Abstract: A duct cover for use with a duct within a vehicle, the duct cover operative for directing a fluid flow. The duct cover being further operative for minimizing the entrance of foreign object debris into the duct. The duct cover has a flow directing honeycomb portion for conducting the passing fluid flow in a preferred direction. The flow directing honeycomb comprises an array of continuous, polygon shaped open cells which are biased with respect to the initial fluid flow direction. The periphery of the flow directing honeycomb is rigidized to stiffen the same for minimizing the displacements thereof. The rigidity is provided by a framing member comprising upper and lower skin structures affixed to a core material. The framing member is preferably adhesively bonded to the flow directing honeycomb by means of a foaming adhesive and a barrier member. The barrier member is operative for minimizing the expansion of the foaming adhesive into the open cells of the honeycomb.

Abstract: A coupling device for transmitting torque between two rotating drive shaft segments. The coupling device includes a locking mechanism for preventing axial excursions of the drive shaft segments relative to one another when the drive shaft segments are coupled and transmitting torque. The coupling device, furthermore, provides a means for quick disconnect of the drive shaft segments when the transmission of torque is no longer desired and decoupling is preferred. The coupling device, additionally, includes a guide pin and sleeve arrangement for piloting the drive shaft segments during coupling. A drive system is also provided which includes a flexible coupling for accommodating axial and angular misalignment of the drive shaft segments relative to one another.