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A keystone module is a standardized snap-in package for mounting a variety of low-voltage electrical jacks or optical connectors into a keystone wall plate, face plate, surface-mount box, or a patch panel. Keystone modules have a rectangular face of 14.5 mm wide by 16.0 mm high and are held in place with flexible tabs.
Experimental jet research aircraft capable of 1,000 mph and able to reach 36,000 ft in 1 and 1/2 minutes Miles M.52; cancelled 1946 25/43 Brabazon IIA – Civil Transport for European service Airspeed Ambassador: C.26/43 (26/43) Brabazon VB – Light Civil Air Transport De Havilland Dove: B.27/43 OR.149 Heavy bomber – developed Halifax
Two aircraft were fitted with Wright R-1820 radial engines and while ordered as an XP4N-1 were designated as the XP4N-2 when they entered service. The two metal wing radial-engine powered PN-10s were redesignated as PN-12 s, which combined the revised wings of the PN-7 but reverted to the metal hull of the PN-8 with the enlarged chines and was ...
The Keystone entry was for an all metal low winged monoplane bomber with retractable landing gear. The bomber would be powered by two Curtiss V-1570 geared Conqueror engines. With a crew of 5 it was armed with up to 3 x .30 caliber machine guns and could carry 2,000 lbs (907 kg) of bombs on external racks.
The NK was an open-cockpit two-seat biplane with a convertible wheel or float landing gear. It was powered by a 220 hp (164 kW) Wright R-790 Whirlwind.The company prototype designated the Pup was entered into a United States Navy design competition for a trainer and was awarded a contract for three prototypes designated XNK-1.
A MIL-DTL-38999 circular connector plated with a nickel–teflon composite. Left: plug (male) type connector; Right: receptacle (female) type connector) Electrical or fiber-optic connectors used by U.S. Department of Defense were originally developed in the 1930s for severe aeronautical and tactical service applications, and the Type "AN" series set the standard for modern military circular ...
A functional specification (also, functional spec, specs, functional specifications document (FSD), functional requirements specification) in systems engineering and software development is a document that specifies the functions that a system or component must perform (often part of a requirements specification) (ISO/IEC/IEEE 24765-2010).
Because of more powerful engines, the performance of the Y1B-4 was a slight improvement on the B-3, but the only difference between the two planes was their engines. On April 28, 1931, the army ordered 25 improved Y1B-4s as the Keystone B-4A. This production version was part of the last biplane bomber order made by the Army Air Corps (along ...