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Sikorsky rolls out CH-53K

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Sikorsky rolls out CH-53K

Old 2nd Feb 2019, 04:14
  #81 (permalink)  
 
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I see more 53's flying with landing gear down...than up....even in formations where some aircraft in the formation have gear up...and others gear down.

Being an Army Chinook Pilot....there is an opening for some good fun about Marines and their figuring out they landed gear up......but I shall not lower myself to that level.

The Army thought ahead on that.....and saw to it we could only accomplish that by tearing the fixed legs off the old girls.
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Old 2nd Feb 2019, 06:06
  #82 (permalink)  
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Old 11th Feb 2019, 01:49
  #83 (permalink)  
 
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Originally Posted by Willard Whyte View Post
With 27,000 lbs of kit slung underneath. One would hope the mission radius is a little more when not carrying so much stuff...
That "short" mission radius is while carrying a 27,000-lb LAV. And I believe that this is at ISA+15 or 20C and even delivering to a certain altitude of a few thousand feet at least. The mission radius with 55 pax (assuming 200 lbs/pax) would therefore be about 180 nm. That's what it was designed to do. The normal (VFR) range (roughly 2 x ROA) of the CH-53E was about 450 nm and the MH-53E about 625 nm as I recall.

The Navy could have given it more fuel like the MH-53E (~22,500 lbs if I remember correctly) but its just not needed often. When they need to they can always just call in a KC-130 for AAR refuleling. I do recall someone in my squadron "inadvertently" lifting a 39k lb load once (steel ship cradle I believe) in bay of Siracusa. 53A-D were superb, 53E's performed awesomely but had serious safety and reliability issues...hopefully lessons learned and applied by today's "nextgen" engineers in Stratford have made the K the ultimate PRODUCTION heavy-lift category helicopter in the world...Nothing like the sound and feel of the 53 starting up or flying by !
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Old 11th Feb 2019, 01:56
  #84 (permalink)  
 
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Originally Posted by The Sultan View Post
From Flightglobal:



What happened to the cruise speed of 170 Knots? For $25 Billion+ the US should be getting something faster that an ASTAR or 407. So the V-22 is twice as fast.

The Sultan
There is a difference between "cruise speed" and "Max cruise speed" (often called "Vh"). The 53E's recommended cruise speed was actually 130-140 max so that's probably what's being referred to in this "141 kt" figure. The Echo flew great straight & level at 170 kts so I'm sure that the K can at least equal that figure since it was already published...there is just no point - harder on the components, fuel burn peaks disproportionately - all to get sailors or marines or cargo to their destination just a little faster (assuming peacetime ops where its not critical). Same thing applies for "your" V-22 I am sure with cruise & max cruise speeds. Same principle applied for the Concorde probably also !
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Old 11th Feb 2019, 02:00
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Originally Posted by dagenham View Post
Lets hope they dont try to roll this one ...the last time didn't end well.

Amazing machine the " homer" shame only two built, but when the soviet air force says niet you know you have problems!

Any one know if the eu / uk heavy lift competition still going on, i seem to remember a supersize euro tandem twin design being flashed about..... This and the king would be an interesting sight
Not sure what "last time didn't end well" is based on; Frank Tefft - "THE" legend of 53's did the maneuver and it went just great ! All he had to do is compensate with a little "dishout" as he described it to compensate for the loss of lift while inverted to keep altitude. Bravo - hope he is still enjoying his retirement now in Madison Connecticut I believe !
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Old 11th Feb 2019, 09:51
  #86 (permalink)  
 
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Amazing machine the " homer" shame only two built, but when the soviet air force says niet you know you have problems!
I remember seeing that thing at the 1969 Paris Air Show. It lumbered along making a most fearful racket and looked like it was barely controllable....
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Old 11th Feb 2019, 12:36
  #87 (permalink)  
 
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ORAC,..... Perhaps it is where and who is doing this Testing that has more to do with the problems than the problems themselves.

I bet had the testing. been done at Sikorsky the progress and resolutions of the issues would be far quicker.

Look into how the Testing process came about and you will understand my comment.

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Old 11th Feb 2019, 14:49
  #88 (permalink)  
 
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"but when the soviet air force says niet you know you have problems"

there's a view that the Russians are willing to send out their crews in any old rubbish - but I seem to remember t an other country who built 3 types of jet bomber with seats for the pilots and a deathtrap door for their crews........
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