The Corps is replacing its UH-1N Hueys with the next generation UH-1Y “Yankee,” which debuted this past summer, and now the first three are preparing for their initial operational deployment overseas, joining the 13th Marine Expeditionary Unit and the Boxer Expeditionary Strike Group when they leave San Diego in January.
With four rotor blades instead of two, the Yankee produces a faster, higher pitched “chop-chop” sound, similar to the Navy’s four-blade S-60 Seahawk helicopters. “The tradeoff,” said Maj. Christopher Chown, a Huey pilot leading the H-1 transition team at Pendleton’s Marine Helicopter Training Squadron 303, “is you don’t hear them coming — but that’s a good thing.”
But there is much more to the new Huey than its sound signature. It will provide the Corps with enhanced capabilities: more lift, greater speed, longer range and better survivability. Coupled with a “glass” cockpit, integrated avionics and heads-up helmet displays for the pilots, this bird is a utility helicopter for the 21st century, officials say.
The Y model Hueys are 80% faster and have 76% more lift than N models.


I believe 17% higher max. speed and 30% higher cruise speed are closer to correct than “80% faster”.
80% faster would be a quite quantum leap…
But 30% is already quite a lot.
It’s the new “Warp Core” engines. Get us out of here, Mr. Scot!
Whoops. I pulled those numbers right from the article without verifying.
A quick google shows N has a max speed of 135mph and the Y has a max speed of 191mph. That’s 41% faster. The “228″ figure appears to be the Y’s “never exceed speed” according to Wikipedia, but there are other numbers floating around out there, too, now that I look.
As for the “76% more lift” figure, I don’t know how they’re figuring that, but the Y has a useful load of 6661 pounds and the N has a useful load of 4500 pounds. That’s an increase of 48%.
I’m just totally going to strike that last line of the post.
There are a lot of differing numbers out there. For anyone interested, the Bell website has a UH-1N pocket guide (.pdf):
http://www.bellhelicopter.com/en/aircraft/military/pdf/UH1Y_PG_3-06_web.pdf
According to it, the pertinent numbers for the UH-1Y are:
Long Range Cruise Speed: 155 mph
Maximum Continuous Speed: 182 mph
Dash Speed: 188 mph
Dive Speed: 228 mph
Info I garnered on the N had top speed between 135 and 150 mph and cruise speed of 115 mph.
I am wondering why did the USMC did not go with the AH-64 with the Army? Cost vs performance? Range?