Turboelectric arresting gear
First Claim
1. A system for controlling the pay out tension of a line used to decelerate a moving object, said system comprising:
- an elongated shaft defining a rotation axis;
a drum configured to allow a portion of the line to be wound thereon, said drum mounted on said shaft for rotation about said axis;
an energy-dissipating fluid turbine mounted on said shaft for creating a decelerating torque on said shaft when said line is pulled by the moving object; and
an electric motor mounted on said shaft for creating a decelerating torque on said shaft when said line is pulled by the moving object.
1 Assignment
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Accused Products
Abstract
An arresting gear for quickly decelerating a moving object includes an elongated shaft that defines a rotation axis. A tapered drum that is wound with a purchase cable is mounted on the shaft for rotation about the axis. The drum and the shaft are rotated during the pay out of cable from the drum as the moving object engages and then pulls on the cable. The arresting gear includes an energy-dissipating fluid turbine, such as a water twister, that is mounted on the shaft to apply a torque on the shaft that acts to decelerate the rotating shaft. To complement the energy-dissipating fluid turbine, an electric motor is coupled to the shaft for creating a decelerating torque on the shaft. An electric motor control system is configured to use motor rotation feedback from the electric motor to pay out the cable from the drum at a substantially constant tension.
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Citations
20 Claims
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1. A system for controlling the pay out tension of a line used to decelerate a moving object, said system comprising:
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an elongated shaft defining a rotation axis;
a drum configured to allow a portion of the line to be wound thereon, said drum mounted on said shaft for rotation about said axis;
an energy-dissipating fluid turbine mounted on said shaft for creating a decelerating torque on said shaft when said line is pulled by the moving object; and
an electric motor mounted on said shaft for creating a decelerating torque on said shaft when said line is pulled by the moving object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An arresting gear comprising:
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a pendant positionable for engagement with an arresting hook on a landing aircraft;
a first line and a second line, each line extending from said pendant;
a first arresting engine coupled with said first line; and
a second arresting engine having a shaft coupled to said second line, said second arresting engine having an energy-dissipating fluid turbine mounted on said shaft for creating a decelerating torque on said shaft when said second line is pulled by the landing aircraft and an electric motor mounted on said shaft for creating a decelerating torque on said shaft when said second line is pulled by the landing aircraft. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An arresting engine for controlling the pay out of a line used to arrest a landing aircraft, said arresting engine:
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a shaft;
a means for coupling the line to said shaft wherein said shaft rotates during pay out of said line from said shaft;
an energy-dissipating fluid turbine for creating a decelerating torque on said shaft during pay out of said line from said shaft; and
a motor for creating a decelerating torque on said shaft during pay out of said line from said shaft. - View Dependent Claims (19, 20)
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Specification