Showing posts with the label #cooling

2019 - Year of the Hypersonics

Cooling Hypersonic Vehicles Source:  DARPA Hypersonic Concept Vehicle DARPA's MACH Program The big challenge with hypersonic jets is to keep them cool as they reach a speed of Mach 5 and above.  The US Defense Department's Advanced Research Projects Agency - DARPA - has declared 2019 the year of hypersonics.  DARPA is pursuing new materials and designs for cooling the hot, leading edges of hypersonic vehicles as they accelerate to hypersonic speeds. New Architecture, Materials and Design for Heat Management The new program is called MACH - Materials, Architecture and Characterization for Hypersonics (MACH) program.  DARPA wants totally new, breakthrough technology, not evolutionary improvements on existing technology. Decades of Trying Effective cool down of the hypersonic vehicles at Mach 5 and above is the key factor between success and disaster.  The DARPA MACH programs kicks off in late January 2019.  According to DARPA Program Manager Bill Carter, scientists

Renewable Energy from Space and Sun

Stanford University's Rooftop Renewable Energy Device Source:  Stanford University Provides Electricity and Cooling from Sun and Space Scientists from Stanford University have created a first.  A single device that collects heat from the sun and coldness from outer space.  It simultaneously collects space and solar energy, generates electricity and coolness and functions with great efficiency.  Their research results have been published in the journal Joule. Double Layer Panel Their invention is a double layered rooftop panel.  The top layer is composed of standard semiconductor materials that go into solar cells.  The bottom layer is revolutionary and the combination of the 2 layers is being hailed as a potential gamechanger.  The bottom layer is composed of novel materials that collects the space energy and does the cooling. Dual Functions:  Electricity and Cooling The device combines radiative cooling with solar absorption technology.  On the roof the device would