Anyone flown (or fly) the Huey?

[BGRing]

Less
Hi. Not a Pilot myself, but was talking to one today. Says he flew hueys in Aus Military. This i Do not doubt.
But I was asking Him about Transverse flow and such, and i mentioned how my Little RC heli has a High RRPM 2400 to 2800 (It is Little) and he mentione that the Huey hey flew had a RRpm of 250 odd. then he corected to 350 odd. then he corected to 3000 something. (At this point, I just said in total disbeleif, Naooo. As if to say. You must be kidding. Then he sait it was 6600) then the Captan Checked if he was talking about Rotor RPM he said. yeah. I said (Naoooo)

I think he must be Kidding or mistaking something else for RRPM (Prior to this. he knew me as they guy who flys Modle heli and Aero, so we got talking) Could you clear this up.

Actualy Any one ....

I searched Rotorheads for a couple of Hours. and the Net netted nothing but %'s..

Thanks in advance.

PS, Is there ANY heli that has a RRPM of over 1000

[Attila]

RPM Question

BGRing
From my dim and distant past, flying the AB205A in the Omani Air Force back in the late '70s, I seem to recall that the N2 or free turbine gauge was calibrated in RPM, not a percentage. The usual operating rpm was, (and anyone feel free to correct me here), I think, 6600! This may account for a slight memory lapse by your former Aus Military friend.

Great machine to fly, too.

[BGRing]

OK so this sounds like it may be the thing.

Here is my Pre information i would like should i see him again..

Q/ I think i understand that there is a N1 and N2 these are the Turbine. but which is the "Hot end "turbine and which is the ?? N1 or N2 or ??

is the main rotor driven directly off which one ??

squish drink burn push NearlyFree Push free (This is probably wrong but ...)

Thanks in advance again.
any one got a Definative RRPM.

I am curently wondering if 6600 is the 2nd stage wheel (Push/Fan/turbine?) that is Directly driveing the main Rotor.(If so what is the RRpm or what is the Reduction ratio from N2.

[spinwing]

UH 1 and Bell 205/212 series Nr is 294 to 324 RPM .....


Vaguely remember 100% Nr as being 310 RPM ??? and 6600 RPM being the short shaft speed ie output from engine to Main Xmsn.


Cheers

[Heli-Ice]

What can you say about Phil's Huey project?

I have great respect for this kind of mindset.

Phil and his people show those guys who flew the aircraft back in Vietnam great respect by doing this.

10 out of 10.

[kulttt]

UH-1 question

I have a Q about helicopter aerodynamics
It says(UH-1 MANUAL) "in event of eng failure during left bank maneuver, aircraft must be rolled to right simultaneously with lowering collective, otherwise aircraft will pitch down and left roll rate will increase..." and resulting in a significant loss of altitude....
what is the point that Huey will pitch down and overroll to left in thiz case unless pilot roll aircraft to right simultaneously with collective lowering?

[Shawn Coyle]

I've never heard of this in a UH-1 manual before - not that I'm that experienced in the UH-1. I suspect it is in there because of an accident where someone thought this may have been a contributing factor.
Probably more correctly stated, it may have been if you are rolling left and have an engine failure - a steady bank angle shouldn't make that much difference unless you delay your reactions a long time.
UH-1 experts???? Over to you.

[npage]

The UH-1 (and OH-58A/C) would develop a noticably greater nose-down attitude (and subsequent greater rate of descent) if right pedal was not applied during engine/simulated engine failures in a left bank. The left yaw while in the bank was the culprit, as I remember.

[kulttt]

uh-1

thank you guys, I aggre with npage. I have heard same thing about UH-60. I think this is specific for UH-1 and OH-58A/C... and also I am planing to buy a comprehensive helicopter aerodynamics book, any suggestion?

[kulttt]

UH-1

Thank you friends,
I think I aggre with npage, I have never heard about that "leveling helicopter" incident for other helicopters at least for UH-60 as a blackhawk pilot. anyway I plan to buy a helicopter aerodynamics book, any suggestion?

[B Sousa]

I think before we take this farther, we must clarify that it is a UH-1 Manual. If so it will say on the top TM55-1520-210-10. That be the case please list the Chapter and Page for reference so I can have a look/see. I have the manual.
I know the UH-1 has some little things that need to be considered, just cant find the reference.

[npage]

Paragraph 9-9.b.(4) on page 9-2.

[Arm out the window]

Which model? I can't remember anything like that for the B or H.

[ECB4]

Curious

It's been over 10 years but I do remember reading that in the manual. Never asked and never figured out why but the old girl really came down nice and quick in those left hand spirals and the nose did have a tendency to tuck under a little. Do miss the old girl, and will be interested in the aerodynamic reason for it to be in the manual.

[B Sousa]

Npage
Thanks for that, but I was curious about the book that Klutt has. If in fact it was a -10. without going to the manual I assume the item is in da book.

I assume it has to do with the advancing blade stuff......I do remember some serious Torque problems when either turning left or right from pullout in the M model while on Gun Runs. High Tq one way, low Tq the other

[kulttt]

uh-1

TM 55-1520-210-10 UH-1H/V HELICOPTERS OPERATOR'S MANUAL change 19 (31 dec 2002)
pra 9.9 b.4

[B Sousa]

Dats da one........... If your planning on flying a Huey. One thing that many have not seen is what we call the PPC card. Its filled out before you load it to the ceiling with morons, full fuel on a Hot and High day.
It is (DA Form 7243-R4, Nov 92) UH-1 Performance Planning Card and the instructions for use are in TC 1-211. All that mumbo jumbo is out on the internet.
But, If used properly you wont break, or at least should not break the Helicopter.
Have some safe flying (over 20 years in that Beast alone)
UH-1 (A)(B)(D)(H)(M)(V) and EH-1

[rotorboy]

You guys are making me homesick talking about the Huey. Lately I have been whishing I had my 205 back, rather than this plastic thing here in the jungle..

Here are a few photos from last summer in MT. Hot and High and full of people!

This one has the -17, the 212 M\R and T/R, and tail boom( A1++) . It is one year older to the month, than I am ! We are best friends, I miss her:













RB

[B Sousa]

RB
Where be that Colorado?? Nuevo Mexico

[rotorboy]

Montucky. Bob Marshall Wilderness. South of Glacier NP. West and North of the Sun River.

Flying that thing is fun.

Photos at the lookout taken from the USFS Lead Plane. The others taken by my crew.

The lookout tower was @ 9700'.

RB