812 research outputs found
The development of a laser detonator system
No full text© Cranfield University, 2014Laser detonators offer several advantages over traditional electrical detonators, such as exploding bridgewire and slapper detonators, in terms of both safety and performance. Laser detonators remove the electrical conduction path to the energetic material, providing immunity from threats such as electrostatic discharge and lightning. A larger separation between the initiating energy source and the explosive devices is possible, up to several tens of metres, compared to a few metres for electrical slapper detonators.
A laser detonator system has been developed, with laser-driven flyer plates used to shock initiate the explosive. All aspects of the system, including coupling into an optical fibre, used to transmit the laser energy to the detonator, the optical fibre, the
flyer plate launch and acceleration and subsquent shock into the explosive, and the explosive initiation have been investigated, with an understanding of the underlying principles and processes developed. Shock initiation of two secondary explosives, hexanitrostilbene and pentaerythritol tetranitrate, has been studied at extremely high shock pressures, comparable to the detonation pressure, and the critical energy fluence required for initiation established.
The laser detonator system is robust and optimised, with design tools developed to enable efficient design of future syste
NAM David Harold Blackwell Lecture flyer
No full textFlyer for the 2023 MAA Mathfest conference, showing Dr. Johnny Houston to deliver the NAM David Harold Blackwell Lecture
Writing the Southwest Radio Series Flyer
No full textFront of publicity flyer for radio series, "Writing the Southwest," David K. Dunaway, producer; Rudolfo Anaya, narrator
David Duke Protest Flyer, 1991
No full textFlyer advertising a protest against David Duke\u27s lecture at the Ford Hall forum on Thursday, March 28, 1991. Protest organized by the International Committee Against Racism (InCAR) and the Progressive Labor Party. Black and white image of KKK members, one of which is holding their head, with caption below photo: Klansmen get what they deserve from hundreds of workers and students organized by InCAR. Transcription of flyer\u27s text: David Duke, former head of the Knights of the Ku Klux Klan, and currently a Louisiana State Senator, will be attempting to speak on Thursday the 28th. Duke is a racist who attempts to blame the economic problems workers face on black workers and immigrants. Duke helps the rich rulers of the U.S. divide and conquer the working class so that they can continue with the cutbacks and layoffs. The depression and lousy conditions affect all working people. lnCAR believes in multi-racial unity in order to fight racism and fight back against the cutbacks and unemployment. We say no free speech for fascists . We have tangled with DuKKKe before - what he and the KKK fear most is the organized strength of thousands of workers and students -- asian, latin, black and white -- determined to stop them. Please join us and bring everyone you know.https://dc.suffolk.edu/fhf-docs/1016/thumbnail.jp
David Rodriguez political flyer
No full textBlack and blue text on white paper political leaflet for David Rodriguzes who was running for the Texas legislatureHouston-native David Rodriguez played in folk venues in Houston in the 1970s before moving to Austin to start a newcareer as a lawyer. In the 1990s, he went back to music and relocated to the Netherlands
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David Dondero
No full textPoster/flyer advertising a concert by Crooked Fingers, Azure Ray, and David Dondero on November 28, 2003, at Rubber Gloves Rehearsal Studios. Poster features artwork of a rat lighting the fuse to a bomb
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[Concert Poster: David Dondero]
No full textPoster/flyer advertising a concert by David Dondero with The Unfortunate Heads and Mount Righteous on May 10, 2007, at Dan's Silverleaf in Denton, TX. Poster features the album art for Simple Love, a gradient red to yellow background with a painting of David Dondero
All dolled up flyer
No full textAdvertisement flyer for All Dolled Up, a fundraiser tea party for Gustafson Gallery held at Fort Collins Country Club
Mad Hatter's tea party flyer
No full textAdvertisement flyer for Mad Hatter's Tea Party, a fundraiser for Gustafson Gallery held at Ammons Hall
David Jones photograph, Miami fairground ride, 2006.
No full textDouglas Codona's Yankee Flyer Miami - MM44 - circa 2006
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