Waterjet Propulsion

Waterjet Propulsion Low-poly 3D model

Description

A pump-jet, hydrojet, or water jet is a marine system that produces a jet of water for propulsion. The mechanical arrangement may be a ducted propeller (axial-flow pump), a centrifugal pump, or a mixed flow pump which is a combination of both centrifugal and axial designs. The design also incorporates an intake to provide water to the pump and a nozzle to direct the flow of water out of the pump. A pump-jet works by having an intake (usually at the bottom of the hull) that allows water to pass underneath the vessel into the engines. Water enters the pump through this inlet. The pump can be of a centrifugal design for high speeds, or an axial flow pump for low to medium speeds. The water pressure inside the inlet is increased by the pump and forced backwards through a nozzle. With the use of a reversing bucket, reverse thrust can also be achieved for faring backwards, quickly and without the need to change gear or adjust engine thrust. The reversing bucket can also be used to help slow the ship down when braking. This feature is the main reason pump jets are so maneuverable.

The nozzle also provides the steering of the pump-jets. Plates, similar to rudders, can be attached to the nozzle in order to redirect the water flow port and starboard. In a way, this is similar to the principles of air thrust vectoring, a technique which has long been used in launch vehicles (rockets and missiles) then later in military jet-powered aircraft. This provides pumpjet-powered ships with superior agility at sea. Another advantage is that when faring backwards by using the reversing bucket, steering is not inverted, as opposed to propeller-powered ships.

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Waterjet Propulsion
$15.47
 
Royalty Free License 
Waterjet Propulsion
$15.47
 
Royalty Free License 
Response 65% in 15.1h
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3D Model formats

Format limitations
  • KeyShot (.bip, .ksp)16.6 MB
  • Autodesk FBX (.fbx) (2 files)33.3 MB
  • glTF (.gltf, .glb) (2 files)33.3 MB
  • OBJ (.obj, .mtl) (2 files)33.3 MB
  • Stereolithography (.stl) (2 files)33.3 MB
  • USDZ (.usdz) (2 files)33.3 MB
  • 3D Studio (.3ds) (2 files)33.3 MB
  • Collada (.dae) (2 files)33.3 MB
  • 3D Manufacturing File (.3mf) (2 files)33.3 MB
  • Marvelous Designer (.zpac, .avt, .pos, .ZPrj)16.6 MB
  • High-Res Renderings 16.6 MB

3D Model details

  • Publish date2022-04-05
  • Model ID#3682414
  • Animated
  • Rigged
  • VR / AR / Low-poly
  • PBR
  • Geometry -
  • Polygons 0
  • Vertices 0
  • Textures
  • Materials
  • UV Mapping
  • Unwrapped UVs Unknown
  • Plugins used
  • Ready for 3D Printing
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