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  #1  
Old 06-14-2017, 10:52 AM
Norcalrv7 Norcalrv7 is offline
 
Join Date: Jan 2015
Location: McKinleyville CA
Posts: 188
Default Dog copilot

Rebel, my girlfriends bulldog is my hangar and flying buddy while she is at her real job.

19059045_1717377784946618_4219493661889592268_n by Caleb Lesher, on Flickr
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Flying RV-7A With SDS Electronic fuel injection
ATP CFI A&P
Based at EKA, Northern CA

Last edited by Norcalrv7 : 10-11-2017 at 11:09 PM.
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  #2  
Old 06-14-2017, 10:59 AM
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izzybear izzybear is offline
 
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Location: Dallas, TX
Posts: 301
Default Nice!

Made my day Caleb - thanks for posting! May you have many, many more flights together
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RV-8 N223TG (reserved)
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  #3  
Old 06-14-2017, 07:16 PM
eddieseve eddieseve is offline
 
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 582
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Love it.

Does the engine noise bother him?
How did you restrain him on the front seat?

Cheers
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  #4  
Old 06-15-2017, 02:04 AM
Capt Capt is offline
 
Join Date: Feb 2017
Location: Australia
Posts: 92
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That's one ugly dog. Hope yr G/F is better...lolol That's one thing I would never do, take a dog in a plane!
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  #5  
Old 06-15-2017, 03:15 AM
Hornet2008 Hornet2008 is offline
 
Join Date: Jul 2010
Location: NSW Australia
Posts: 230
Talking

Do you not need mixture with SDS electronic fuel injection? Just looks odd not having that little red knob. Opens up a brace of questions regarding leaning ect.
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RV-9 "Cloud tinnie"
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Then fuel flow test.
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  #6  
Old 06-15-2017, 03:21 AM
GThalheim GThalheim is offline
 
Join Date: May 2016
Location: SLC, UT for a few months
Posts: 9
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Quote:
Originally Posted by Norcalrv7 View Post
Rebel, my girlfriends bulldog is my hangar and flying buddy while she is at her real job.


I don't see a mixture control next to the prop and throttle controls. Does the EFI have a mass air flow sensor or something like that? Or does it use an algorithm?
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  #7  
Old 06-15-2017, 07:01 AM
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rmartingt rmartingt is offline
 
Join Date: Nov 2006
Location: Savannah, GA
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Quote:
Originally Posted by GThalheim View Post
I don't see a mixture control next to the prop and throttle controls. Does the EFI have a mass air flow sensor or something like that? Or does it use an algorithm?
That's the great wonderful thing about EFI--no need to futz about with a mixture knob like it's 1950

This system uses manifold pressure and RPM with a programmed fuel map. You can also schedule your ignition timing, and there's an optional "lean switch" function that leans out by a set amount and advances the timing.

There actually is a small mixture knob that you can use for initial tuning (dial in what you want, note the setting, and program it in), to lean manually if desired, or to compensate for an abnormal condition. But the great thing about it is that once it's set up, you shouldn't need to mess with leaning any more. For normal ops you'd just leave it at the halfway mark. In the pics it's right below the round programmer, next to the red-guarded switch in the center of the panel.

Ross is working on a closed-loop function that will adjust fuel delivery to meet a specified O2 sensor target. That's more challenging due to the need to handle sensor failure, and due to lead fouling of O2 sensors.
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  #8  
Old 06-15-2017, 07:52 AM
GThalheim GThalheim is offline
 
Join Date: May 2016
Location: SLC, UT for a few months
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Quote:
Originally Posted by rmartingt View Post
Ross is working on a closed-loop function that will adjust fuel delivery to meet a specified O2 sensor target. That's more challenging due to the need to handle sensor failure, and due to lead fouling of O2 sensors.
I'm sure there is an obvious reason for this (turbulent intake flow?, bad failure modes?) but wouldn't it be easier to do the air flow on the intake like they do in cars, rather than on the exhaust?
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  #9  
Old 06-15-2017, 07:59 AM
Flynjay Flynjay is offline
 
Join Date: Apr 2015
Location: Houston, TX
Posts: 5
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Cars measure the amount of O2 in the exhaust to determine proper mixture ratio. The intake manifold pressure is there to calculate the intake volume, required for calculating fuel injection volume matching to air intake volume.

Open loop, measures the intake parameters and uses a table to determine fuel injection volume. Closed-loop adds in the exhaust gas measurement to modify the table real-time.
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  #10  
Old 06-15-2017, 09:02 AM
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daddyman daddyman is offline
 
Join Date: Jan 2014
Location: Fredericksburg, Virginia
Posts: 198
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NorcalRV7,
Yes, but is she IFR rated?
Isn't colorblind an issue with dog copilots?

Daddyman
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