CH-53K King Stalion vs. CH-47F Chinook

Helicopters and tilt-rotor aircraft
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madrat

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Unread post05 Jun 2018, 03:47

Does anyone ever foresee a 4-6 main propeller arrangement in the future in some kind of electric hybrid helicopter? Chinook with sidewing electric mounts that rotate as forward drive props would give it a considerable power boost in forward flight. You could reduce main propeller length to mitigate flapping in forward flight. The reality is, even with one of your petrol powered motors down, the electrics give you a chance to set down in a better location than wherever a corkscrew landing would place you by sheer chance.
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sferrin

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Unread post05 Jun 2018, 12:59

discofishing wrote:I think the CH-47 platform in a USMC variant would do just about everything a CH-53K could do, for the most part.


Can it sling 36,000lbs? Can it equal published payload/range/altitude of the K?

"The CH-53K can carry a 12.200 kg/27,000 lb external load over 204 km /110 nautical miles in high/hot conditions (33°C/91.5°F at an altitude of 914m/3,000 feet), "

discofishing wrote:Given it is less prone to retreating blade stalls it can probably fly faster.


Is the CH-53 actually prone to blade stalls? It's designed cruise speed is 195 mph. What is the CH-47s? Hmmm. According to Boeing's own site the CH-47s TOP speed (302 km/h) is less than the K's cruise speed (315 km/h):

https://www.boeing.com/defense/ch-47-chinook/

discofishing wrote:With all the power dedicated to two main rotor systems instead of worrying about a tail rotor, it might just do better at higher altitudes.


The CH-53K has 22,500 shp on tap. The CH-47F has less than half that. A tail-rotor doesn't use that much power.

discofishing wrote:For the most part, the Marines got a good bird in the Kilo model Stallion. I hope other countries buy it so at least some amount of economy of scale can be realized.


Germany apparently wants 40-ish (assuming they pick it over the CH-47, which is probably likely given they already operate CH-53s.)

discofishing wrote:The next administration might push to chop defense spending.


If they're democrats it's a certainty. They want their Venezuelan socialist utopia you know.
"There I was. . ."
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