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In the early 1980s, the U.S. Navy began development of a new mine countermeasures (MCM) force, which included two new classes of ships and minesweeping helicopters.The vital importance of a state-of-the-art mine countermeasures force was strongly underscored in the Persian Gulf during the eight years of the Iran–Iraq War, and in Operations Desert Shield and Desert Storm in 1990 and 1991 when ...
The Lycoming DEL-120 is an aircraft diesel engine produced by Lycoming Engines using automotive technology and initially powering unmanned aircraft. [1] Because the DEL-120 is a non-certified engine and is meant for military use only, there is no civil application of this engine.
Each of the two countries is procuring six new mine countermeasure (MCM) vessels, which makes for a total of 12 MCM ships. The new MCM ships, developed by Naval Group , will include a range of unmanned systems including unmanned surface, aerial and underwater vehicles alongside towed sonars and mine identification and neutralization remotely ...
The YF119-PW-614 on the X-32 had a pitch-axis thrust vectoring nozzle and valves can redirect the engine exhaust and bleed air to provide direct lift, similar to the Pegasus engine on the Harrier. In contrast, YF119-PW-611 on the X-35 had a round axisymmetric nozzle that can swivel downwards while the low-pressure spool drives a lift fan that's ...
The USV will be used for both MCM and ASW. The Mine Countermeasure Module (MCM) is designed to provide minesweeping; remotely detecting and bypassing mines; and minehunting, detecting, and disabling. It was envisioned to perform "influence" minehunting via acoustic and magnetic signatures rather than contact or mechanical minehunting.
The engine was a response to BMW's M70 V12 engine, introduced in 1987. While the 5-litre BMW unit developed 300 metric horsepower (220 kW), Mercedes-Benz upped the ante considerably by creating a 6-litre, 300-kilowatt (408 PS) engine. [1] The M120 family was built in Stuttgart, Germany. It has an aluminium engine block lined with silicon/aluminium.
A four-stroke V12 engine has even firing order at V-angles of 60, 120, or 180 degrees [1] Many V12 engines use a V-angle of 60 degrees between the two banks of cylinders. [2] V12 engines with other V-angles have been produced, sometimes using split crankpins to reduce the unbalanced vibrations. The drawbacks of V12 engines include extra cost ...
The Soviet RD-0120 (also designated 11D122) was the Energia core rocket engine, fueled by LH 2 /LOX, roughly equivalent to the Space Shuttle Main Engine (SSME). These were attached to the Energia core rather than the orbiter, so were not recoverable after a flight, but created a more modular design (the Energia core could be used for a variety of missions besides launching the shuttle).