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The V2 engine introduced in 1948, colloquially called Panhead, was available as E, EL, F, FL depending on size and compression 2019 Harley Davidson FLHT. Harley-Davidson FL is a model designation used for Harley-Davidson motorcycles since 1941, when F referred to the new large capacity 74 cui (1200cc) variant of the V-2 Overhead valve engine (″Knucklehead″) that was introduced in 1936 as ...
Single-downtube bicycle-like frame, direct leather belt drive, rear coaster brake. Construction began in 1903; sold as production models in 1904–1905. Models 2, 3 (Named retroactively in 1908) 26.8 cu in (439 cc) IOE single. 1906–1907. Dual-spring front-end suspension. Model 4. 26.8 cu in (439 cc) IOE single. 1908.
Sailing hydrofoil. A sailing hydrofoil, hydrofoil sailboat, or hydrosail is a sailboat with wing-like foils mounted under the hull. As the craft increases its speed the hydrofoils lift the hull up and out of the water, greatly reducing wetted area, resulting in decreased drag and increased speed. A sailing hydrofoil can achieve speeds exceeding ...
Underwater glider. An underwater glider is a type of autonomous underwater vehicle (AUV) that employs variable-buoyancy propulsion instead of traditional propellers or thrusters. It employs variable buoyancy in a similar way to a profiling float, but unlike a float, which can move only up and down, an underwater glider is fitted with hydrofoils ...
Hypersonic Technology Vehicle HTV-2 reentry (artist's impression) Hypersonic Technology Vehicle 2 (HTV-2) is an experimental hypersonic glide vehicle developed as part of the DARPA Falcon Project designed to fly in the Mach 20 range.
GM Roto Hydramatic transmission. Roto Hydramatic (sometimes spelled Roto Hydra-Matic or Roto-Hydramatic) was an automatic transmission built by General Motors and used in some Oldsmobile, Pontiac and Holden models between 1961 and 1965. It was based on the earlier, four-speed Hydramatic, but was more compact, providing only three forward speeds ...
Hyper Velocity Gliding Projectile. Hyper Velocity Gliding Projectile (HVGP) (島嶼防衛用高速滑空弾, Tōsyobōeiyō-kōsoku-kakkūdan) is a Japanese hypersonic glide vehicle being intended to be used as a hypersonic weapon in defending of remote islands. [1] [2]
Descent and landing. For helicopter, "autorotation" refers to the descending maneuver in which the engine is disengaged from the main rotor system and the rotor blades are driven solely by the upward flow of air through the rotor. The freewheeling unit is a special clutch mechanism that disengages any time the engine rotational speed is less ...