this patent
Estimating the term…
Abstract
An engine mount assembly for coupling an engine to an airframe. The engine mount assembly includes a torsion bar coupled between the engine and the airframe. The torsion bar has upper and lower tapered bosses. Upper and lower arm assemblies couple the engine to the torsion bar. Each arm assembly has an end bell crank with a tapered socket that is adapted to receive a respective tapered boss therein to secure the end bell cranks to the torsion bar such that the end bell cranks rotate with the torsion bar responsive to movements of the engine.
Claims20
An engine mount assembly for coupling an engine to an airframe, the engine mount assembly comprising:
- a torsion bar coupled between the engine and the airframe, the torsion bar having at least one end including a tapered boss;
- at least one arm assembly coupling the at least one end of the torsion bar to the engine, the at least one arm assembly including an end bell crank having a tapered socket;
- and
- a lateral movement control assembly coupled between the torsion bar and the airframe, the torsion bar rotating in response to lateral movement of the engine;
- wherein the tapered socket of the end bell crank is adapted to receive the tapered boss on the at least one end of the torsion bar to secure the end bell crank to the torsion bar such that the end bell crank rotates with the torsion bar responsive to movements of the engine.
A rotorcraft comprising:
- an airframe;
- an engine;
- an engine mount assembly adapted to mount the engine to the airframe, the engine mount assembly including:
- a torsion bar having at least one end including a tapered boss;
- at least one arm assembly coupling the at least one end of the torsion bar to the engine, the at least one arm assembly including an end bell crank having a tapered socket;
- and
- a lateral movement control assembly coupled between the torsion bar and the airframe, the torsion bar rotating in response to lateral movement of the engine;
- wherein the tapered socket of the end bell crank is adapted to receive the tapered boss on the at least one end of the torsion bar to secure the end bell crank to the torsion bar such that the end bell crank rotates with the torsion bar responsive to movements of the engine.
A tiltrotor aircraft having a helicopter mode and an airplane mode, the tiltrotor aircraft comprising:
- an airframe including a fuselage, a wing and a nacelle;
- an engine disposed within the nacelle;
- an engine mount assembly adapted to mount the engine to the airframe, the engine mount assembly including:
- a torsion bar having at least one end including a tapered boss;
- at least one arm assembly coupling the at least one end of the torsion bar to the engine, the at least one arm assembly including an end bell crank having a tapered socket;
- and
- a lateral movement control assembly coupled between the torsion bar and the airframe, the torsion bar rotating in response to lateral movement of the engine;
- wherein the tapered socket of the end bell crank is adapted to receive the tapered boss on the at least one end of the torsion bar to secure the end bell crank to the torsion bar such that the end bell crank rotates with the torsion bar responsive to movements of the engine.
Dependencies are inferred from the claim text.