Mirrorless Spanked at 2014 World Press Photo Comp.

Started 10 months ago | Discussions thread
tko
tko
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uhm, most planes use propellors or turbo fans
In reply to rj conklin, 10 months ago

Since the efficiency of propulsion is a function of the relative airspeed of the exhaust to the surrounding air, propellers are most efficient for low speed, pure jets for high speeds, and ducted fans in the middle. Turbofans are thus the most efficient engines in the range of speeds from about 500 to 1,000 km/h (310 to 620 mph), the speed at which most commercial aircraft operate. Turbofans retain an efficiency edge over pure jets at low supersonic speeds up to roughly Mach 1.6, but have also been found to be efficient when used with continuous afterburner at Mach 3 and above.

rj conklin wrote:

it really doesn't matter what the world press comp. thinks---mirrorless will replace mirrors like jets replaced propellers.

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