main propulsion test article
31MESSENGER — This article is about the NASA space mission. For other uses, see Messenger. MESSENGER Artist s rendering of MESSENGER orbiting Mercury. Operator NASA / APL Major contractors APL …
32V-boat — The V boats were a group of nine United States Navy submarines built between World War I and World War II from 1919 to 1934. These were not a ship class in the usual sense of a series of nearly identical ships built from the same design, but… …
33Landing Ship, Tank — A Canadian LST off loads an M4 Sherman during the Allied invasion of Sicily in 1943. Landing Ship, Tank (LST) was the military designation for naval vessels created during World War II to support amphibious operations by carrying significant… …
34V boat — Seven V boats (from left to right: Cachalot, Dolphin, Barracuda, Bass, Bonita, Nautilus, Narwhal), with submarine tender Holland …
35Mars Express — CG image of Mars Express Operator ESA Mission type Orbiter + Lander Satellite of …
36Viking program — NASA s Viking program consisted of a pair of space probes sent to Mars, Viking 1 and Viking 2. Each vehicle was composed of two main parts, an orbiter designed to photograph the surface of Mars from orbit, and a lander designed to study the… …
37USS Tripoli (LPH-10) — The second USS Tripoli (LPH 10), an Iwo Jima class amphibious assault ship, was laid down on 15 June 1964 at Pascagoula, Mississippi, by the Ingalls Ship building Corporation; launched on 31 July 1965; sponsored by Mrs. Jane Cates, the wife of… …
38B-2 Spirit — Infobox Aircraft name = B 2 Spirit type = Stealth bomber national origin = United States manufacturer = Northrop Corporation Northrop Grumman caption = A USAF B 2 Spirit in flight. first flight = 17 July 1989 introduction = April 1997 primary… …
39Space Shuttle Solid Rocket Booster — The Space Shuttle Solid Rocket Boosters (SRBs) are the pair of large solid rockets used by the Space Shuttle during the first two minutes of powered flight. They are located on either side of the orange external propellant tank. Each SRB produces …
40Naval tactics in the Age of Steam — The development of the steam ironclad firing explosive shells in the mid 19th century rendered sailing tactics obsolete. New tactics were developed for the big gun Dreadnought battleships. The mine, torpedo, submarine and aircraft posed new… …
