air breathing propulsion system
81Tsiolkovsky rocket equation — Tsiolkovsky s rocket equation, or ideal rocket equation is named after Konstantin Tsiolkovsky, who independently derived it and published in his 1903 work [К. Э. Циолковский, Исследование мировых пространств реактивными приборами, 1903. It is… …
82Rockwell X-30 — X 30 NASP Artist s Concept of the X 30 entering orbit Role SSTO aerospaceplane Manufacturer …
83List of Star Trek races — This is a list of sentient species and races from the fictional universe of the Star Trek media franchise. Contents A B C D E F G H I J K L M N O P Q R S T U V W X Y Z   Notes   …
84Milton Orville Thompson — This article is about the astronaut. For the baseball player, see Milt Thompson (baseball). Milton O. Thompson USAF Astronaut Nationality American …
85Eight Worlds — refers to a series of novels and short stories by John Varley, in which the solar system has been colonized by human refugees fleeing an alien invasion of the earth. Earth and Jupiter are off limits to humanity, but Earth s moon and the other… …
862004 in science — The year 2004 in science and technology involved some significant events.Anthropology*October 27 Remains of a previously unknown species of human is discovered in Indonesia. Named Homo floresiensis , the hominid is a dwarfed version that lived 18 …
87Scuba diving — Not to be confused with Self contained breathing apparatus, which describes breathing sets used out of water. Scuba diver Scuba diving ( SCUBA originally being an acronym for self contained underwater breathing apparatus, now widely considered a… …
88Rowing (sport) — All eight types of racing boats, six of which are part of the Olympic Games Rowing is a sport in which athletes race against each other on rivers, on lakes or on the ocean, depending upon the type of race and the discipline. The boats are… …
89Diving equipment — Surface supplied commercial diving equipment on display at a trade show Diving equipment is equipment used by underwater divers for the purpose of facilitating diving activities. This may be equipment primarily intended for this purpose, or… …
90Oxygen toxicity — Classification and external resources In 1942–43 the UK Government carried out extensive testing for oxygen toxicity in divers. The chamber is pressurised with air to 3.7  …
