propulsion duct
41Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
42Spud gun — For the child s toy which fires small pieces of potato, see spud gun (toy). A pneumatic potato cannon A potato cannon (also known as a spud gun or spudzooka ) is a pipe based cannon which uses air pressure (pneumatic), Propellant, or… …
43Space 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 …
44Space Shuttle main engine — SSME redirect here. For the services field, see Service Science, Management and Engineering infobox rocket engine imsize=250 caption=Space Shuttle Main Engine test firing name=Space Shuttle Main Engine country of origin=United States manufacturer …
45Saturn V Instrument Unit — The Saturn V Instrument Unit is a ring shaped structure fitted to the top of the Saturn V rocket s third stage (S IVB) and the Saturn IB s second stage (S IVB). It was immediately below the SLA (Spacecraft/Lunar Module Adapter) panels that… …
46helicopter — /hel i kop teuhr, hee li /, n. 1. any of a class of heavier than air craft that are lifted and sustained in the air horizontally by rotating wings or blades turning on vertical axes through power supplied by an engine. v.i. 2. to fly in a… …
47CCD — can stand for:Science *Carbonate Compensation Depth, a property of oceans *Colony Collapse Disorder, a phenomenon involving the abrupt disappearance of the worker bees in a beehive or Western honey bee colony *Conceptual Common Denominator, the… …
48Gaseous fission reactor — A gas nuclear reactor (or gas fueled reactor ) limits the only temperature limiting materials in a reactor to the reactor walls. A limitation for conventional nuclear fission reactors is that if the nuclear fuel temperature were to rise too high… …
49NASA Ames Research Center — (ARC) is a NASA facility located at Moffett Federal Airfield, which covers 43 acres at the borders of the cities of Mountain View and Sunnyvale in California. This research center is most commonly called NASA Ames. The current NASA Ames Center… …
50XB-70 Valkyrie — Infobox Aircraft name=XB 70 Valkyrie type=Strategic bomber Supersonic research aircraft manufacturer=North American Aviation caption= designer= first flight=21 September 1964 introduced= retired= number built=2 XB 70s status=Retired from testing… …
