04-02-2012, 11:31
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חבר מתאריך: 23.09.03
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The MH-60S Knighthawk is a departure from the S-70B line, being based on the S-70 / UH-60L airframe. The reason for the switch was that the primary focus of the MH-60S is in the utility-transport role -- as its initial designation of "CH-60S" suggested -- and not the maritime warfare role. At the outset, the MH-60S was seen as a replacement the Navy's Boeing CH-46 Sea Knight, which is likely where the "Knighthawk" name came from, but the scope of the effort expanded, and in fact the MH-60S is just as much a "multi-mission" machine as the MH-60R MMH; it's just that the sets of missions are different.
The MH-60S was intended to not only replace the CH-46 Sea Knight in the utility and transport role, but operate in the CSAR / special operations role as a replacement for the Navy HH-60H Rescue Hawk, and in the mine countermeasures role to replace the Sikorsky CH-53E Sea Dragon. Although the Navy originally thought of refurbishing old S-70Bs for the program, mission creep meant that the price of refurbishing floated up towards the price of new machines until it made more sense to "buy new".
As noted, the MH-60S is derived from the S-70 / UH-60L, featuring the tailwheel under the tailfin, not moved forward as it is for S-70B machines; the overall window and door arrangement of the UH-60L; compatibility with the ESSS stores pylons; and such items as armored aircrew seats, cable cutters, and infrared exhaust suppressors.
However, the MH-60S is a hybrid, featuring a large amount of kit from the SH-60B Seahawk, including marinized T-700-GE-401C engines; the Seahawk dynamic system; a rotor brake, automatic blade folding, and a folding tail; hover inflight refueling capability; plus the rescue hoist and jettisonable cockpit doors from the Seahawk. It also features the new glass cockpit of the MH-60R, plus a new cargo handling system. The Navy is currently working with the Army on a "Common Engine Program" that will provide an improved powerplant for the Knighthawk, to be fitted in late production machines or retrofitted to operational machines.
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Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. -Rick Cook
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