Versatility.....
 

For those interested here is another picture of an R22 with aerial spraying equipment fitted.

Whilst the payload is not huge it does allow access to small to meduim sites which may be harder to reach using ground based equipment.

The system is powered by the small engine on the RH tank and started by the loader/driver.
The throttle is placed in easy reach of the Pilot.

If I had been involved in naming it I'd have called it the 'Aerosol'! :)

http://www.helicopterpilotsguide.com/helinew.JPG

Good to see you back SPS.

Where's Pac Rotors?

Thank you. I'll write to PR.

Good Morning from the UK, the Green R22 should be named " Greenfly" for those outside UK airspace a greenfly is a nasty little plant eater and as the R22 spray machine is set up to deal with the same , well, could it be called anything else. :)

On a more serious note would not this config of R22 cause a severe upset in the lateral balance of this type, for with all the pilots weight on the right plus the spray pump and spray container also on the right, or does the pack contain ballast for the pax side. what wind limits and speed would this subject the Robby to?
Regards
PeterR-B

Should be called kermit (pukey green colour)

I think there is a tank on each side from what SPS wrote.

SPS:
thanks!

In this picture you cannot see the LH tank which has a 2 1/2" tube connecting it to the RH tank for the purpose of load equalisation.

Admittedly there is a small penalty to lateral C of G in that the pump is mounted on the same side as the Pilot but this is actually less of a disadvantage than placing the pump on the LH tank would be (depending on the weight of the Pilot).


The R22 hovers left skid low but with the Pilot in correct solo position (RHS) and the additional weight of the pump (with a longer arm of course) it will hover either skids level or maybe slightly right skid low. Depending on the Pilot's weight lateral C of G is within limits but it is important to check this.

The load itself has little impact on lateral C of G as it is of equal weight for both sides and placed below the vertical C of G position and on the longitudinal C of G position. Only vertical C of G of the heli is affected when the tanks are loaded, and in an advantageous manner as it becomes lower than normal(rollover is less likely).

If any problems are experienced during flight (eg. tanks not equalising, affecting lateral C of G or engine problems for the heli) then 'dump valves'(actually doors)
in the bottom of the tanks can be electrically or mechanically triggereed. The load may be jetissoned in one second from both tanks full.

It is wise to consider a reduction in VNE (not really an issue when spraying as speeds flown are much lower)and crosswind demonstrated conditions but this is also not an issue as conditions of far less than 17kt of wind are unsuitable for spray application.

It does not take very long to get used to flying it when loaded but getting the liquid applied to the correct places in the right amounts can be another matter altogether...!

But what we really want to know is; when you push forward on the cyclic with all this gear, does the helicopter fly truely forward???

Or do you have to put some lateral in :)

Bet Lu would know

[This message has been edited by Rotorbike (edited 17 March 2001).]

:)

I think it is more likely that the extra motor is connected to the transmission by a rubber band in order to lift the 5 gallon drum!

;)

To: Rotorbike

I don’t want to comment relative to adding or not adding lateral cyclic. However you might want to check my thread on “The infamous test”, also on Rotorheads.


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The Cat