Additional Failure Request: Tail Rotor Drive Shaft

[Flamin_Squirrel]

I was looking though the failures and noticed that there was one for the main drive shaft, but not for the tail rotor. I was wondering if it might be possible to include this, to allow for practice tail rotor failures?

 

As a side note, I noticed that there are failure modes for main gearbox chip and tail rotor gearbox chip. Do these failures result in actual damage, or just the illumination of the master caution and respective warning lights?

[26-J39]

Good one, there should be an option for tail rotor failure for sure.

AFAIK the chip sensors are just like 2 magnets with a small gap between them inside the transmission case, when enough metal fragments or particles cling on and bridge the gap it lights the caution panel. So a chip failure is just a caution light failure I believe.

[Flamin_Squirrel]

Good one, there should be an option for tail rotor failure for sure.

AFAIK the chip sensors are just like 2 magnets with a small gap between them inside the transmission case, when enough metal fragments or particles cling on and bridge the gap it lights the caution panel. So a chip failure is just a caution light failure I believe.

 

Yeah I was just wondering if that wear/damage that would cause the chip detector to light would eventually be followed by more serious damage.

[b00ce]

Good one, there should be an option for tail rotor failure for sure.

AFAIK the chip sensors are just like 2 magnets with a small gap between them inside the transmission case, when enough metal fragments or particles cling on and bridge the gap it lights the caution panel. So a chip failure is just a caution light failure I believe.

Correct, chip detectors are pretty simple. For a simulation, they're even less complex. :smilewink:

[26-J39]

Yeah I was just wondering if that wear/damage that would cause the chip detector to light would eventually be followed by more serious damage.

 

I would say it's a fairly serious matter, metal fragments in transmission oil will only lead to one thing. ;)

[Flamin_Squirrel]

I would say it's a fairly serious matter, metal fragments in transmission oil will only lead to one thing. ;)

 

In the real thing, of course. But do chips in the tail rotor gear box lead to it falling in this sim? That's what I was getting at.

[26-J39]

Ok, just tried a set up failure, the caution light comes on. Few around for a good 10 Min afterwards with no problems. :noexpression:

[b00ce]

Ok, just tried a set up failure, the caution light comes on. Few around for a good 10 Min afterwards with no problems. :noexpression:

Unsurprising, the gearboxes are VERY tolerant (The gearboxes on the UH60 can run for 30 minutes without any oil) and the chip detectors don't require much to trip. In essence its a check engine light for your gearbox.:thumbup:

[26-J39]

Unsurprising, the gearboxes are VERY tolerant (The gearboxes on the UH60 can run for 30 minutes without any oil) and the chip detectors don't require much to trip. In essence its a check engine light for your gearbox.:thumbup:

 

Yep, just tryin to figure out if the DCS failure leads to tail rotor failure or is just a sensor failure.

 

Edit: Thinking, I guess it's not just a sensor failure cause then the caution light woudln't light. Not much point there. I'm tippin the chip failure in tail rotor will eventually over time stall the tail rotor.

Edited August 23, 2013 by 26-J39

[Buznee]

Agreed that this should be a failure. Including actual drive shaft failure as well tail rotor control failure. For the drive shaft failure the tail rotor would no longer be connected to the rest of the drive system and would no longer receive power. You would still be able to control the pitch of the tail blades with the pedals but there would be no tail rotor effectiveness since the tail rotor is not being turned to produce thrust. The control failure would be where the pilot no longer had tail rotor pitch control function even though the tail rotor is still connected the drive system. Another variation would be to have a tail rotor blade failure, the blade would effectively be shot off throwing the tail rotor out of balance or sheering the tail rotor off completely.

[b00ce]

I just tested it, oddly enough there is a failure for the main drive shaft (Going from the engine to the Main XMSN) but not the T/R drive shaft. There should be several failure points for the tail rotor/drive system (T/R Drive shaft, Intermediate GBX and the T/R GBX). I have yet to see a failure on the Tail Rotor that isn't the T/R blades shredding on something. :music_whistling:

 

 

The T/R flight controls are a little tricky, however, as there are only two ~1/4in cables running down the right side of the tailboom. They would be incredibly hard to take out, BUT there is no back up fixed pitch system (Like in the UH60) that I could find in any of the manuals (-10 or -23), so if either of those cables break bad things will happen. I am curious how well the cambered fairing works without any anti-torque from the T/R in forward flight, though.

 

(It isn't a UH1-H, but the principles are the same)