- Richard T. Whitcomb
Richard T. Whitcomb (1921,
Evanston, Illinois) is an aeronautical engineer who spent most of his career at the Langley Laboratory of the NACA and its successor organization, NASA.
In the 1950s, Whitcomb proposed the 'Area Rule'. The Area Rule states that two bodies having the same cross-sectional area distribution will have the same wave drag, as measured in the far field. As the axi-symmetric body with the minimum wave drag in transonic flow was shown to be the
Sears-Haack body, this provided an optimal distribution to compare designs with. The impact of this concept on aircraft design was immediate. The prototype Convair YF-102 was found to not be capable of exceeding the speed of sound in level flight. By sculpting the fuselage, to reduce the fuselage cross-sectional area in the region of the wing, the aircraft's area distribution was made closer to optimum. The resulting aircraft was found to be capable of exceeding the speed of soundin level flight.
In the 1960s, Whitcomb developed the
supercritical airfoil, and in the 1970s, Whitcomb developed winglets, devices used at the wingtips, normal to the wingspar, extending both upward and downward, which reduce wingtip vortices and the induced drag such vortices create, improving the aerodynamic efficiency of the wing and seen frequently in modern airliners, in which they reduce fuel consumption, and in sailplanesin which they improve glide ratio.
* [http://history.nasa.gov/SP-4305/ch11.htm The Slotted Tunnel and the Area Rule]
Wikimedia Foundation. 2010.
Look at other dictionaries:
Richard Whitcomb — Richard T. Whitcomb, né en 1921 à Evanston (Illinois) décédé le 13 octobre 2009 à Newport News (Virginie), est un ingénieur aéronautique américain qui a travaillé au sein du Langley Laboratory de la NACA (devenu la NASA). Il est connu en… … Wikipédia en Français
Richard Lugar — United States Senator from Indiana Incumbent Assumed office January 3, 1977 … Wikipedia
Richard Lugar — (2010) Richard Green „Dick“ Lugar (* 4. April 1932 in Indianapolis, Indiana) ist ein US amerikanischer Politiker und der dienstältere der beiden US Senatoren aus dem Bundesstaat Indiana. Er gehört der Republikanischen … Deutsch Wikipedia
Whitcomb — This surname is of Anglo Saxon origin, and is a locational name deriving from one of the places called Whitcombe in Dorset, Wiltshire, and the Isle of Wight. The first two of these places are recorded as Widecome in the Domesday Book of 1086, and … Surnames reference
R. Steven Whitcomb — Infobox Military Person name=R. Steven Whitcomb born= died= placeofbirth= placeofdeath= placeofburial= caption=LTG R. Steven Whitcomb nickname= allegiance= United States of America branch= United States Army serviceyears=1970 present rank=… … Wikipedia
Edgar Whitcomb — Edgar Doud Whitcomb (born November 6 1917, Hayden, Indiana), was an attorney and the 43rd Governor of Indiana.Early lifeHe was the second child and first son of John Whitcomb and Louise Doud Whitcomb. An outgoing and athletic youth, he lettered… … Wikipedia
Edgar Whitcomb — Edgar Doud Whitcomb (* 6. November 1917 in Hayden, Jennings County, Indiana) ist ein ehemaliger US amerikanischer Politiker. Er war zwischen 1969 und 1973 der 43. Gouverneur des Bundesstaates Indiana. Frühe Jahre und politischer Aufstieg… … Deutsch Wikipedia
Area rule — The Whitcomb area rule, also called the transonic area rule, is a design technique used to reduce an aircraft s drag at transonic and supersonic speeds, particularly between Mach 0.75 and 1.2. This is one of the most important operating speed… … Wikipedia
Whitcombe — may refer to:People*Thomas Whitcombe (c.1763–c.1824), an English martime artist. *Dave Whitcombe, an English professional darts player *Frederic Whitcombe, a member of the Western Australian Legislative Council (1898 1900) *Jonathan Whitcombe, an … Wikipedia
List of Fairfield University people — Notable AlumniAcademia*Ronald A. Bosco 67 mdash; Distinguished Professor of English and American Literature, University at Albany*Gary C. Brannigan 69 mdash; Professor of Psychology, State University of New York at Plattsburgh; co developed the… … Wikipedia