contra-rotating fan

As she worked her spoon into the avocado starter Charlotte watched the translucent blur of the contra-rotating fans at the stern.

Two contra-rotating fans were spinning slowly on the tail, keeping its nose pressed firmly into the refuelling blimp.

Power to the contra-rotating fans was being reduced, relieving as much pressure as possible until the upper fuselage frames could be repaired.

Greg watched the vast bulk of the airship appear on the bulkhead flatscreen, its contra-rotating fans dawdling in a doidrum calm.

The stealthed, disc-shaped aerial combat robots were a metre and a half wide, their central section a curving mesh-grid to protect the wide-cord contra-rotating fans in the middle.

Although the front fan had inlet guide vanes, there were no vanes between the contra-rotating fan rotors or, downstream, any exit guide vanes.

Using a stock F.2/2, MV added a separate module to the rear of the engine (directly behind the HP turbine) which comprised contra-rotating LP turbines attached to two contra-rotating fans.

Contra-rotating fans are fitted to work in line with two actuated butterfly valves, to re-circle the air/gas in each chamber and finally, after trapping the Methyl Bromide on the activated carbon, exhaust the scrubbed air from each chamber.