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The Northrop Grumman E-10 MC2A was planned as a multi-role military aircraft to replace the Boeing 707-based E-3 Sentry and E-8 Joint STARS, the Boeing 747-based E-4B, and the RC-135 Rivet Joint aircraft in US service. The E-10 was based on the Boeing 767-400ER commercial airplane. In 2003, the Northrop Grumman, Boeing, and Raytheon MC2A team ...
Download as PDF; Printable version ... In the world of model aircraft there are several competition classes to signify engine displacement . Class Cubic Inches Cubic ...
The aircraft was to provide a survivable platform to conduct war operations in the event of a nuclear attack. Early in the E-4's service, the media dubbed the aircraft as "the doomsday planes". [6] The E-4 was also capable of operating the "Looking Glass" missions of the Strategic Air Command (SAC). [14]
The E-4B "Nightwatch" is nicknamed the "doomsday plane" because it can survive a nuclear attack. In the event of nuclear war, it would serve as the US military's command and control center.
Four-stroke model engines have been made in sizes as small as 0.20 in3 (3.3 cc) for the smallest single-cylinder models, all the way up to 3.05 in3 (50 cc) for the largest size for single-cylinder units, with twin- and multi-cylinder engines on the market being as small as 10 cc for opposed-cylinder twins, while going somewhat larger in size ...
The reduced size affects the model's Reynolds number, which determines how the air reacts when flowing past the model, and compared to a full sized aircraft the size of control surfaces needed, the stability and the effectiveness of specific airfoil sections may differ considerably requiring changes to the design.
Research into the next generation of commercial jet engines, high-bypass ratio turbofans in the "10-ton" (20,000 lbf; 89 kN) thrust class, began in the late 1960s. Snecma (now Safran), who had mostly built military engines previously, was the first company to seek entrance into the market by searching for a partner with commercial experience to design and build an engine in this class.
In January 2023, the Doomsday Clock was set at 90 seconds to midnight, the closest to midnight it has ever been, in large part because of the nuclear threat posed by Russia’s war on Ukraine.