Cozy Performance Specs

[mlefebvre]

I have been playing with a flight plan software package and I wanted to program a standard COZY MkIV into the software to model some flight plans. Could you guys provide me with the performance specs of the cozy AT GROSS for:

 

Rate of Climb (Ft/Min):

Indicated Climb Speed (Kts):

Climb Fuel Burn Rate (Gal/Hr):

 

Default Cruise Altitude (Ft):

Cruise TAS (Kts):

Cruise Fuel Burn Rate (Gal/Hr):

 

Rate of Descent (Ft/Min):

Indicated Descent Speed (Kts):

Descent Fuel Brun Rate (Gal/Hr):

[Marc Zeitlin]

Originally posted by mlefebvre

Could you guys provide me with the performance specs of the cozy AT GROSS for:

.....

 

Was the information at:

 

http://www.cozybuilders.org/performance/

 

insufficient?

[mlefebvre]

Originally posted by Marc Zeitlin

Was the information at:

 

http://www.cozybuilders.org/performance/

 

insufficient?

 

 

It provided some of the data points, but not all. I could not ascertain from your data:

 

Climb Fuel Burn Rate (gal/hr):

Rate of Descent (Ft/Min):

Descent Fuel Burn Rate (gal/hr):

 

unless this can be extrapolated from your data points, I wasnt able to determine these at gross weight.

 

 

Marc

[Marc Zeitlin]

Originally posted by mlefebvre

I could not ascertain from your data:

 

Nat's data - not mine. Those are scans of the standard COZY Owners Manual.

 

Here's what I use:

 

Climb Fuel Burn Rate (gal/hr): 13 gal/hr at full throttle (average - it's a bit higher at low altitudes and full rich, and lower at high DA's and leaned out)

 

Rate of Descent (Ft/Min): Highly personal - descents can be anything from closed throttle slow descents to full throttle high speed dives, and anything in between. I use 500 - 700 ft/min for cruise descents at 220 IAS in smooth air, and 180 IAS if it's a bit bumpy.

 

Descent Fuel Burn Rate (gal/hr): See above. I don't have a fuel flow meter, so I can't tell you exactly, but I'm gonna guess anywhere from 6-9 gal/hr.

 

Since you spend so little time in a COZY climbing and descending (in comparison to a spamcan), the fuel flow rates in those modes don't make much of a difference in total fuel usage on reasonably long cross-countries.

 

As an aside, you might want to ask this question on either the COZY or canard_aviators mailing lists, since there are a lot more people flying COZY's on each of them. It seems to be just me and Norm Muzzy around here......