The R22 corner: Owning, flying & training questions

[choppertop]

Fellas, delighted we've ignited on this. Woo hoo.

1. I've checked the POH and the C of G schedule in the tech docs and no lateral arm listed that we could see on either of the 22s at the school.

2. John Swan's book bases his calcs for BEM lateral arm on zero.

3. Are you suggesting, CF, that I'm a bit of a porker? A trim 155lbs if you please...

[Cynicstick]

I'd go with your instructor on this! Try not to get bogged down with minutiae but pay particular attention to MAUW though with Mr Cross on board! Good luck with your LST.

[helimutt]

you saying he's fat?

[212man]

If the aircraft is not symmetrical, how can it be 0? Fuel tank on the left, TR on the right, POM under the seat etc

[sebbo]

Questions concerning R22

Hi

I have two questions concerning the Robinson R-22 helicopter.

1. When the Cylinder head temperature gage stops working while in flight, and shows the same as when shut off, what does that mean?

2. How much max. takeoff power can we pull when we are in a R22 Beta, at
5000ft. pressure altitude and and OAT of 18degree celsius. And what does the
Full Throttle on the Chart mean?

Thanks in advance
Best regards

[Chopper Doc Junior]

Either the cylinder temperature head thermocouple is broken or the wires are broken or you have a guage problem. No way of knowing until you investigate it. If your maintenance people have a thermocouple test set then it is a easy problem to diagnose.

Can't answer your other question though.

[tattooed]

Ditto on #1


#2-Refer to your POH. You cannot pull more than FT. If you DO, you will destroy your drive train. The engine on the R22 is stronger than Frank's lightweight drive train (part of the derating and hence lower operating costs).
Weight aside, with the parameters you gave, 23.5" is all you've got, and probably not much avail at that PA.


~T

[topendtorque]

And what does the
Full Throttle on the Chart mean?

you are high enough to have wound the throttle right up against the stops, (make sure that you have not exceeded the POH power limits) now as you climb higher you will notice that the MAP decreases, there is no more left. You must maintain RRPM by lowering the collective.

You will also enter a realm of dicsussing as to whether this is the most ecenomical range setting and other interesting arguments. There are threads on the subject (s)?.

To run a motor in, that hasn't been on a test truck it is where we go for about 45 minutes.?? that's a small outside the square trick.
tet

[VeeAny]

While writing up some training notes today I came across this and remembered this thread, thought I'd post it in case its of use to anyone with a similar Question in the future.



Its an extract from a Robinson R22 Pilots Operating Handbook in the weight and balance section.

[800]

Start with the proper information

If your Mechanics (Engineers), ie your approved weighting specialist, has not provided a lateral arm and moment on the intial aircraft weight details then they are not doing their job properly.

If this has occured, you may find that they usally weigh fixed wing aircraft!

As said before you cannot compute a lateral CG if the base figure is not there, irrespective whether your particular loading would exceed a limit or not.

Just by placing a pilot in the PIC seat you usually (most types) are imposing a lateral CG condition. You may (and should not, in this instance), exceed any limitation BUT you should now it is there.

Start with the basics and HASSLE you Mechanics for the RIGHT info.



800

[muffin]

I remember a thread here many years ago that came to the conclusion that you should have the wind in your left hip pocket when slowing the blades down in gusty conditions.

[droop_snoot]

if you have a look out back you can see the blade climbing over the tailboom nicely with the wind on your right...

[Pandalet]

The general recommendation is with the nose just out of wind, so you get an easier landing, but the blades shouldn't flap into the tail boom.

[topendtorque]

I remember a thread here many years ago that came to the conclusion that you should have the wind in your left hip pocket when slowing the blades down in gusty conditions.

Not so sure about that. does that mean from your rear left quarter? If so then how do you start it if is a turbine, if you're out in the bush without ground handling gear, and the wind is still blowing?

My rule of thumb is, in stiff winds, always position the machine fifteen degrees or so off the wind, either way. One way the blades will be climbing over the tail boom, the other they will still be descending.

Its a topical question as one dude not far from here a few months ago did position his machine (an R22) on the edge of an escarpment facing directly into an approaching storm with wind gusts. Surprise surprise, as it was running down he got a dint in the tail-boom, but then flew home.

I am led to believe that his engineering team gave him the chewing he deserved.

Mind you, I would not have parked on top of the hill, where there is likely to be that nasty electrical stuff.

[TrT]

R22 Blades turning

As she has just started up before the clutch switch is even on or is engaged the blades are turning.. Good or bad? I understand if the belts are new that can occur.

[Hedge36]

Not a huge deal.

[GOT]

As she has just started up before the clutch switch is even on or is engaged the blades are turning.. Good or bad? I understand if the belts are new that can occur.

If the machine is new it's common that the drive belts are quite tight at least the first 50 hours. This is nothing to worry about.

GOT

[muffin]

Mine used to do that. It is just a simple adjustment to cure it.

[Hughesy]

R22's

Seems like these things always drop out of the sky.
Yes they have trained alot of pilots....but they have also killed alot of them!
Isn't it time to look at getting rid of the peices of.......

Preparing to duck from incoming.....but hopefully not robbo bits!

[Rotorhead1026]

Flame bait ... don't bite.