1. 2013 GFM, Video 002: Supersonic Jet Excitation using Flapping Injection


    from Gallery of Fluid Motion / Added

    49 Plays / / 0 Comments

    Authors: Haukur Hafsteinsson, Lars-Erik Eriksson, Niklas Andersson, Daniel Cuppoletti, Ephraim Gutmark, Erik Prisell Chalmers University of Technology, Gothenburg, Sweden University of Cincinnati, Cincinnati, Ohio Swedish Defence Material Administration, Stockholm, Sweden Supersonic jet noise reduction is important for high speed military aircraft. Lower acoustic levels would reduce structural fatigue leading to longer lifetime of the jet aircraft. It is not solely structural aspects which are of importance, health issues of the pilot and the airfield personnel are also very important, as high acoustic levels may result in severe hearing damage. It remains a major challenge to reduce the overall noise levels of the aircraft, where the supersonic exhaust is the main noise source for near ground operation. Fluidic injection into the supersonic jet at the nozzle exhaust has been shown as a promising method for noise reduction. It has been shown to speed up the mixing process of the main jet, hence reducing the kinetic energy level of the jet and the power of the total acoustic radiation. Furthermore, the interaction mechanism between the fluidic injection and the shock structure in the jet exhaust plays a crucial role in the total noise radiation. In this study, LES is used to investigate the change in flow structures of a supersonic (M=1.56) jet from a converging-diverging nozzle. Six fluidic actuators, evenly distributed around the nozzle exit, inject air in a radial direction towards the main flow axis with a total mass flow ratio of 3%. Steady injection is compared with flapping injection. With flapping injection turned on, the injection angle of each injector is varied sinusoidally in the nozzle exit plane and the variation is the same for all injectors. This fluid dynamics video is submitted to the APS DFD Gallery of Fluid Motion 2013 at the 66 the Annual Meeting of the American Physical Society, Division of Fluid Dynamics (24-26 November, Pittsburgh, PA, USA).

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    • Super Sonic Tube by HO Sports


      from HO Skis / Added

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      Angled Wings for stability in the turns Room for 2 adults - 340 lbs. recommended capacity HO Quick Connect Tow Hook for easy rope hook-up 2 Way Boston Valve for quick and easy inflation and deflation 2K Tube Rope required for the ultimate pull

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      • Mamacita Supersonic Music Arena HighLight


        from Rika NeT / Added

        42 Plays / / 0 Comments

        Club Promo Service

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        • Supersonic (Rap God)


          from Slasha Slim / Added

          56 Plays / / 0 Comments

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          • 808 Festival 2013 Teaser


            from SWERB / Added

            2,328 Plays / / 0 Comments

            AG Productions and Retox Sessions in association with Contango proudly present 808 Festival December 9th (Tuesday Is A National Holiday) at Bitec Bangna. Tickets Are Available Now at www.amiando.com/808festival and at thai ticket major by calling 022623456 or visiting thaiticketmajor.com

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            • Clockwork Oasis - Supersonic (Oasis Day 2013 - Circus Rock Bar)


              from Clockwork Oasis / Added

              21 Plays / / 0 Comments

              www.facebook.com/clockworkoasis Um Oasis Day que prometia liquidar qualquer outro show já realizado pela Clockwork Oasis cover. Quando chegamos na porta, a fila virava quase duas esquinas. Em coro, a galera gritava "Oasis! Oasis! Oasis!". Pareceu-nos que o público estava vindo direto de terras britânicas. Uma noite com tudo o que um grande show tem direito: casa lotada de fãs, todo o time Clockwork a caráter, participação de quarteto de cordas, espírito dos irmãos Gallagher por todo o Circus Rock Bar, acompanhamento em coro de TODAS as músicas do repertório... E, para não faltar absolutamente nada, noite especial de Jack Daniel's na casa. Não há como um fã de Oasis colocar defeito em uma noite assim. Registramos aqui nosso agradecimento aos responsáveis por toda esta loucura, que nos lembrou um pouco do que é o rock n' roll eufórico e indisciplinado desses britânicos. Obrigado ao Alisson e Oasis News pela idealização e apoio em todos os momentos. Ao Circuito Do Rock e Circus Rock Bar pela realização e suporte inigualáveis. Obrigado à equipe do Circus, Bruno Vilaça e Jacob! Obrigado aos parceiros da Otherside RHCP Cover por mais uma noite de sucesso absoluto. Por último, mas indubitavelmente o mais importante: obrigado a essa galera que nos acompanha já há muitos anos, e compartilha desta insanidade - seguir o caminho dos irmãos Gallagher. Seja Clockwork. Ou então vá tomar leite e dormir cedo. Preparem-se para os próximos... Clockwork Oasis.

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              • Supersonic Heroes (COMING SOON)


                from Adriano Di Mauro / Added

                16 Plays / / 0 Comments

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                • Robin Thicke Blurred Lines ft TI,Pharrell (SUPERSONIC live cover)


                  from videos-solution / Added

                  Concert Live réalisé par Axel Chalet © Videos-Solution www.videos-solution.fr Tournage ville de Vanves - (92170) Matériel : - Sony PMW 150 & Sony Nex VG 20 - GRUE EZ FX - Music : Robin Thicke Blurred Lines ft TI,Pharrell LIVE * (CC) Vous n'avez pas le droit d'utiliser cette oeuvre à des fins commerciales. * (CC) Vous n’avez pas le droit de modifier, de transformer ou d’adapter cette œuvre. " N'importe laquelle des conditions ci-dessus peut être levée si vous avez l'autorisation du titulaire de droits. "

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                  • Soviet TU-144 Supersonic Plane


                    from Brar Films / Added

                    367 Plays / / 0 Comments

                    The Tupolev Tu-144 was the first commercial supersonic transport aircraft (SST). It was one of only two SSTs to enter commercial service, the other being Anglo-French Concorde. The design, publicly unveiled in January 1962, was constructed in the Soviet Union under the direction of the Tupolev design bureau, headed by Alexei Tupolev. The prototype first flew on 31 December 1968 near Moscow, two months before the first flight of Concorde. The Tu-144 first went supersonic on 5 June 1969, and on 26 May 1970 became the first commercial transport to exceed Mach 2. The frequent comparisons to Concorde led to the Tu-144 being known as "Concordski" in the West. A Tu-144 crashed in 1973 at the Paris Air Show, delaying its further development. The aircraft was introduced into passenger service on 1 November 1977, almost two years after Concorde. In May 1978, another Tu-144 (an improved version, named Tu-144D) crashed in a test flight while being delivered, and the passenger fleet was permanently grounded after only 55 scheduled flights. The aircraft remained in use as a cargo plane until 1983, by which point a total of 102 commercial flights had been completed. The Tu-144 was later used by the Soviet space programme to train pilots of the Buran spacecraft, and by NASA for supersonic research.

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                    • MTV "Supersonic"


                      from MASSIMO GERMOGLIO / Added

                      6 Plays / / 0 Comments

                      CGI/VFX supervisor&post production executive producer

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