LNC4 PROFILE

Submitted by Anonymous on

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From: Carl Scheid <carlscheid [at] att.net>
Sender: <marv [at] lancaironline.net>
Subject: LNC4 PROFILE
Date: Tue, 07 Oct 2014 08:56:19 -0400
To: <lml [at] lancaironline.net>

A profile for an LIVP that might be used in flight
planning software was determined from a spread sheet performance model. The
following profile was based on the indicated conditions:

               
FLIGHT CONDITIONS - TSIO 550 G,
 LIVP, 3100 LB

CLIMB  
               
90% POWER       AT 145
KIAS

CRUISE                
22000 ISA FT       AT 165
KIAS

DESCEND            
1000 FT/MIN     
AT 165 KIAS

               
FLIGHT LOG PROFILE

                               
CLIMB                  
1066 FT/MIN     
26.9 GPH             
176 KTAS

                               
CRUISE                
75% POWER       16.0
GPH             
234 KTAS

                               
DESCEND            
1000 FT/MIN     
9.3
GPH               
206 KTAS

 

Since my LIV has an IO 550 G, I have no way to check the
flight log fuel burn and flight time. I am interested in hearing about any LIVP
profiles that do an acceptable job of predicting time and fuel burn.

LNC4 PROFILE

Submitted by Anonymous on

From: Colyn Case <colyncase [at] earthlink.net>
Subject: Re: [LML] LNC4 PROFILE
Date: Tue, 7 Oct 2014 21:10:58 -0400
To: Lancair Mailing List <lml [at] lancaironline.net>
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Undecoded Message

On a IVP 90% power climb would be over 40gph.

I don't know why you would use 90% power though.   The fuel pump provides extra fuel at 100% and max rpm gives you effectively later timing, which means lower pressures in the cylinders.
LOP cruise at 31" is closer to 18gph

On Oct 7, 2014, at 8:56 AM, Carl Scheid wrote:


A profile for an LIVP that might be used in flight
planning software was determined from a spread sheet performance model. The
following profile was based on the indicated conditions:

               
FLIGHT CONDITIONS - TSIO 550 G,
 LIVP, 3100 LB
CLIMB  
               
90% POWER       AT 145
KIAS
CRUISE                
22000 ISA FT       AT 165
KIAS
DESCEND            
1000 FT/MIN     
AT 165 KIAS
               
FLIGHT LOG PROFILE
                               
CLIMB                  
1066 FT/MIN     
26.9 GPH             
176 KTAS
                               
CRUISE                
75% POWER       16.0
GPH             
234 KTAS
                               
DESCEND            
1000 FT/MIN     
9.3
GPH               
206 KTAS

 

Since my LIV has an IO 550 G, I have no way to check the
flight log fuel burn and flight time. I am interested in hearing about any LIVP
profiles that do an acceptable job of predicting time and fuel burn.