gravity-operated
81telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …
82Bell P-39 Airacobra — P 39 Airacobra P 39Q 1BE 42 19447, Saga Boy II of Lt. Col. Edwin S. Chickering, CO 357th Fighter Group, July 1943 Role Fighter …
83Dun Mountain Railway — Overview Type Tramway Status Closed Locale Nelson, New Zealand Termini Hardy Street, Nelson (passenger), Wooded Peak (freight) Nelson Por …
84Cable railway — A cable railway (also known as an incline or inclined plane) is a steeply graded railway that uses a cable or rope to haul trains. IntroductionCable railways are typically built where the gradient of the route is so steep that a conventional rail …
85Northrop P-61 Black Widow — P 61 Black Widow A P 61A 1NO of 419th Night Fighter Squadron Role Night fighter …
86Classification yard — North Yard in Denver, Colorado, a typical U.S. classification yard in 2009 …
87Short Sunderland — infobox Aircraft name = Sunderland type = Military flying boat manufacturer = Short Brothers caption = designer = first flight = 16 October 1937 introduced = 1938 retired = 1967 status = primary user = Royal Air Force more users = French Navy… …
88Jet pack — For other meanings see Jetpack (disambiguation). : The Martin Jetpack, despite its name, has no jets or rockets, but is a small helicopter, and is discussed as such. Jet pack, rocket belt, rocket pack, and similar names, are various types of… …
89Offshore concrete structure — Offshore concrete structures have been in use successfully for about 30 years. They serve the same purpose as their steel counterparts in the oil and gas production and storage. The first concrete oil platform has been installed in the North Sea… …
90ship — shipless, adj. shiplessly, adv. /ship/, n., v., shipped, shipping. n. 1. a vessel, esp. a large oceangoing one propelled by sails or engines. 2. Naut. a. a sailing vessel square rigged on all of three or more masts, having jibs, staysails, and a… …
