Abstract: A radio frequency switch assembly (120) is mountable between an antenna port (110) and a detachable antenna (130) of a radio communication device assembly (100) to provide an interface for a radio frequency accessory. The switch assembly (120) has a radio interface port (123), a radio frequency accessory port (125), and an antenna interface port (127), and associated contacts (207, 216, 223). A mechanical switch alternatively interconnects the radio interface port (123) with the radio frequency accessory port (125) or with the antenna interface port (127). Preferably, the switch includes a conductive probe (213) that continuously engages the radio interface port contact (207) while being slidable to electrically interconnect with the antenna interface port contact (223) or with the radio frequency accessory port contact (216).

Abstract: A simulator handgrip is connected to the shaft of a slip clutch which offers resistance to handgrip displacement, thereby simulating the "feel" of an actual thrust control for aircraft. Linkages are provided for measuring the amount of handgrip displacement as an electrical signal that may be utilized by a simulator computer. Adjustment devices are provided for moving the handgrip and clutch devices along a diagonal direction to accommodate pilots of different height.

Abstract: A sidestick grip is slidably mounted to achieve adjustable fore-aft displacement. Separate spring devices are linked to the grip for simulating break-out force and force-deflection characteristics. Each spring device is linked to a damper for damping grip movement in the pitch and roll directions. The spring devices have (1) variable spring pre-load bias thereby enabling adjustments of the breakout forces; and (2) adjustable stick neutral position. Transducers measure grip deflection in roll and pitch for utilization by a computer.