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Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.
By October 1966, he had founded Positronic Industries in Springfield, Missouri and initially, the company manufactured electronic components and connectors for the aerospace industry. [ 6 ] [ 7 ] Eight years later, Positronic moved to Rogersville, Missouri , and in the following years, it progressed and managed three expansions.
Positronic is a manufacturing company based in Springfield, Missouri. The company manufactures and supplies electronic connectors that are utilized in a variety of industries worldwide including military , aerospace , telecommunications , medical , industrial and test equipment among others.
The drag-divergence Mach number (not to be confused with critical Mach number) is the Mach number at which the aerodynamic drag on an airfoil or airframe begins to increase rapidly as the Mach number continues to increase. [1] This increase can cause the drag coefficient to rise to more than ten times its low-speed value.
The Positronic Man is a 1992 novel by American writers Isaac Asimov and Robert Silverberg, based on Asimov's 1976 novelette "The Bicentennial Man".. It is about a robot that begins to display characteristics, such as creativity, traditionally the province of humans; the robot is ultimately declared an official human being.
A positronic brain is a fictional technological device, originally conceived by science fiction writer Isaac Asimov. [ 1 ] [ 2 ] It functions as a central processing unit (CPU) for robots , and, in some unspecified way, provides them with a form of consciousness recognizable to humans .
In gas dynamics, the Kantrowitz limit refers to a theoretical concept describing choked flow at supersonic or near-supersonic velocities. [1] When an initially subsonic fluid flow experiences a reduction in cross-section area, the flow speeds up in order to maintain the same mass-flow rate, per the continuity equation.
A Progress D-436 installed on an Antonov An-158 D-436K The "K" variant was the initial model of the engine. It had a bypass ratio of 6.2 and a pressure ratio of 21.0. Proposed for use in the defunct Antonov An-71. [5] D-436M The "M" variant was proposed for use on the Yak-42M. [6] D-436T1