A joint South Korean and American research group has developed a scalable production method for a state of the art alloy for the use in solid state thermoelectric devices. This new alloy is nearly twice as efficient as existing materials and may lead to a new host of applications. Uses include refrigeration, consumer electronics, transportation …
An unclassified Navy assessment called “Cruise missile warfare” described the relationship with the amount of explosives or missile hits too the size of the ship being disabled. Ship vulnerability is related to the cube root of displacement. This means a 100,000 ton displacement aircraft carrier needs to be hit with twice as much explosive to …
An unclassified Navy assessment called “Cruise missile warfare” described the relationship with the amount of explosives or missile hits too the size of the ship being disabled. Ship vulnerability is related to the cube root of displacement. This means a 100,000 ton displacement aircraft carrier needs to be hit with twice as much explosive to …
The FAA is years late in approving commercial use of drones and has violated numerous congressional deadlines. Mr. Bezos says regulatory inertia—not massive R and D—is blocking Amazon’s futuristic plan to have low-flying vehicles deliver within 30 minutes the 85% of its packages weighing less than five pounds. The FAA added insult to injury by …
The FAA is years late in approving commercial use of drones and has violated numerous congressional deadlines. Mr. Bezos says regulatory inertia—not massive R and D—is blocking Amazon’s futuristic plan to have low-flying vehicles deliver within 30 minutes the 85% of its packages weighing less than five pounds. The FAA added insult to injury by …
Efforts to produce lighter vehicles necessarily include engine parts, such as the cylinder casing, which could shed up to 20 percent of its weight if it were made of fiber-reinforced plastic rather than aluminum – without added costs. Such injection-molded parts are even suitable for mass production. Until now, carmakers have relied on aluminum to …
Efforts to produce lighter vehicles necessarily include engine parts, such as the cylinder casing, which could shed up to 20 percent of its weight if it were made of fiber-reinforced plastic rather than aluminum – without added costs. Such injection-molded parts are even suitable for mass production. Until now, carmakers have relied on aluminum to …
1. Current subs use 1-inch-thick rubber foam to reduce sonar detection. Materials scientists at Université Paris-Diderot, the University of Manitoba, and PSL Research University are working on a technique to create a much thinner sheet of rubber populated by thousands of bubbles that work to deflect sonar while saving on weight over the bulky foam. …
1. Current subs use 1-inch-thick rubber foam to reduce sonar detection. Materials scientists at Université Paris-Diderot, the University of Manitoba, and PSL Research University are working on a technique to create a much thinner sheet of rubber populated by thousands of bubbles that work to deflect sonar while saving on weight over the bulky foam. …
Over half of the world’s submarines will be in Asia by 2030, as Japan, Australia, Indonesia, Malaysia, Pakistan, India, China, Taiwan, Vietnam and Singapore, modernize their militaries and look to hedge against instability by building undersea fleets. * Pakistan is buying eight submarines from China and is looking for surplus European submarines * Vietnam has …
Over half of the world’s submarines will be in Asia by 2030, as Japan, Australia, Indonesia, Malaysia, Pakistan, India, China, Taiwan, Vietnam and Singapore, modernize their militaries and look to hedge against instability by building undersea fleets. * Pakistan is buying eight submarines from China and is looking for surplus European submarines * Vietnam has …