Resistance self-adaptive variable structural cavitator

A cavitator and self-adaptive technology, applied in the direction of hydrodynamic characteristics/hydrostatic characteristics, ships, hulls, etc., can solve the problems of unstable navigation of aircraft, increase ineffective resistance, etc., and achieve the goal of reducing the wet state Drastic changes, improved range, improved stability

Active Publication Date: 2017-11-03
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In view of the above analysis, the present invention aims to provide a resistance self-adaptive variable structure cavitator, which is used to solve the problem of aircraft navigation instability, The problem of increasing invalid resistance

Method used

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  • Resistance self-adaptive variable structural cavitator
  • Resistance self-adaptive variable structural cavitator
  • Resistance self-adaptive variable structural cavitator

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Embodiment

[0060] In this embodiment, a resistance self-adaptive variable structure cavitator, such as figure 1 As shown, it includes a conical cavitator part 1, a movable part 2, and an elastic part 3. The conical cavitator part 1 includes a conical head and a cylindrical tail, and one end surface of the cylindrical tail is connected to the conical head. The bottom surfaces are connected, and the diameter of the cylindrical tail is smaller than the diameter of the bottom surface of the conical head, the elastic part 3 is located at the end of the cylindrical tail away from the conical head, and the movable part 2 is wrapped around the outside of the conical cavitator part 1, And it can move between the elastic part 3 and the conical head, and the movable part 2 and the elastic part 3 adopt a clearance fit with a small gap. When the resistance adaptive variable structure cavitator is used in ordinary supercavitating aircraft, the conical cavitator part 1 and the movable part 2 are made o...

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Abstract

The invention discloses a resistance self-adaptive variable structural cavitator. The resistance self-adaptive variable structural cavitator comprises a conical cavitator part, a movable part and an elastic part. The conical cavitator part comprises a conical head part and a cylindrical tail part. The cylindrical tail part is connected with the bottom surface of the conical head part. The elastic part is located at the cylindrical tail part and located at the end, away from the conical head part, of the cylindrical tail part. The movable part envelops the outer side of the conical cavitator in a winding mode, and can slide at the cylindrical tail part. The resistance self-adaptive variable structural cavitator has the beneficial effects that under different ship speeds and ship depths of a aircraft, a structure is adjusted through resistance, dimension of cavitation is maintained effectively, stress of the aircraft is stable, and drastic changes of a wet state of the aircraft caused by speed change are reduced; the impact of changes of the cavitation number on resistance is reduced, and the resistance fluctuation range of the aircraft is reduced; and when the aircraft is restricted by water entry impact, the structure is changed through elastic materials, the buffing time of the aircraft is increased, the water entry impact force is reduced, and the safety of water entry is improved.

Description

technical field [0001] The invention relates to the field of cavitator design in the supercavitation technology, in particular to a resistance self-adaptive variable structure cavitator. Background technique [0002] When the speed of the underwater vehicle reaches a certain value, due to the change of the pressure distribution on the surface, the pressure may be lower than the vapor pressure of water in some positions, so that the water changes from a liquid state to a gaseous state and covers the surface of the vehicle. Using this principle, various countries have conducted research on its underwater drag reduction capabilities, and have developed supercavitation vehicles. [0003] Most surfaces of a supercavitating vehicle are surrounded by cavitation, which reduces drag. The part of the head used to stabilize cavitation is the cavitator, which is also the most important part of the entire aircraft to maintain stable contact with water. [0004] The cavitator is one of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B1/38
CPCB63B1/38B63B2001/382Y02T70/10
Inventor 栗夫园李国中马增帅赵海龙
Owner BEIJING MECHANICAL EQUIP INST
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