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CH-148 Cyclone is the worst I have ever seen for downwash. It is downright unpleasant to work under the helicopter and it can be difficult to not get blown off your feet.
Future Helicopters
- Thread starter a_majoor
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Well, they put almost EH-101/CH-149 weight into a footprint slightly larger than a Sea Hawk…the math sucks…are more accurately, blows…a LOT! It has a weight loading of 11.1psf, so between a Black Hawk and a Super Stallion.
KevinB
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Because I haven’t read it yet (as I wasn’t sure I would fully understand it) is the min number at hover, and max pull all up being the most it will push when the pilot is clawing for air with max collective/throttle?
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how would the downwash on the defiant compare?
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It has to do with how heavy the helicopter is. AUW= All Up Weight
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This, KevinB. The figures are for relative comparison in a stabilized hover at the light/heavy extreme of weight. Hover can occur either In or Out of Ground Effect (HIGE/HOGE) which also affects downwash (HIGE results in lower downwash due to the cushion effect of the air being compressed between the low hovering helicopter, versus high OGE). That’s why sometimes skid-equipped helos would hover much lower than standard when hover taxiing near other aircraft…particularly if not secured/tied down well. The report gets into other factors as well, but the psf disc loading figures are a very decent comparative representation amongst various rotorcraft.
I haven’t seen detailed specifications, but roughly think with a similar main rotor disc area and approx 50% greater gross weight than the Black Hawk, they’ll see a moderate increase in thrust/rotor psf on the Max AUW end of the weight spectrum. I’d guess something like 8.5-13.0 psf, so between a Black Hawk and Sea Stallion.
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An added problem on the Cyclone are the massive sponsons which create an incredible burble of disturbed air that does not separate cleanly from the fuselage…
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Chinook: Here, hold my beer!
…just kidding…those sponsons while both large and long, are well shaped to have much smoother airflow than even the standard Hook sponsons.
Weinie
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And the rear view is even better.
OldSolduer
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I fuckin love those helicopters, my favorite aircraft bar none. Hercs are a close second. But then again y'all know what I eat....
KevinB
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Army Futures Command incorporates international partners into annual demonstration
DUGWAY PROVING GROUND, Utah – Army Futures Command’s Future Vertical Lift Cross-Functional Team kicked off its annual Experimental Demonstration Gateway...
www.army.mil
Army's Future Vertical Lift eyes future skies
AUSTIN, Texas — Future conflict is likely to occur over wide areas and across multiple domains, according to recent Army assessments of the future opera...
www.army.mil
Rumor has an award is imminent for FLRAA - with the decision on FARA in 2023.
Spencer100
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Bets anyone?
Army Futures Command incorporates international partners into annual demonstration
DUGWAY PROVING GROUND, Utah – Army Futures Command’s Future Vertical Lift Cross-Functional Team kicked off its annual Experimental Demonstration Gateway...
Army's Future Vertical Lift eyes future skies
AUSTIN, Texas — Future conflict is likely to occur over wide areas and across multiple domains, according to recent Army assessments of the future opera...
Rumor has an award is imminent for FLRAA - with the decision on FARA in 2023.
FLRAA Lockheed
FARA Bell
Since they won't want to give both to thr same company.
KevinB
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Bell was in Benning last week for a Hail Mary on the V-280 -- I think they know that ship sailed though.
Given the V-22 issues in SOCOM, I don't see Tilt Rotor getting the nod -- plus the size requirements for the landing area is much larger than the Defiant X.
I am not so sure they won't give both to LocMart, the Boeing partnership really made tough, as the Army is already all in on LocMart (Sikorsky) and Boeing, and it looks like the Hook replacement will also be a JV between the two.
Bell only has standing with the USMC, so no sacred cows to provide top cover for them with anything in FVL
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Just on momentum alone, HVL is likely not going to hit the 2030-2040 band without a 12-15 year ROLEX right…
KevinB
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Yeah, albeit, I did double check my trusty https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN32045-ATP_1-02.1-001-WEB-3.pdf
ROLEX is supposed to be Min or Hrs +/- not years
Given that FLRAA is just about to be entering contract award, and not expected to be a fleet replacement until 2030 (to which I am still snickering -- my guess is 2035), I don't see any ambition to try to shoehorn FLRHA into 30-40, I am guessing start at 40, and 55-60 would be fleet conversion (baring any major incidents that could slow it down).
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Extraordinary times call for extraordinary measures…ROLEX is supposed to be Min or Hrs +/- not years
KevinB
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Come on - this not a Canadian procurment
