uncleflo
Registered since September 28th, 2017
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Tag selected: concentration.
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Isotropic Linear Elastic Stress Concentration, Massachusetts Institute of Technology
Saved by uncleflo on September 2nd, 2014.
The primary objectives of this lab are to introduce the concept of stress and strain concentration factors in notched structural configurations. The notion of stress concentration is experimentally explored qualitatively, using photoelasticity, and quantitatively, using experimental, analytical, and numerical methods. 2.002 Mechanics and Materials II, Spring 2004
laboratory isotropic linear elastic stress concentration mit edx MITx 2.01x objective introduce concept strain factor configuration experiment explore photo elasticity method numerical analyse mechanic material demonstration pdf elements of structures element structure
The SR-71 Pratt & Whitney JT11D-20B J58 Engine
Saved by uncleflo on June 20th, 2014.
The SR-71 Blackbird is powered by two Pratt & Whitney J-58 turbo-ramjets, each developing 32,500 pounds of thrust with afterburning. The critical problems concerning supersonic flight with air breathing engines are concentrated in the air inlet area. The circular air intakes of the SR-71 contain a center body tipped with a conical spike. The spike is movable, forward for takeoff and climb to 30,000 feet after which, as speed builds up, it moves rearward, controlling the amount of air entering the engine. As it does so, Air Inlet Bypass Doors in the side of the nacelle close to establish the correct flow of air through the engine, holding the supersonic shock wave in it's critical position within the inlet. The engine itself operates at subsonic speed.
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Where We Fly - UK Animation - YouTube
Saved by uncleflo on May 24th, 2013.
Animation to accompany the Sailplane and Gliding article "Where we Fly" by Paul Jessop. This shows the density of glider flights submitted to the BGA ladder over several years.
fly gliding uk statistics animation 3D article support feature density concentration
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