Features Advanced Emergency Disconnect System

Just as Boeing announcedit was looking at a tanker variant of its 777 to compete for a lucrative USAF tanker contract, Boeing began flight tests on its fifth-generation aerial refueling boom installed on the original KC-767 tanker prototype.

With a control system developed by Smiths Aerospace, the new boom features a fully fly-by-wire control system -- which Smiths says is more responsive, and gives the operator more precise control of the boom.

The flight tests are to demonstrate integration between the new control system and the boom operator. Boeing says the new boom is the same size and shape as the previous systems... but claims the new control system will make it more capable and reliable.

Also on the new boom is a full-time, independent disconnect system -- or IDS. Boom operators onboard the USAF's current KC-135 workhorse rely on a functioning receiver air refueling system to give them the ability to disconnect. Signals from the boom operator through the boom direct the receiver's latching mechanism to release the boom.

However, if the receiver's system malfunctions, the operator -- who is in the best position to see a developing emergency -- might not be able to disconnect immediately using the old system. That problem is addressed with the IDS -- which forces a disconnect independent of the receiver's system.

Boom testing will run for several weeks and is the first in a series of extensive air-refueling tests that will be conducted in upcoming months. As of September 21, the KC-767 Tanker has logged more than 129 flights and about 380 hours.

Both Italy and Japan have purchased the KC-767... both expecting to take delivery in 2007.

FMI: www.boeing.com