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Airbus updates on Skyways urban delivery drone

Airbus Helicopters reports that it plans to start field trials later this year in Singapore of the UAV, which is able to deliver parcels that weigh up to 4kg.

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16 February, 2018



Ehang autonomous aerial vehicle manned flight tests

Chinese firm Ehang announced that it has achieved a series of manned flight tests carrying one and two passengers, including its CEO and government officials.

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06 February, 2018

 

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We'd like to know, what do you think are the greatest engineering challenges to be solved for electric and hybrid aircraft, before they can be used more widely in aviation?

News

Final hot-fire test of the SSME

Pratt & Whitney Rocketdyne completed the final planned test on a Space Shuttle Main Engine (SSME) at the John C. Stennis Space Center (SSC) in Mississippi. The successful hot-fire test was the 2,730th for the SSME, the world’s only reusable liquid hydrogen engine designed for human space flight.

“Because of the extensive testing done at SSC, the SSME is the most reliable and best understood rocket engine ever built,” said Jim Paulsen, SSME program manager, Pratt & Whitney Rocketdyne. “The testing conducted at SSC has been critical to the SSME’s safety record and the evolution of improvements to the engine. We’re all proud to be part of this critical effort in support of human space flight.”

The first SSME hot-fire test was conducted on May 19, 1975, leading to the first space shuttle launch on April 12, 1981. The last shuttle mission is slated for late 2010. The SSME is unique because it provides thrust during the boost and upper-stage ascent of a Space Shuttle, safely sending astronauts into space to assemble the International Space Station, conduct microgravity scientific experiments, deploy large spacecrafts such as the Hubble Space Telescope, and retrieve and return large payloads to Earth. The SSME is one of the most complex machines ever built. Three engines generate 1.5 million pounds of thrust – an energy output equivalent to 13 Hoover Dams.
 


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