As part of the US Navy "coyotes" (Coyote) supersonic sea-skimming missile target (SSST) project of the US Orbital Sciences Corporation has been awarded Aerojet (Aerojet) A MARC R282 ramjet engine (ramjet) of full-rate production contract. This kind of engine uses the deceleration effect of the flow in the intake port at high speed to achieve supercharging, so it can only work under high speed conditions. Aerojet MARC R282 engine allows the "coyotes" target missile cruising speed of up to 3 times the speed of sound, can be used to test US Navy warships - air missile system defenses against this kind of high-speed sea-skimming targets. At present, in the world, some countries equipped with Russian-made Kh-31 air-to-ground missiles and 3M80 ship-to-ship missiles can reach or approach such flight speeds.

Aviation Jet developed the world's first variable-flow ducted rocket (VFDR) ramjet engine for the SSST project, and is the only manufacturer to produce ramjet propulsion missiles for the US military. The contract is the culmination of the company's five-year MARC R282 development projects, in the process the company conducted a total of five successful development flight test, was awarded an initial small batch 2 parts of the contract, and successfully completed the first SSST use Flight test. Under the new contract, the company will produce 19 MARC R282 engine units over the next 18 months.

Maleic Anhydride Grafted Wax

Maleic anhydride grafted PE wax is grafted with maleic anhydride on the carbon chain of Polyethylene Wax under the action of an initiator. Due to the introduction of polar anhydride groups on the non-polar carbon chain, grafted polyethylene wax has better performance and application than polyethylene wax.

Maleic anhydride grafted polyethylene wax is grafted on the carbon chain of polyethylene wax under the action of initiator. In the non-polar polyethylene wax side chain grafted with polar, reactive functional groups, can be used as a lubricant in the wood plastic industry, can also be used as a lubricant of nylon, so grafted polyethylene wax and polyethylene wax, has better performance and use.

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