Abstract: A novel method of forming low density core metal parts by pressure bonding face sheets to a porous foam metal core and simultaneously densifying the core is disclosed. In particular, low density core aluminum and aluminum alloy parts can be formed according to the method of the invention. The method of forming low density core metal parts generally comprises the steps of providing a porous, foam metal core and simultaneously pressure bonding first and second solid metal face sheets directly to opposite sides of the core and densifying the core by applying heat and uniaxial forge pressure to the first and second face sheets and to the core for a predetermined period of time. The method of the invention can therefore produce LDC parts having a predetermined shape and density. Furthermore, the LDC parts are less subject to interfacial oxidation and delamination than conventional LDC parts made by brazing.

Abstract: An aircraft window escutcheon assembly includes front and back panels having aligned window openings. A dust pane and a window shade are captively retained between the front and back panels. The front and back panels include integral fastening portions which interlock to join the panels, thus securing the entire assembly together. The back panel includes resilient flexible clips which have hooked ends, and the front panel includes rails which have projecting portions that engage the hooked ends of the clips. The assembly also includes C-shaped locating clips which aid in locating the assembly with respect to an aircraft structure to which the assembly is secured in an aircraft. The window shade is self-rolling, and the rolled portion of the shade is retained by contact with the C-shaped locating clips.

Abstract: There is provided a high frequency pulse generator having inlet ports for receiving a fluid mass flow rate and output ports that produce a pulse flow rate therefrom by being opened and closed by a chopper wheel. The duty cycle of the generator is controlled by the ratio of the aperture sections of the chopper wheel to the closure sections of the wheel. The housing of the pulse generator may be divided into separate sealed chambers for receiving independent fluid mass flow rates in each chamber and providing independent variable phased pulsed output flow rates.

Abstract: A mechanical biasing device to drive an aircraft control surface to a predetermined position relative to the main airfoil, either directly or indirectly through a linkage system, while also providing sufficient clamping force at the neutral position so that the airfoil and control surface behave dynamically like a single structure.