Presently, two aerial refueling methods are practiced. One method uses a hose-drogue-probe assembly for the delivery of fuel. Alternatively, probe-drogue refueling (PDR) involves coupling a probe on a ...

Personnel on the refueling vessel were required to manage the lines and hoses during the operation, which introduces certain limitations to the unmanned ships’ design. Safety considerations for ...

During tests, a team of engineers and test pilots focused on how the propeller system and its wake affected the receiver aircraft and refueling hose, military website The Aviationist reported.