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The Home of Photos in Dunnunda! Mk II
Join Date: Jun 2010
Location: TinselTown
Age: 45
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gonkulators
Creampuff - I've often wondered how those gonkulators work. Seeing as there is no torque gauges on little recips what do they base % power off. Is it a very general approximation combination of MP/RPM/FF? Explains the inaccuracy when operating LOP if the gonk factor was set for ROP operations
When you live....
Thanks Trent - my standby altimeter stays on 1013 until the TL but given that 90% of the arrivals into Essendon start with "when ready, descend to 9000, QNH xxx" I'd rather not bust my clearance by being momentarily distracted when passing through 10,000 and having the cleared altitude warning go off as I pass through it (especially given the range of QNHs seen recently). So my practice is to set cleared ALT and QNH when clearance received so it's not lost or forgotten in the heat of the moment.
The gonkulators - yes - not really sure of the science and my bad that I just take what it says as gospel (and an irrelevance - power settings of 2200rpm/24.5" and fuel flow adjusted to control the TITs). I've been assured that the Auracle algorithim is pretty accurate but I don't know how it copes with LOP. Plus my fuel sensors are either no good or too sensitive as FF jumps around a bit during flight - 43.5 seemed about the average. Wouldn't need to be much higher to get the right % for 290HP (MCP) engines. The totaliser is usually pretty much right on the money.
The gonkulators - yes - not really sure of the science and my bad that I just take what it says as gospel (and an irrelevance - power settings of 2200rpm/24.5" and fuel flow adjusted to control the TITs). I've been assured that the Auracle algorithim is pretty accurate but I don't know how it copes with LOP. Plus my fuel sensors are either no good or too sensitive as FF jumps around a bit during flight - 43.5 seemed about the average. Wouldn't need to be much higher to get the right % for 290HP (MCP) engines. The totaliser is usually pretty much right on the money.
Join Date: Jun 2010
Location: TinselTown
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I reckon that's what it is, the auracle gets screwy LOP. Must base the calculation from MP/RPM combination.
From the 602P performance data 193hp per side gives 220ktas at FL200 so 202ktas on 156hp seems to fit.
At ease everybody, I think we've solved this one.
sorry i got no pictured to post
From the 602P performance data 193hp per side gives 220ktas at FL200 so 202ktas on 156hp seems to fit.
At ease everybody, I think we've solved this one.
sorry i got no pictured to post
Last edited by Lumps; 29th Jun 2014 at 08:37. Reason: nup
There you go, our SOPs have it the other way round
Area on standby / EFIS
STD on PFD till approaching FL110
Lots of ways to skin a cat eh
Area on standby / EFIS
STD on PFD till approaching FL110
Lots of ways to skin a cat eh
Last edited by megle2; 29th Jun 2014 at 08:07. Reason: Spelling as usual
lotsa good oil here for the bigger boys . .. . . not so much the paddock bashing wee J3 sort of aviator of course. . .. BUT . . only posting to
give Under Radar a mild serve for his use of a horrible Americanism
. . when he says " MY BAD "
give Under Radar a mild serve for his use of a horrible Americanism
. . when he says " MY BAD "
and an irrelevance
%power is simply a number gonkulated from other numbers. You already know the other numbers. The 'art' is to know their implications...
(My apologies for the thread drift. Thread drift: Off.)
Ah, de Havilland!
Join Date: Dec 2006
Location: australia
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Everyone knows if you own a black car it is hotter in summer and doesn't hide the dirt very well. Hate to see how many sponges and car wash Air New Zooland and going through.
Nice pics everyone.
Nice pics everyone.