Spring segmented ejection system for shipboard aircraft of aircraft carrier

Abstract

The technology relates to an aircraft carrier shipboard aircraft catapulting technology, a shipboard aircraft catapulting system is core equipment of an aircraft carrier, the purpose of pushing a shipboard aircraft to accelerate is achieved by compressing a spring to store energy and releasing the energy during catapulting, and the shipboard aircraft catapulting system adopts two materials: 1, a high-quality metal spring is used as an energy storage system; 2, the carbon nanotube spring is used as an energy storage system; the springs are of a parallel connection and series connection structure, the propelling distance is divided into N sections, each section is a spring set composed of one spring set (N springs), and the spring sets are connected in series to form the whole propelling system (segmented relay). Part or all energy in each group of springs can be compressed or released in the catapulting process according to different catapulting weight and speed requirements, so that the requirements of different aircraft types on the catapulting process are met, and the catapulting device can also be used for land airports or occasions where the length of an aircraft take-off runway is limited, can also be made into an independent land aircraft take-off and catapulting special runway (about 100 meters in length), and can be used for catapulting different aircrafts. The vehicle-mounted system is composed of N vehicle-mounted systems and can be spliced in a short time according to needs, and the reduced structure can also be used for ejection of a vehicle-mounted unmanned aerial vehicle or ejection for other purposes.

Description

TECHNICAL FIELD

[0001] The present technology relates to the aircraft carrier aircraft catapult technology, the aircraft catapult system is the core equipment of the aircraft carrier, which requires accelerating the aircraft to the take-off speed (70-100 m / s) in a short distance (about 100 meters) and a short time (2-3 seconds), directly determines the combat capability of the aircraft carrier, and the currently applied technologies mainly include the steam catapult and the later developed electromagnetic catapult. BACKGROUND

[0002] The present application utilizes the spring compression energy storage and releases the energy during the catapult to achieve the purpose of pushing the aircraft to accelerate.

[0003] The energy density of the high-quality metal spring can reach 0.4 WH / KG, and the specific energy density of the carbon nanotube (CNT) spring can reach 583 WH / KG. According to the relevant data, the kinetic energy required for catapulting a 40-ton aircraft (accelerating to 85 m / s) is about 150 MJ, and the system efficiency is about 42,000 WH.

[0004] To store 150 MJ of energy, the weight of the metal spring is about 100 tons (excluding auxiliary mechanisms), and the theoretical weight of the carbon nanotube spring is only about 100 kg (excluding auxiliary mechanisms).

[0005] The current data: the weight of the electromagnetic catapult system is about 325 tons, the volume is 500 cubic meters, and the efficiency is 60-80%; the weight of the steam catapult system is about 500 tons, the volume is 1000 cubic meters, and the efficiency is 4-6%.

[0006] The weight and volume of the catapult system made of high-quality metal springs will not exceed that of the electromagnetic catapult system, and the efficiency is higher (90%), and the structure is simpler and more reliable (100,000 times of life).

[0007] The advantage of the catapult system made of carbon nanotube springs is more obvious, and the weight and volume are expected to be only a few percent of that of the electromagnetic catapult system. SUMMARY

[0008] The present application adopts two materials: 1. high-quality metal springs as energy storage materials; 2. carbon nanotube springs as energy storage materials, but not limited to these two materials.

[0009] The spring catapult system of the present application adopts the parallel connection and series connection scheme of springs, divides the propulsion distance of about 100 meters into N sections, each section is composed of a group (N springs) of springs, each spring group is connected in series to form the entire propulsion system (segment relay). According to the requirements of different weights and speeds of the catapult, part or all of the springs in each group can be released during the catapult process to meet the requirements of different aircraft models during the catapult process. Each spring group can be composed of springs with different K values to meet the requirements of different stages of the catapult process.

[0010] Because the spring group is designed in series and segmented, and the spring group is composed of multiple springs, the manufacturing of the ejection system becomes feasible and simple, and the ejection system can not only be made into a linear ejection, but also can meet the curved ejection of the aircraft carrier.

[0011] Under normal circumstances, the ejection system is compressed or stretched by the motor and the speed reducer through the power or other power to store energy. A set of mechanical speed reducer can also be designed to compress or stretch the spring of the spring ejection system by manpower in the abnormal situation (power system interruption, etc.) to store energy.

[0012] In addition to being used for the aircraft carrier aircraft ejection system, the application can also be used for the land airport or the occasion where the length of the aircraft take-off runway is limited, and can also be made into an independent land aircraft take-off special ejection runway, which is composed of N vehicle-mounted systems and can be spliced into short time according to the needs.

[0013] The reduced structure of the application can also be used for the vehicle-mounted unmanned aerial vehicle ejection or other use ejection.

[0014] The carbon nanotube spring used in the system of the application still needs further research and development on this emerging material.

Claims

1. To achieve the demand of aircraft catapult on aircraft carrier by spring compression or extension energy storage.

2. The catapult system adopts the mode of parallel and series spring groups to divide the propulsion distance into N segments, and adopts the relay mode to achieve the complete catapult process, and can perform linear or curved catapult.

3. The spring group is composed of N springs, and can compress or release part or all spring energy according to needs during operation to meet different catapult requirements.

4. The spring materials include but are not limited to metal spring materials and carbon nanotube spring materials.

5. The catapult system is not only used for aircraft catapult system on aircraft carrier, but also can be used for land aircraft (manned or unmanned) catapult take-off and other objects that need to be catapulted after redesign according to needs.