exhaust action
71Cox model engine — Cox Model Engines Cox Fokker DVII Ready To Fly Control Line Model Plane …
72Battle of Kursk — Operation Citadel Part of the Eastern Front of World War II …
73Mil Mi-24 — Mi 24 / Mi 25 / Mi 35 Polish Mil Mi 24 Role Attack helicopter with transport capabilities …
74Republic P-47 Thunderbolt — P 47 Thunderbolt In flight view of a prototype of the Republic P 47N Thunderbolt Role Fighter bomber …
75Ocean thermal energy conversion — Temperature differences between the surface and 1000m depth in the oceans Ocean Thermal Energy Conversion (OTEC) uses the difference between cooler deep and warmer shallow or surface ocean waters to run a heat engine and produce useful work,… …
76Cogeneration — For other uses, see CHP (disambiguation). Sustainable energy Renewable energy …
77Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
78Smog — is a kind of air pollution; the word smog is a portmanteau of smoke and fog. Classic smog results from large amounts of coal burning in an area caused by a mixture of smoke and sulfur dioxide. Modern smog does not usually come from coal but from… …
79Space 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 …
80Jet 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… …
