boundary-layer transition
61Permian — For the language family, see Permic languages. For the high school, see Permian High School. For the geological basins, see Permian Basin. Permian Period 299–251 million years ago …
62Parasitic drag — (also called parasite drag) is drag caused by moving a solid object through a fluid. Parasitic drag is made up of many components, the most prominent being form drag. Skin friction and interference drag are also major components of parasitic drag …
63Hugh Latimer Dryden — Hugh Dryden Hugh Dryden Born July 2, 1898 Pocomoke City, Maryland …
64Balanced flow — In atmospheric science, balanced flow is an idealisation of atmospheric motion. The idealisation consists in considering the behaviour of one isolated parcel of air having constant density, its motion on a horizontal plane subject to selected… …
65CENBOL — or CENtrifugal pressure supported BOundary Layer refers to the region of an accretion flow around a black hole. The basic idea is that since the centrifugal force l2/r3 increases very rapidly compared to the gravitational force (which goes as… …
66Drag coefficient — In fluid dynamics, the drag coefficient (commonly denoted as: cd, cx or cw) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment such as air or water. It is used in the drag equation,… …
67Gradient copolymers — Copolymers are polymers that are synthesized with more than one kind of repeat unit (or monomer). A gradient copolymer has gradient in repeat units arranged from mostly monomer A to mostly monomer B along much or all of the copolymer… …
68Abkürzungen/Luftfahrt/B–D — Dies ist der zweite Teil der Liste Abkürzungen/Luftfahrt. Liste der Abkürzungen Teil 1 A A Teil 2 B–D B (BA, BB, BC, BD, BE, BF, BG, BH, BI, BJ, BK, BL …
69Troposphere — The troposphere is the lowest portion of Earth s atmosphere. It contains approximately 75% of the atmosphere s mass and almost all of its water vapor and aerosols. The average depth of the troposphere is about 11 km (7 miles) in the middle… …
70PETROV G I — RUSSIA (see also List of Individuals) 31.5.1912 Pinega/RU 13.5.1987 Moscow/RU Georgy Ivanovich Petrov was born in the Archangel region. He graduated in 1935 from the Department of Aeromechanics at the Moscow State University and then joined as a… …
