Defense http://machinedesign.com/taxonomy/term/8209/more en High-Tech Seal Provides Another Level of Security http://machinedesign.com/fasteners/high-tech-seal-provides-another-level-security <div class="field-deck"> Using unique functions, tamper-proof seal can tell users if anyone has opened a container or tried to defeat the seal. </div> <div class="node-body article-body">Researchers at Sandia National Laboratory, Albuquerque, N.M., have developed a tamper-proof seal that will tell users if anyone has opened a container or tried to defeat the seal....</div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/fasteners/high-tech-seal-provides-another-level-security" target="_blank">read more</a></p> http://machinedesign.com/fasteners/high-tech-seal-provides-another-level-security#comments Defense Medical Fasteners Materials Tue, 04 Aug 2015 20:29:00 +0000 50921 at http://machinedesign.com Lockheed Martin to Purchase Sikorsky Aircraft http://machinedesign.com/defense/lockheed-martin-purchase-sikorsky-aircraft <div class="node-body article-body"><p>Lockheed Martin has entered a $9.0-billion definitive agreement to acquire United Technologies&rsquo; Sikorsky Aircraft, a global provider of military and commercial helicopters. </p></div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/defense/lockheed-martin-purchase-sikorsky-aircraft" target="_blank">read more</a></p> http://machinedesign.com/defense/lockheed-martin-purchase-sikorsky-aircraft#comments Defense News Tue, 21 Jul 2015 14:09:00 +0000 50481 at http://machinedesign.com <p>Lockheed Martin collaborated with&nbsp;Sikorsky&nbsp;to build the MH-60 naval helicopter.&nbsp;</p> Photo courtesy of Lockheed Martin Navy Develops Space-Junk Spotter http://machinedesign.com/defense/navy-develops-space-junk-spotter <div class="node-body article-body">With more than 100 million pieces of debris orbiting Earth that measure less than a centimeter in diameter, researchers at the U.S. Naval Research Laboratory wanted to learn more about how such debris behaves in space.</div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/defense/navy-develops-space-junk-spotter" target="_blank">read more</a></p> http://machinedesign.com/defense/navy-develops-space-junk-spotter#comments Defense News Fri, 10 Jul 2015 21:56:00 +0000 50251 at http://machinedesign.com 8 Little-Known Facts about the Hubble Telescope http://machinedesign.com/blog/8-little-known-facts-about-hubble-telescope <div class="node-body blog-body">What don’t you know about the Hubble telescope?</div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/skeptical-engineer">A Skeptical Engineer</a></li> </ul></div><p><a href="http://machinedesign.com/blog/8-little-known-facts-about-hubble-telescope" target="_blank">read more</a></p> http://machinedesign.com/blog/8-little-known-facts-about-hubble-telescope#comments Defense Community A Skeptical Engineer Thu, 02 Jul 2015 16:29:00 +0000 50091 at http://machinedesign.com 8 Stealthy Military Vehicles http://machinedesign.com/defense/8-stealthy-military-vehicles <div class="node-body gallery-body">By the 1970s, engineers had discovered how to build structures that were difficult, if not impossible, to see on radar.</div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/defense/8-stealthy-military-vehicles" target="_blank">read more</a></p> http://machinedesign.com/defense/8-stealthy-military-vehicles#comments Defense Gallery Mon, 20 Apr 2015 19:27:00 +0000 48121 at http://machinedesign.com GALLERY: Seven Aircraft from the Skunkworks http://machinedesign.com/defense/gallery-seven-aircraft-skunkworks <div class="node-body gallery-body">A gallery of aircraft that came out of Kelly Johnson’s Skunkworks at Lockheed Martin Corp.</div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/defense/gallery-seven-aircraft-skunkworks" target="_blank">read more</a></p> http://machinedesign.com/defense/gallery-seven-aircraft-skunkworks#comments Technologies Defense Gallery Thu, 26 Mar 2015 18:51:00 +0000 47681 at http://machinedesign.com The Basics of Sonic Booms http://machinedesign.com/defense/basics-sonic-booms <div class="node-body article-body">Sonic booms are the thunderclaps of noise created when an object surpasses the speed of sound. The larger the object, the more air it displaces and the larger the shock wave.</div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/defense/basics-sonic-booms" target="_blank">read more</a></p> http://machinedesign.com/defense/basics-sonic-booms#comments Defense Mon, 23 Mar 2015 15:03:00 +0000 47481 at http://machinedesign.com Supersonic Flight: Overcoming the Sonic Boom http://machinedesign.com/defense/supersonic-flight-overcoming-sonic-boom <div class="field-deck"> NASA and private companies are pushing research to reintroduce supersonic flight to the aerospace market. </div> <div class="node-body article-body">NASA and private companies are pushing research to reintroduce supersonic flight to the aerospace market.</div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/defense/supersonic-flight-overcoming-sonic-boom" target="_blank">read more</a></p> http://machinedesign.com/defense/supersonic-flight-overcoming-sonic-boom#comments Defense Motors/Drives Mon, 23 Mar 2015 14:04:00 +0000 47461 at http://machinedesign.com Nanotubes Keep Drone Wings Ice-Free http://machinedesign.com/defense/nanotubes-keep-drone-wings-ice-free <div class="node-body article-body"><p>Engineers at Battelle Memorial Institute, Columbus, Ohio, have tested their HeatCoat, a device for keeping ice off the wings and control surfaces of drones. It consists of a carbon-nanotube coating that can be sprayed on or applied in flexible sheets. Sending electricity through the panel or coated area generates enough heat to prevent ice from forming and break free any ice that has formed. A controller monitors weather conditions and heater performance, ensuring power is only used when needed.</p></div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/defense/nanotubes-keep-drone-wings-ice-free" target="_blank">read more</a></p> http://machinedesign.com/defense/nanotubes-keep-drone-wings-ice-free#comments Defense Wed, 25 Feb 2015 22:13:00 +0000 46761 at http://machinedesign.com X-planes: The Next Eight: X-24 through the X-38 http://machinedesign.com/defense/x-planes-next-eight-x-24-through-x-38 <div class="node-body gallery-body">X planes from 1959 through 2002 were used to explore technologies that would be later used on the Space Shuttle, on fighter aircraft, and drones. </div> <div class="og_rss_groups"></div><p><a href="http://machinedesign.com/defense/x-planes-next-eight-x-24-through-x-38" target="_blank">read more</a></p> http://machinedesign.com/defense/x-planes-next-eight-x-24-through-x-38#comments Technologies Defense Gallery Thu, 29 Jan 2015 14:43:00 +0000 45781 at http://machinedesign.com <p>X (experimental) aircraft and spacecraft were built by aviation companies but were flown and maintained by test pilots from NASA (or its predecessor, NACA), and the military. These planes, the X-24 through the X-38, cover the period from 1959 through 2002. Some were used to explore technologies that would later be used on the Space Shuttle. Others pushed the envelope in terms of control and flight surfaces, knowledge that would be used on fighter aircraft as well as drones.</p>