Combined disc-type cavitation structure for underwater navigation of underwater vehicle

A combined disc-type cavitation structure for underwater navigation of an underwater vehicle, comprising a underwater vehicle with a front end thereof separably connected with a fairing disposed coaxially with the underwater vehicle, wherein a plurality of cavitators with successively increasing outer diameters are in turn arranged inside the fairing from a front end to a rear end of the fairing, the plurality of cavitators are arranged coaxially and axes thereof coincide with an axis of the underwater vehicle,

• a cavitator receiving groove, matching a cavitaor located at a front side in every two adjacent cavitators, is disposed at a center of a front surface of a cavitator located at a rear side in every two adjacent cavitators, and the plurality of cavitators are integrated into a whole through the cavitator receiving groove,
• a front-most cavitator is a first cavitator and all the cavitators behind the first cavitator are second cavitators, the first cavitator is connected to the underwater vehicle through a buffer configured to buffer an acting force between the underwater vehicle and water when the underwater vehicle enters the water, and each of the second cavitators is connected to the underwater vehicle through a driving device configured to axially move its corresponding second cavitator.