very small rudder
31PID controller — A block diagram of a PID controller A proportional–integral–derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems – a PID is the most commonly used feedback… …
32Dewoitine D.520 — D.520 of the Dewoitine D.520 preserved at Musée de l Air et de l Espace Role …
33Punt (boat) — This article concentrates on the history and development of punts and punting in England, for other usages see Norfolk punt and the general disambiguation pages at punt and punter. A punt is a flat bottomed boat with a square cut bow, designed… …
34submarine — n. /sub meuh reen , sub meuh reen /; adj., v. /sub meuh reen /, n., adj., v., submarined, submarining. n. 1. a vessel that can be submerged and navigated under water, usually built for warfare and armed with torpedoes or guided missiles. 2.… …
35Galvanic corrosion — This new manifold for water meters has replaced the old one after 4 years of use, having been connected directly to a copper pipe in the building (0.85 V of potential difference, see the point of corrosion in the bottom left). With a PVC battery… …
36Ambrosini SS.4 — infobox Aircraft name = Ambrosini SS.4 type =Fighter manufacturer = SAI Ambrosini caption = Three views of the SS.4 designer = Sergio Stefanutti first flight = 1935 number built = 3(?) status =prototype primary user =Regia Aeronautica The SAI… …
37Course Setting Bomb Sight — The CSBS Mk. IX mounted in a Fairey Battle. The bomb aimer is sighting through the white ring shaped backsights to the pin shaped foresights (just visible against the armoured cable) and holding the bomb release switch in his right hand. The… …
38Virginia pinnace — Pinnace Virginia Earliest Sailing Ship Built in America = https://secure.wikimedia.org/wikipedia/en/wiki/User:Merlynne6The first recorded ship of noteworthy size built in America is the Pinnace Virginia . [… …
39Atomic clock — Nuclear clock redirects here. For the clock as a measure for risk of catastrophic destruction, see Doomsday Clock. For a clock updated by radio signals (commonly but inaccurately called an atomic clock ), see Radio clock. For the album by Zion I …
40Messerschmitt Bf 109 — Bf 109 Restored Messerschmitt Bf 109G 6 Role Fighter Manufacturer …
