According to the China National Defense Science and Technology Information Network, the US Naval Research Laboratory (NRL) Spacecraft Engineering Department (SED) has successfully successfully moved from a fixed platform to the US Navy under sea conditions with a wave height of more than 3 feet (about 0.91 meters). The sea fox "unmanned surface boat" carried out a robot refueling test. The Rapid Automated Fuel Transfer (RAFT) project safely placed the magnetic refueling device at the fueling interface on the unmanned surface boat by tracking the sea trajectory of the “Sea Fox†unmanned surface boat and successfully completed the fuel transmission.
From the current situation, the unmanned surface boat needs to establish a hook-and-loop connection between the unmanned surface boat and the fuel supply ship when refueling. The process of connecting the two is often achieved manually.
Dr. Glenn Hanshaw from the Control Systems Division of NRL Spacecraft Engineering said: “It is often difficult and dangerous to refuel unmanned surface crafts at sea, especially in harsh weather or high sea conditions. Applying the successful experience of robotic spacecraft to the ocean can achieve the same success in reducing risk."
By robotic autonomous refueling, the unmanned surface boat no longer needs to return to the fuel supply vessel for fuel replenishment, which not only enhances the mission efficiency, but also reduces the risk of exposure to the fuel supply vessel. At the same time, this practice also improves the efficiency of the Navy's unmanned surface craftsmanship, reduces the risk to personnel, and reduces the potential damage to the ship itself and equipment.
NRL engineers completed approximately 60 fully autonomous and manned refueling tests at the US Army's Aberdeen Experimental Center Wave Simulation Department. The simulated sea conditions ranged from 0 to 3.25, and the maximum height of the waves exceeded 3 feet (approximately 0.91). M), achieved a very high demonstration success rate.
The RAFT project is funded by DARPA, which provides technical support to NRL, Clemson University, International Scientific Applications Corporation (SAIC) and the US Naval Space and Naval Warfare Systems Command (SPAWAR), which is the robotic system in the RAFT project. The main designer.
Future robotic fuel transmission tests will be conducted onshore and in the air, with onshore testing for autonomous high-mobility multi-purpose wheeled vehicles (HMMV) fueled without stopping, while aerial tests are fueling unmanned aerial vehicles. filling.
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