Go Back  PPRuNe Forums > PPRuNe Worldwide > The Pacific: General Aviation & Questions
Reload this Page >

The Home of Photos in Dunnunda! Mk II

The Pacific: General Aviation & Questions The place for students, instructors and charter guys in Oz, NZ and the rest of Oceania.
    Hide Wikipost
Old 16th Jun 2016, 15:49   -   Wikipost
PPRuNe Forums Thread Wiki: The Home of Photos in Dunnunda! Mk II
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
Last edit by: tail wheel
This thread is a continuation of the original Photos thread commenced in 2006:

The Home of Photos in Dunnunda! Mk I

Print Wikipost

The Home of Photos in Dunnunda! Mk II

Old 28th Jun 2014, 13:47
  #1061 (permalink)  
When you live....
 
Join Date: Sep 2004
Location: 0.0221 DME Keyboard
Posts: 933
Whats the aircraft type UTR? That looks damn satisfying.
601P
601P
601P

(needed 10 characters)
UnderneathTheRadar is offline  
Old 28th Jun 2014, 20:08
  #1062 (permalink)  

Victim of a bored god

Moderator
Thread Starter
 
Join Date: Jan 1996
Location: Utopia
Posts: 6,748
10? .........................

tail wheel is offline  
Old 28th Jun 2014, 22:43
  #1063 (permalink)  
When you live....
 
Join Date: Sep 2004
Location: 0.0221 DME Keyboard
Posts: 933
ok then:

601P
601P
60

UnderneathTheRadar is offline  
Old 28th Jun 2014, 23:12
  #1064 (permalink)  
 
Join Date: Aug 2002
Location: Further away
Posts: 870
Looks like you've set area qnh 1003 a bit early
megle2 is offline  
Old 28th Jun 2014, 23:44
  #1065 (permalink)  
 
Join Date: May 2009
Location: Australia, maybe
Posts: 557
Megle2. Not according to AIP 1.7 2.1.4, he hasn't.
Set QNH anytime when on descent to an altitude before passing the 'Transition Level'.

Although it would make it a bit iffy if asked to report "level 'leaving'". ;-)

601P! I'd like one of them for christmas. Please Santa.
Trent 972 is offline  
Old 29th Jun 2014, 03:58
  #1066 (permalink)  
 
Join Date: Jun 2010
Location: TinselTown
Age: 42
Posts: 191
something for nothing

Jabba - Lean of Peak of course..... (59% power/ 43L/hr per side)
So which one was it - 59% or 43 L/hr?

11.35 gph x 13.75 = 156hp

Either you've got 265hp engines or you were cruising at 45% power on 350hp engines, or the FF k-factor has been sneakily reset on you...

Just curious, no gotcha intended!

-- added -- do the 290hp aerostars have a MCP rating of 265hp perhaps?

Last edited by Lumps; 29th Jun 2014 at 04:01. Reason: thought bubble
Lumps is offline  
Old 29th Jun 2014, 06:19
  #1067 (permalink)  
 
Join Date: Nov 2000
Location: Salt Lake City Utah
Posts: 3,052
Perhaps the explanation is the notoriously inaccurate algorithms in those %power gonkulators?
Creampuff is offline  
Old 29th Jun 2014, 07:18
  #1068 (permalink)  
 
Join Date: Jun 2010
Location: TinselTown
Age: 42
Posts: 191
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
Lumps is offline  
Old 29th Jun 2014, 07:31
  #1069 (permalink)  
When you live....
 
Join Date: Sep 2004
Location: 0.0221 DME Keyboard
Posts: 933
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.
UnderneathTheRadar is offline  
Old 29th Jun 2014, 07:53
  #1070 (permalink)  
 
Join Date: Jun 2010
Location: TinselTown
Age: 42
Posts: 191
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

Last edited by Lumps; 29th Jun 2014 at 08:37. Reason: nup
Lumps is offline  
Old 29th Jun 2014, 08:05
  #1071 (permalink)  
 
Join Date: Aug 2002
Location: Further away
Posts: 870
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

Last edited by megle2; 29th Jun 2014 at 08:07. Reason: Spelling as usual
megle2 is offline  
Old 29th Jun 2014, 08:24
  #1072 (permalink)  
 
Join Date: Jun 2005
Location: THE BLUEBIRD CAFE
Posts: 59
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 "
Fantome is offline  
Old 29th Jun 2014, 08:30
  #1073 (permalink)  
 
Join Date: Nov 2000
Location: Salt Lake City Utah
Posts: 3,052
and an irrelevance
That's the key point.

%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.)
Creampuff is offline  
Old 29th Jun 2014, 09:54
  #1074 (permalink)  
 
Join Date: Jul 2007
Location: Australia
Age: 71
Posts: 1,372
Actually, I have always been interested in the % power figure. How is it actually arrived at for any given engine, mine for instance. IO360.
Arnold E is offline  
Old 6th Jul 2014, 02:10
  #1075 (permalink)  
 
Join Date: Jun 2007
Location: Sale, VIC, AUS
Age: 47
Posts: 25
shadowoneau is offline  
Old 6th Jul 2014, 13:33
  #1076 (permalink)  
 
Join Date: Mar 2008
Location: Richmond NSW
Posts: 1,297
Shadowoneau, Geelong Gliding Club's ASK 13 at Bacchus Marsh?

That sailplane must have just a few hours up on it, these days..

It's about the same age as you!
gerry111 is offline  
Old 12th Jul 2014, 09:46
  #1077 (permalink)  
 
Join Date: Mar 2012
Location: GPS Signal Lost
Posts: 164
TOUCH-AND-GO is offline  
Old 12th Jul 2014, 09:49
  #1078 (permalink)  
 
Join Date: Mar 2012
Location: GPS Signal Lost
Posts: 164
TOUCH-AND-GO is offline  
Old 12th Jul 2014, 21:01
  #1079 (permalink)  
 
Join Date: Nov 2009
Location: SE Qld, Australia
Age: 74
Posts: 1,033
Ah, de Havilland!
Dora-9 is offline  
Old 19th Jul 2014, 03:50
  #1080 (permalink)  
 
Join Date: Jun 2007
Location: Sale, VIC, AUS
Age: 47
Posts: 25
Yes Gerry, it is Geelong's AS-K13 at YBSS. IIRC it has about 15000hrs on it over 40000 landings. And it is slightly (ahem) older than me!
shadowoneau is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.