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Rotor blades provide lift proportional to the amount of air flowing over them. When viewed from above, the rotor blades move in the direction of flight for half of the rotation (advancing half), and then move in the opposite direction for the remainder of the rotation (retreating half). A rotor blade produces more lift in the advancing half.
The Sikorsky S-97 Raider is a high-speed scout and attack compound helicopter [2] based on the Advancing Blade Concept (ABC) with a coaxial rotor system [3] under development by Sikorsky Aircraft. Sikorsky planned to offer it for the United States Army 's Armed Aerial Scout program, along with other possible uses. [ 4 ]
Abrasion strips on helicopter rotor blades are made of metal, often titanium or nickel, which are very hard, but less hard than sand. When a helicopter flies low to the ground in desert environments, sand striking the rotor blade can cause erosion. At night, sand hitting the metal abrasion strip causes a visible corona or halo around the rotor ...
The Boeing-Sikorsky team is seen to have an advantage with their large industrial base that may result in wider support from Congress. Their transport helicopters are the most-used in the Army currently. [12] Up to 2013, Sikorsky and partners have spent $250 million on X2 and Raider. [6] The team and aircraft will be separate from the S-97 ...
The Sikorsky S-69 (military designation XH-59) is an American experimental compound helicopter developed by Sikorsky Aircraft as the demonstrator of the co-axial Advancing Blade Concept (ABC) with United States Army and NASA funding.
The Sikorsky CH-53K King Stallion (Sikorsky S-95) [2] is a heavy transport helicopter designed and produced by Sikorsky Aircraft.The King Stallion is an evolution of the long running CH-53 series of helicopters which has been in continuous service since 1966, and features three up-rated 7,500 shp (5,590 kW) engines, new composite rotor blades, and a wider aircraft cabin than its predecessors.
ITT Exelis awarded $15 million contract for composite tail rotor blade assemblies on Sikorsky's S-76D™ helicopter SALT LAKE CITY--(BUSINESS WIRE)-- ITT Exelis (NYS: XLS) has been awarded a ...
The Sikorsky CH-53E Super Stallion is a heavy lift helicopter operated by the United States military.As the Sikorsky S-80, it was developed from the CH-53 Sea Stallion, mainly by adding a third engine, adding a seventh blade to the main rotor, and canting the tail rotor 20°.