rate+of+ascent+or+of+descent
81Apollo 15, Lunar surface — Apollo 15 Commander David Scott and Lunar Module Pilot James Irwin spent three days on the Moon and a total of 18½ hours outside the spacecraft on lunar extra vehicular activity. The mission was the first not to land in a lunar mare, instead… …
82space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
83balloon flight — ▪ aviation Introduction passage through the air of a balloon that contains a buoyant gas, such as helium or heated air, for which reason it is also known as lighter than air free flight. Unmanned balloons have been used to carry meteorological… …
84Biblical Geography — Biblical Geography † Catholic Encyclopedia ► Biblical Geography With the exception of the didactic literature, there is no book in the Bible which, to a greater or less extent, does not contain mention of, or allusions to, the… …
85Colombia — Colombian, adj., n. /keuh lum bee euh/; Sp. /kaw lawm byah/, n. a republic in NW South America. 37,418,290; 439,828 sq. mi. (1,139,155 sq. km). Cap.: Bogotá. * * * Colombia Introduction Colombia Background: Colombia was one of the three countries …
86Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
87Annapurna — Infobox Mountain Name = Annapurna Photo = Annapurna from west.jpg Caption =Annapurna I (left) and Fang (right) from the west Elevation = convert|8091|m|ft|0 Ranked 10th Location = Central Nepal Range = Himalaya Prominence =… …
88Least mean squares filter — Least mean squares (LMS) algorithms are a class of adaptive filter used to mimic a desired filter by finding the filter coefficients that relate to producing the least mean squares of the error signal (difference between the desired and the… …
89Alan Rouse — Alan Paul Rouse (December 19, 1951 August 10, 1986) was the first British climber to reach the summit of the second highest mountain in the world, K2, but died on the descent.He was born in Wallasey and began climbing at the age of 15, soon… …
90Orion (Constellation program) — For deep space spacecraft based on the Orion design, see Multi Purpose Crew Vehicle. For initial design of the Orion Crew Exploration Vehicle, see Crew Exploration Vehicle. For the nuclear powered spacecraft designed in the 1950s, see Project… …
