Large-thrust multiple acceleration type pneumatic ejector for carrier-based airplanes of airplane carrier

Abstract

The invention provides a pneumatic type ejector for carrier-based airplanes of an airplane carrier. A group of steel wire ropes are driven to shrink by a plurality of closed pneumatic cylinders at the same time, and a sliding shuttle on a takeoff runway is driven to slide through the shrinkage of the steel wire ropes, so that the carrier-based airplanes are pushed to take off in an ejecting mode. The structure comprises the carrier-based airplane takeoff runway, the sliding shuttle, the traction steel wire ropes, a plurality of pneumatic cylinder module components, high-pressure gas pipes and a resetting winch, wherein the pneumatic cylinder module components consist of fixed frameworks, the pneumatic cylinders, pistons, piston connecting rods, pulley frames, driving pulleys, anti-breaking pulleys and sliders; the cylinder bodies of the pneumatic cylinders are fixed in the fixed frameworks; the head parts of the pneumatic cylinders are arranged at intervals in a staggered and opposite mode; and the tail parts of the pneumatic cylinders are connected with the high-pressure gas pipes by electrically-controlled valves. Compared with the prior art, the large-thrust multiple acceleration type pneumatic ejector for the carrier-based airplanes of the airplane carrier is characterized in that: the large-thrust multiple acceleration type pneumatic ejector has a simple structure, low cost, light weight, a high power conversion rate and long service life, saves energy and can adapt to the launch of various carrier-based airplanes (including light aircrafts and unmanned aerial vehicles), and the power and the takeoff distance can be adjusted.

Description

technical field [0001] The invention relates to ancillary equipment for an aircraft carrier, in particular to a high-thrust multiplier and speed-up type pneumatic aircraft carrier aircraft catapult. Background technique [0002] As we all know, the most advanced carrier-based aircraft take-off method is steam catapult take-off. It can eject large-scale fixed-wing aircraft (such as early warning aircraft and anti-submarine aircraft) from the flight deck of an aircraft carrier, while the ski-jump deck cannot allow large aircraft such as early warning aircraft and anti-submarine aircraft to take off. The carrier-based aircraft steam catapult is a patent purchased by the United States from the United Kingdom and implemented for aircraft carriers. Currently, only the United States can produce it. The technical indicators of the American aircraft carrier-based steam catapult are that the length of the open cylinder is 70-98 meters, and the diameter of the piston is 475 mm, steam ...

AI Technical Summary

Problems solved by technology

[0003] The deficiencies that the steam catapult of prior art exists are 1) complex structure, high cost

The steam catapult in the United States adopts a parallel design of double slotted cylinders. The high temperature and high pressure steam only acts on two pistons with a diameter of 457mm. Only 4-6% of this steam is converted into the ejection power of the piston, and this 4% of the power is converted during the formation of the first ten meters of the piston, and the remaining 2% of the power is converted by the piston during the remaining 90 meters of travel. Inertial movement, if ejection is carried out at the minimum interval, it needs to consume 20% of the steam of the aircraft carrier boiler; 4) the complexity of the system will inevitably bring more operators, and a catapult requires about 120 operators and repair personnel

The four catapults require more than 500 operators and maintenance personnel, accounting for about 10% of the entire ship's establishment, and the amount of maintenance is large. The flight needs to be grounded after 400 to 500 ejections, and the ship's personnel will perform 1-2 days of maintenance); 5) The ejection power is high, and the power cannot be adjusted, so small aircraft (such as drones) cannot be ejected...

6) The fatal disadvantage is the use of slotted cylinder, the piston is directly linked with the shuttle through the slot, causing the cylinder to be easily deformed, and the slot needs special metal sealing strips to seal, the air tightness is reduced, the loss of steam is large, and the metal sealing strip is easy to Damage directly affects the service life of the ejection cylinder

Images