uncleflo
Registered since September 28th, 2017
Has a total of 4281 bookmarks.
Showing top Tags within 3 bookmarks
howto information development guide reference administration design website software solution online service product business uk tool company linux code server system application web list video marine create data experience tutorial description explanation learn technology build article blog world project boat download windows lookup security free performance javascript technical london beautiful control network tools support course file research purchase image library programming youtube example php install construction opensource community html quality computer feature profile power browser music platform process mobile work user share manage professional database hardware buy industry advice internet dance developer installation 3d camera search access customer material travel standard money test develop review documentation css photography engineering webdesign engine device digital speed event api source question program management client phone discussion water simple content story marketing yacht app setup account interface package idea fast communication compare cheap script market study easy live google resource operation contact demonstration startup
Tag selected: shockwave.
Looking up shockwave tag. Showing 3 results. Clear
On the Comparison of the Long Penetration Mode (LPM) Supersonic Counterflowing Jet
Saved by uncleflo on December 7th, 2016.
Classic tonal screech noise created by under-expanded supersonic jets; Long Penetration Mode (LPM) supersonic phenomenon -Under-expanded counter-flowing jet in supersonic free stream -Demonstrated in several wind tunnel tests -Modeled in several computational fluid dynamics (CFD) simulations; Discussion of LPM acoustics feedback and fluid interactions -Analogous to the aero-acoustics interactions seen in screech jets; Lessons Learned: Applying certain methodologies to LPM -Developed and successfully demonstrated in the study of screech jets -Discussion of mechanically induced excitation in fluid oscillators in general; Conclusions -Large body of work done on jet screech, other aero-acoustic phenomenacan have direct application to the study and applications of LPM cold flow jets. For the Oral/Visual Presentation in which this video was presented, please see the following link in the NASA Technical Reports Server (NTRS, http://ntrs.nasa.gov): http://hdl.handle.net/2060/20150016244
shockwave shock jet test tunnel supersonic wind sonic aerodynamics mach sound speed fast study research simulation real discussion acoustic feedback fluid interaction nasa
The heart of the SR-71 : the J-58 engine. Development
Saved by uncleflo on June 20th, 2014.
The Blackbird was the only aircraft ever to be designed around the J-58 (JT-11). This turbojet engine had been developed for a USN project, by Pratt & Whitney, at their West Palm Beach R & D center in Florida. Eventhough its existence remained a secret until revealed on 28th February 1964 by US President Lyndon B. Johnson, that of the JT-11 engine was already known to specialists.
blackbird usa defence description information engine howto guide engineering challenge development sr-71 specialist speed shockwave fast design turboaircraft plane
SR-71 J-58 Powerplant
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.
aviation powerplant sr-71 engine plane speed supersonic shockwave technology explanation air usa defence military thrust pratt whitney turbine ramjet afterburner inlet spike
No further bookmarks found.