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Re: [Paparazzi-devel] Fixed-wing aircraft airspeed control without an ai

From: Helge Walle
Subject: Re: [Paparazzi-devel] Fixed-wing aircraft airspeed control without an airspeed sensor
Date: Thu, 21 Aug 2014 13:59:23 +0200


I have found that my two Paparazzi planes, Twinstar 2 and Skywalker, fly very well in "normal" wind conditions without an airspeed sensor. By "normal" I mean winds comfortable for normal RC flying.

I have however an Eagle Tree airspeed sensor in my Skywalker, used only for measurements. I find I can do some interesting analysis when I compare the speeds reported from the airspeed sensor and the GPS.


2014-08-21 13:37 GMT+02:00 Reto Büttner <address@hidden>:
Hi wertrrte
This is easily possible. The Paparazzi throttle control has a setpoint (horizontal flight at cruise speed) and adjusts throttle for height control. This method leads to nicely constant airspeed, once tuned well. We flew a lot and also very demanding flights without an airspeed sensor with perfect results. We weren't even able to optimize flight performance using an airspeed sensor. For simplicity and reliabilty I therefore even recommend to do without an airspeed sensor, but rather to invest some time in good tuning.
Cheers, Reto

2014-08-21 12:30 GMT+02:00 wertrrte <address@hidden>:

My plane doesn't have an airspeed sensor and I hope it can keep its altitude
even in strong wind so it will not crash easily and thus more reliable.Is it
possible to achieve this?


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