Aircraft-carrier arresting cable system based on eddy current braking
An eddy current braking and blocking cable technology, applied in asynchronous induction clutch/brake, magnetic circuit shape/style/structure, stop device, etc., can solve the problems of high technical difficulty, high cost, complex structure, etc. Simple process, small influence and small moment of inertia
Inactive Publication Date: 2017-05-10
BEIJING UNIV OF TECH
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Problems solved by technology
[0003] In the prior art, most aircraft carriers use a hydraulic buffer arresting device, which includes a variety of precision control valves, dynamic seals, etc., with complex structures, high costs, and great technical difficulties
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[0025] Design an eddy current brake, the rotor and stator are made of low carbon steel, and the air gap length is 1.5mm. Other main parameters are as follows: stator outer diameter; stator outer inner diameter; stator inner outer diameter; stator inner diameter; brake width w=475mm; number of magnetic teeth; D=1000mm; coil turns N=1000 turns; The total weight of the four brakes is about 20 tons.
[0026] It is calculated by simulation that when the current I=45A, the average braking force F≈1300kN can be generated; assuming that the weight of the carrier-based aircraft is m=30000kg, and the landing speed does not consider eccentricity, yaw, air resistance, friction and other factors; through Calculated: average deceleration a=43m / s 2 ;Braking time, braking distance. The control cabinet can adjust the braking time and braking distance by adjusting the current.
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The invention discloses an aircraft-carrier arresting cable system based on eddy current braking, and belongs to the technical field of landing arresting of carrier aircrafts of aircraft carriers. When an aircraft lands and hooks an arresting cable, transmission shafts are driven by steel cables to rotate, and meanwhile rotators rotate along with rotating of the transmission shafts; as magnet exciting coils are powered on at the moment, the surfaces of stators rightly opposite to magnetic conductive teeth are cut through magnetic lines, and eddy currents are generated, resistance torque for arresting the rotors to continue to rotate is generated; the resistance torque is transferred to the arresting cable through the transmission shafts and the steel cables, and braking force of a carrier aircraft is formed; when baking is carried out, as the eddy currents are only generated on the stators, heat is only generated on the stators, and is taken away through cooling water in cooling water channels inside the stators; when baking is not required, exciting currents in the coils are powered off through a control cabinet, the coils cannot generate the magnetic lines at the moment, the eddy currents cannot be generated on the surfaces of the stators, and braking torque cannot be generated. The aircraft-carrier arresting cable system serves as a carrier-aircraft landing arresting device, the structure is simple, and controlling is convenient.
Description
technical field [0001] The invention relates to an aircraft carrier arresting cable system based on eddy current braking, and belongs to the technical field of aircraft carrier aircraft landing arresting. Background technique [0002] The flight speed of modern fixed-wing carrier-based aircraft is about 200-300km / h. In order to make it safely land on the deck of an aircraft carrier with limited length, an aircraft carrier blocking device must be installed. [0003] In the prior art, most aircraft carriers adopt a hydraulic buffer type arresting device, which includes multiple precision control valves, dynamic seals, etc., has a complex structure, high cost, and great technical difficulty. Contents of the invention [0004] The invention overcomes the deficiency of the hydraulic buffer type arresting device, and provides an aircraft carrier arresting cable system based on eddy current braking with simple structure, low cost and convenient control. [0005] The technical sc...
Claims
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IPC IPC(8): B64F1/02H02K49/04H02K1/20
CPCB64F1/02H02K1/20H02K49/04
Inventor 李德胜谢谋田金山郭文光叶乐志焦晨
Owner BEIJING UNIV OF TECH