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Device and method for ejecting shipboard aircraft by combining secondary springs

A two-stage spring and carrier-based aircraft technology, applied in the direction of launch/drag transmission, can solve the problems of low acceleration, high acceleration, pilot fainting, etc., and achieve the effect of preventing fainting and satisfying the speed of leaving the ship

Pending Publication Date: 2017-05-31
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of spring ejection is that the initial acceleration of ejection is too high, the pilot will faint, and the acceleration in the later stage is too low, and the speed of carrier-based aircraft leaving the ship does not meet the requirements

Method used

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  • Device and method for ejecting shipboard aircraft by combining secondary springs
  • Device and method for ejecting shipboard aircraft by combining secondary springs
  • Device and method for ejecting shipboard aircraft by combining secondary springs

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Embodiment

[0031] The wire diameter of the primary spring is 0.235m, the outer diameter is 1.2m, the number of turns is 84, the total length is 39.5m, the compressed length is 20m, and the compressed length is 19.5m. , compared with the solid spring, the mass can be reduced by 36%. Considering the mass of the carrier aircraft is 50T, the maximum acceleration is 99m / s^2, and the maximum speed is 160km / h. The wire diameter of the secondary spring is 0.15m, the outer diameter is 0.7m, the number of turns is 93, the total length is 27m, the compressed length is 13m, and the compressed length is 14m. , compared with the solid spring, the mass can be reduced by 49%. The two secondary springs push the carrier aircraft and the primary spring at the same time, with a maximum acceleration of 60.5m / s^2 and a maximum pushing speed of 101km / h. Ultimately, the carrier-based aircraft can obtain a departure speed of 160+101=261km / h. Calculate the ejection total stroke 20+13=33m according to the total c...

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Abstract

The invention discloses a device and a method for ejecting a shipboard aircraft by combining secondary springs with effects of limiting ejection acceleration peak and guaranteeing an off-ship speed of the shipboard aircraft. The device comprises a rebound beam and a brake, wherein spring grooves are formed between the rebound beam and the brake; a primary ejection spring and two secondary ejection springs are mounted in the spring grooves; the primary ejection spring and the two secondary ejection springs are linked through a linkage frame; the linkage frame comprises a first concave part and two second concave parts; the first concave part is nested at the bottom of the primary ejection spring; the second concave parts are nested on the tops of the secondary ejection springs; a top plate is arranged on the top of the primary ejection spring; a first steel rope is connected between the top plate and the rebound beam; second steel ropes are connected between the second concave parts and the rebound beam; electromagnet disconnectors are respectively arranged on the first steel rope and the second steel ropes; a first winch and a second winch are arranged on the rebound beam; the first winch is connected with the first steel rope; and the second winch is connected with the second steel ropes.

Description

technical field [0001] The invention belongs to the technical field of carrier-based aircraft take-off, and in particular relates to a device and method for ejecting a carrier-based aircraft with two-stage springs. Background technique [0002] The way for carrier-based aircraft to leave the ship mainly includes ski-jump take-off and ejection. Compared with ski-jump take-off, ejection has obvious combat advantages. At present, steam ejection and electromagnetic ejection are mainly used on aircraft carriers. The performance requirements under high temperature and high pressure are high, and our country has not fully mastered this technology yet. The electromagnetic ejection technology is complicated. Although the model test led by Academician Ma Weiming of the Naval University of Engineering has achieved initial success, the actual effect of the actual ship and aircraft has yet to be verified. Compared with steam ejection, spring ejection has the advantages of low cost of us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F1/06
CPCB64F1/06
Inventor 许年春许家琪夏正荣施坚许小年
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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