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[Paparazzi-devel] Tiny on larger glow/gas aircraft

From: Daniel Kauter
Subject: [Paparazzi-devel] Tiny on larger glow/gas aircraft
Date: Fri, 8 Feb 2008 11:44:51 +1000 (EST)

Hi everyone,

Has anyone tried using paparazzi with gas or glow engined planes, and if so, 
was it a success? If not, could anyone speculate on whether it would?

My concerns with it relate to the IR sensors:

1. Would the hot exhaust (which contains oils and residues) significantly 
affect the angle measurements? There is likely to be hot exhaust behind, and to 
one side of the aircraft, and possibly even below. The best strategy I can see 
to mitigate this is to mount the x,y sensor high on the tail.

2. Would the hot engine at the front of the plane affect the angle measurements 
significantly? Hopefully the fuselage will shield most of the engine from the 
IR sensors fov, but probably not completely.

3. Would hot oil and exhaust damage the IR sensors? Being on the outside of the 
aircraft, I imagine it would be hard to ensure they are safe from this.

My only other concern is with regard to larger aircraft. Obviously the 5V 
supply won't be capable of supplying 5 or 6 large servos, so I am planning to 
supply them from a 6.0V NiCd. Does anyone know if the servos will have a 
problem detecting their 5V PWM signals from the Tiny when their supply voltage 
is higher?

Thanks in advance to those who respond. Your input may save me a lot of time 
pursueing something that might not work!

Also, thanks to everyone who has helped create paparazzi. My team and I enjoyed 
using it to build our MAV last year. I'm hoping we can continue using it this 
year with a larger aircraft for this:

Maybe paparazzi can get another title under its belt!



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