PYBBNPitch Yaw Balance Beam Nozzle (aviation; Pratt & Whitney)
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The program has four goals: first, to demonstrate the PYBBN system.
The PYBBN project was aimed at keeping production costs low and keeping it easy to retrofit, according to Roger Bursey, program manager of the Pitch Yaw Balanced Beam Nozzle program.
The PYBBN is referred to as a balanced-beam unit because it uses air available in the nozzle region to balance the forces on the front and rear side of the unit's flap assembly, he continued.