Leng
Exploration AUV for long-distance-missions
Contact person:
Technical Details
| Size: | Ø 0.22 m x approx. 3.5 m |
| Weight: | 73 kg |
| Power supply: | Lithium-Polymer-Battery with 1.75 kWh at 48 V (approx. 10 hours endurance) |
| Speed: | Approx. 3 m/s (6 kn) |
| Actuation/ Engine: | 1 Main thruster (pan-tiltable), 2 lateral thrusters, each 600W. 2 buoyancy engines (each 0.7l volume) |
| Sensors: | Evologics S2CR 48/78 USBL, Rowe 1.2MHz dual-head DVL, KVH 1750 3-Achs FOG/IMU, Paroscientific series 6000 pressure sensor, Micron DST obstacle-avoidance sonar, 2x Reson TC4013 hydrophone, ground-stereo camera system, ground camera, docking-camera (all cameras HD, uncompressed full-frame recording), 9x 3500 lm LED-flasher |
| Communication: | USBL (modem function), Ethernet (when tethered with either copper or fiber cable, WiFi at the surface) |
| Datenverarbeitung: | 3-Schichtiges Datenverarbeitungskonzept: ARM-Basiertes System-Managementmodul, Intel-Atom-Rechner für Navigation und Intel i7-Rechner für Bildverarbeitung |
Organisational Details | |
| Sponsor: |
Federal Ministry of Economics and Technology
German Aerospace Center e.V. |
| Grant number: | The EurEx project is funded by the German Ministry of Economics (BMWI), Grant No. 50 NA 1217). |
| Application Field: |
Underwater Robotics
Space Robotics |
| Related Projects: |
EurEx-LUNa
EurEx - Persistent under-ice navigation
(03.2020- 09.2023)
EurEx-SiLaNa
EurEx-Safe Long-Term Navigation
(09.2017- 10.2019)
FlatFish
Autonomous underwater vehicle
(11.2013- 06.2017)
EurEx
Europa-Explorer
(12.2012- 04.2016)
CUSLAM
Localization and mapping in confined underwater environments
(09.2009- 07.2012)
|
| Related Robots: |
Teredo IceShuttle
Through-Ice-Cap Transfer-Vehicle & Base Station
DAGON
|
| This system is not actively used anymore. | |
System description
The autonomous underwater vehicle (AUV) Leng was designed as long-distance exploration vehicle. Its shape was specifically designed to meet the requirements of the Europa-Explorer-Project: very small diameter (in order to fit into the ice drill) as well as a hydrodynamically optimized outer hull (in order to reduce energy consumption and enable long-range missions). The vehicle is equipped with a large number of different navigation sensors since localization quality and availability are of key importance – in the Europa-Explorer-scenario the vehicle has to return to its starting position (ice drill) even after having conducted long-distance missions.
Besides operating fully-autonomously, the AUV can be operated in hybrid-ROV-mode by connecting either a fiber or copper data cable.
Besides operating fully-autonomously, the AUV can be operated in hybrid-ROV-mode by connecting either a fiber or copper data cable.
