Energy & Propulsion

As computer processors have continued to shrink down to sizes where billions of transistors are on single chip, heat has increasingly become a bigger factor in their performance. If those CPUs did not get as hot in the first place, then much less energy would be needed to keep them …

Heat (i.e., thermal energy) is defined as the energy that is transferred spontaneously between two bodies due to difference in their temperature; heat flows from high to low temperature. There are three main well-known mechanisms for heat transfer: conduction through solid and fluids, convection through fluid, and radiation through solid, …

Naval Warfare depends a large extent on lethality and survivability of submarines, its principal weapon, therefore Navies have been researching new ways to make them quieter and increasing their underwater endurance. Propulsion system plays an extremely important role in the functioning of a submarine for the completion of its desired …

A fuel cell is a device that generates electricity by a chemical reaction. It converts hydrogen and oxygen into water, and in the process also creates electricity. Fuel cells provide many advantages, they are environment friendly as they don’t produce pollutants or greenhouse gasses, significantly improving our environment, high energy efficiency ( …

A directed-energy weapons (DEW) are ranged weapon systems that inflicts damage at a target by emission of highly focused energy, including laser, microwaves and particle beams. Potential applications of this technology include anti-personnel weapon systems, missile defense system, and the disabling of lightly armored vehicles or mounted optical devices   …

The Internet-of-Things is an emerging revolution in the ICT sector under which interconnecting physical objects communicate with each other and/or with humans over internet in order to offer a given service.  The Internet of Things (IoT) is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people …

Sometimes long runways  required by conventional aircrafts aren’t available to use or there is a need for an aircraft to use no runways at all.  Vertical take-off and landing VTOL technology means aircraft can theoretically take off and land almost anywhere, making them far more flexible. They’re also able to perform …

Ladakh accounts for more than two-thirds of the land area of the Indian state of Jammu & Kashmir. As a high altitude cold desert, though, it hosts only about 5% of the state’s population. With the mercury dipping to minus 20 degrees Celsius or lower during winter nights, and about minus …

Because of higher density chips, the design of more compact electronic components makes heat dissipation even more difficult. All advanced electrical or electronic devices are facing heat management challenges due to the increased levels of heat generation and the reduction in the surface area for heat rejection or dissipation. So …

Today U.S. soldiers are being killed because the Defense Department cannot deploy all the sensors it would like to. DoD could  deploy sensors every few yards to detect  buried  improvised explosive device (IED). As it is, every sensor deployed today has to be battery powered, so even if vast sensor nets …