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Jason is a remotely operated vehicle (ROV) system designed for scientific investigation of the deep ocean and seafloor. ROVs are unoccupied, highly maneuverable and operated by a person aboard a surface vessel. They are linked to the ship by a tether, a group of cables that carry electrical signals back and forth between the operator and the vehicle.
Built and operated by the Woods Hole Oceanographic Institution, Jason is equipped with sonar imaging as well as video, still, and electronic cameras and appropriate lighting gear. It carries precision navigation equipment and sensors for depth, vehicle attitude (tilt), and altitude from the seafloor. Jason's manipulator arms can collect samples that may be put in a small basket attached to the vehicle or, for heavier items, on an attached "elevator" platform that carries them to the surface.
A prototype of Jason called Jason Jr. was used with Alvin to explore the Titanic in 1986.citation needed
Jason Specifications
| GENERAL | |
| Depth Capability | 6,000 meters |
| Umbilical | 35 meters, 18 mm diameter, neutrally buoyant |
| Size | 2.2m (L), 1.2m (H), 1.1m (W) |
| Weight | 2,000 kg in air (approx.) |
| Maximum Speed | 1.0 knot forward, 0.5 knot lateral, 1.0 knot vertical |
| IMAGING | |
| Video | Two surface-selectable channels from the following:
- One single-CCD-chip color
- One three-CCD-chip color
- One single-CCD-chip black and white, aft looking |
| Still Camera | 35mm, 400 frames with either 16mm or 28mm lens |
| Electronic Camera | Marquest Model 9100 camera |
| Lighting | One 200 watt-second strobe One 300 or 600 watt-second strobe Three 250 watt incandescent lamps Two 400 watt HMI lights |
| *Other cameras available upon request -- contact DSG* | |
| STANDARD SENSORS AND EQUIPMENT | |
| Attitude | Two-axis clinometer, 0.1 degree resolution |
| Heading | Flux-gate compass, 0.1 degree resolution Gimballed gyro, 0.1 degree resolution |
| Pressure Depth | Bulk semiconductor strain gauge, <1 m resolution |
| Altitude | 120 kHz updating at 2 Hz, 33 meters range, 0.1 m resolution |
| Navigation | Long base line responder or relay transmitter/receiver
7-12 kHz vehicle powered or battery operated for emergency
location |
| Manipulator | One 6 degree of freedom electric powered, maximum lift of 15 kg at .5 meters |
| Propulsion | Seven brushless DC thrusters providing the following thrust:
- fore 260N (120 lbf)
- vertical 300N (135 lbf) |
| Sonar | SImagenex 855 scanning sonar with forward imaging or profiling head available |
| SCIENTIFIC INSTRUMENT SUPPORT | |
| Analog | A/D capability available |
| Digital | Six RS-232 (422 available) 9.6 kbaud bidirectional data channels Higher speed links available |
| Power | Five 500 watt 120 vdc fused outputs |
| Video | One additional input One 6 MHz with 0-20,000 kHz audio, one 8 MHz no audio |
| Payload | 50 kg |
Photo Gallery
See also
External links
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Wikipedia content modification information:
- This page was last modified on 25 September 2008, at 00:40.
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