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-   -   Nimrod cockpit gauge (https://www.pprune.org/military-aviation/445639-nimrod-cockpit-gauge.html)

Martyn Northall 14th Mar 2011 16:44

Nimrod cockpit gauge
 
Hi,

What does this gauge, mounted centrally above the engine instruments, indicate/display?

http://i7.photobucket.com/albums/y28...mar/Nimrod.jpg

Thanks
Martyn

isaneng 14th Mar 2011 16:49

Engine rpm synchroniser, with #2 as the master reference signal?

hoodie 14th Mar 2011 16:55

That's what they want you to think. It's actually the speed of the dispenser pumps in the chemtrail tanks.

Miles Magister 14th Mar 2011 17:32

isaeng is correct.

No 2 was the master engine and the pilot should fine tune the other throttles to stop the fans moving.

moggiee 14th Mar 2011 17:47

Yes it is. The same gauge is fitted to the VC10 on the FE station.

TheChitterneFlyer 14th Mar 2011 17:52


No 2 was the master engine and the pilot should fine tune the other throttles to stop the fans moving.
To STOP the fans from moving? That should work well then!

thunderbird7 14th Mar 2011 19:22

Isn't that another 'British aeroplane' type feature ( like the hyd levers in the roof? ) I think the dreaded T-word may have had the same gauge.

Incidentally, the P2 fiddled around with the throttles, the P1 looked smuggly on and the Eng tutted and moaned at the P2 at his failure to get them in any semblance of order :ok:

getsometimein 14th Mar 2011 20:10

It's a gauge to remind pilots what "fast" is, and what "slow" is...

Just to its right there was one for "big" and "small"...

Rigga 14th Mar 2011 20:24

and there's another one that says:

Port (Left) - Starboard (the other way)

Duncan D'Sorderlee 14th Mar 2011 20:33

Martin,

When operating on 4 engines, it helped to achieve symmetric fuel burn. T'bird7 is correct with his description; although that was not necessarily confined to setting the P2 setting the RPM!

Duncs:ok:

ponks 14th Mar 2011 20:45

On VC10's, the throttles are finely set by the Air Eng (in cruise). If the engines are now all rotating at the same speed, then temps, pressures, fuel burn, P7 Thrust etc etc, should all be the same. If it doesn't the it can be used as an indication of a future problem.:hmm:

Trainspotter 14th Mar 2011 21:56

Synchro
 
Of course it all worked really well unless an unscrupulous Flight Eng like K## W##b turned on the engine anti-ice and then it was worth cock-all!!!

Happy days......:D

betty swallox 15th Mar 2011 10:24

Duncs,
Agree strongly. Nice to have a sensible and correct post on the Forum. For once!

The Curator 15th Mar 2011 11:29

Isaneng..........Absolutely correct.
My, how I used to while away the hours in the cruise watching the Student Pilots attempting to 'synch' the engines.
And then put on the engine anti-icing........:rolleyes:

Edited for spooling errors.......

NutLoose 15th Mar 2011 13:06


On VC10's, the throttles are finely set by the Air Eng (in cruise). If the engines are now all rotating at the same speed, then temps, pressures, fuel burn, P7 Thrust etc etc, should all be the same. If it doesn't the it can be used as an indication of a future problem.http://images.ibsrv.net/ibsrv/res/sr...lies/yeees.gif
Don't forget the trend logs ;)

Secretsooty 16th Mar 2011 18:54

Another issue was the fact that the synchrometer was fed by the HPRPM Tacho-Genny, so the pilots would line up all their rpm's to stabilise the synchrometer indicators, then the eng would start fiddling with the throttles to line up his LP rpm's on his gauges, knocking the synchrometers out again, hahaha.
The same was true for "throttle stagger" snags - eng would line them up on LPRPM, we would ground run and line up on HPRPM (as per the AP) and pronounce it No Fault Found, lol.

hairy eng 16th Mar 2011 20:44

Nimrod Gauge
 
Sorry to be picky but the Synchroscope was fed from the engine LPRPM gauges. The reason being that during flight conditions the LPRPM was the only true measure of engine power being produced.

OilCan 16th Mar 2011 22:21


Sorry to be picky but the Synchroscope was fed from the engine LPRPM gauges.
:ok: (LP tacho-genny)

Secretsooty; thats why you were able to pronounce "No Fault Found", lol. :oh:

[email protected] 17th Mar 2011 06:46

Don't know how you boys managed to contain yourselves having so much fun in the cockpit:rolleyes:

RODF3 17th Mar 2011 11:48


What does this gauge, mounted centrally above the engine instruments, indicate/display?
Shouldn't this read ' what did this gauge USED to display?'


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