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SilentHawk is an all-wheel drive, hybrid-electric military bike designed for the United States Armed Forces.The bike, currently in its prototype stage, is being developed by Fairfax, Virginia-based contractor Logos Technologies with the aid of a Small Business Innovation Research (SBIR) award from the Defense Advanced Research Projects Agency (DARPA). [1]
The bicycle wheel hub is the motor. The power levels of motors used are influenced by available legal categories and are often, but not always limited to under 750 watts. With a front-drive the motor sits in the front hub, and with a rear-drive the motor sits in the rear hub.
A wheel hub motor, hub motor, or in-wheel motor is a motor that is incorporated into the hub of the wheel. Wheel-hub motors are commonly found on electric bicycles. Electric hub motors were well received in early electric cars, but have not been commercially successful in modern production cars [1] [2] because they negatively affect vehicle ...
BionX motors were typically mounted into an oversized rear wheel hub and were noted for their low noise; regenerative braking capability and hub-embedded motor controller. The D series of motors was the most recent and strongest BionX technology with a torque of 25/50 Nm. The motor cylinder was larger but thinner than previous versions and ...
The Northrop B-2 Spirit, also known as the Stealth Bomber, [3] is an American heavy strategic bomber, featuring low-observable stealth technology designed to penetrate dense anti-aircraft defenses. A subsonic flying wing with a crew of two, the plane was designed by Northrop (later Northrop Grumman ) as the prime contractor, with Boeing ...
Hub-center steering is characterized by the steering pivot points being inside the hub of the wheel, rather than above the wheel in the headstock as in the traditional layout. Most hub-center arrangements employ a swingarm that extends from the bottom of the engine/frame to the center of the front wheel.
In the 1999 NATO bombing of Yugoslavia two stealth aircraft were used by the United States, the veteran F-117 Nighthawk, and the newly introduced B-2 Spirit strategic stealth bomber. The F-117 performed its usual role of striking precision high-value targets and performed well, although one F-117 was shot down by a Serbian Isayev S-125 'Neva-M ...
The Speedhub is more expensive than competing bicycle gear systems (both hub gears and derailleur gears), and it is some 100 grams heavier than a comparable set of derailleur gears, [2] but offers about the same gear range (and at its ratio of 5.26:1 more range than a typical road bike ratio of 4.28:1 with 50/34 chainrings and 11 to 32 tooth ...
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