"Damn you are absolutely right, sorry for that...However why should the pressure rise? Is the irradiation causing the air to get denser?"
Philippe Petit's Discussions
Kml log construction under APM planner broken
Started this discussion. Last reply by Philippe Petit Jun 23, 2011. 2 Replies 0 Likes
Hi all,today i had my first really successful flight with the APM under Auto mode, and it worked pretty great!I used APM 2.10 (as the logging function works correctly there), when i tried to view the…Continue
Tags: broken, kml, reconstruction, logs, planner
FBW max bank angle problem
Started this discussion. Last reply by Philippe Petit Jul 1, 2011. 4 Replies 0 Likes
Hello everyone, I have a weird problem with the FBW mode: The fly-by-wire mode works fine for level flight (so does stabilizing), but when i move the stick to one side, the plane starts turning, and…Continue
Log File issue with 2.12
Started this discussion. Last reply by Philippe Petit Jun 9, 2011. 7 Replies 0 Likes
Hello Everyone, i just experienced a strange logfile issue. I uploaded recently APM 2.12 onto my APM. Flying worked just perfectly (FBW, auto etc.). However at home i tried to readout the logfile,…Continue
Airspeed Sensor with Atmega 2560, low Voltage
Started this discussion. Last reply by Don Brooks May 5, 2011. 1 Reply 0 Likes
Hello guys,today I tried out the airspeed sensor with my new Atmega 2560 board. I used the MPXV7002Dp airspeed sensor. I wanted to test it, in test mode, but it only displayed "airspeed: disabled". I…Continue
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Latest Activity
Philippe Petit commented on Manfred Dickgiesser's blog post The mysterious AltHold problem .... solvedPhilippe Petit commented on Manfred Dickgiesser's blog post The mysterious AltHold problem .... solved"When the sun shines at the barometer, the detected pressure rises and therefore the helicopter thinks it is too high. Therefore it commands a loss in altitude to regain the "correct" altitude (which is of course 5m lower due to sunshine).…"
Philippe Petit commented on tristan price's blog post Freezing fog grounds my hexa in less than a minute"So does that antiicing stuff stick on the propeller even though the propeller spins at a rather high speed.Actually I am a bit baffled that the water sticks in the first place. Should the centrifugal force carry it away before it could freeze?"
Philippe Petit commented on tristan price's blog post Freezing fog grounds my hexa in less than a minute"Hi,
I think a heated cabine might not be the solution. As the props are relatively thin, they get cold quite quickly, therefore even though you heat them up, they will cool down in the first few seconds of your flight.
Perhaps you can try to apply…"
Philippe Petit commented on wayne garris's blog post techpod EPO foam"Hey wayne I always wondered, would you share the aerodynamic output of XFLR5 too?
Thank you
phil"
Philippe Petit commented on Bo Firetag's blog post MALE VTOL Flight Testing - Day 1"Hey,
how did you plan the transition between fixed wing and rotary flight mode? Is that an issue? "
Philippe Petit commented on wayne garris's blog post Proposal to merge XFLR5 and PX4"Hello wayne,
this is indeed possible. Given a model like you proposed (therefore having a aerodynamic model), it would be very well possible to improve the performance of the controller.
In my opinion there are several possible ways to improve…"
Philippe Petit commented on Mark's blog post Graphite 2E onboard GoPro3 footage - next Ardu Pilot"very smooth flying!"
Philippe Petit commented on Chris Anderson's blog post APM-based 'Burrito Bomber""How accurate is the parachute delivery? Are you accounting for Wind? "
Philippe Petit commented on Darrell Burkey's blog post Motorcycle Gyro Cam Using APM 2.5"Very nice application actually!"
Philippe Petit commented on Chris Anderson's blog post $1250 RTF UAV for autonomous GoPro filming"How is it even possible that they only get 5 minutes endurance? Does this thing run on a citron battery?"
Philippe Petit commented on Andrew Tridgell's blog post CanberraUAV Outback Challenge 2012 debrief"truly inspiring! Very good work, hope to see you win next time!!!"
Philippe Petit commented on Jack Crossfire's blog post Vision systems, then & now"Hey,
sorry to ask, but are you actually tracking the one tiny LED on the quadrotor? How do you set up the control loop for Position control, or are you only controlling height?
phil"
Philippe Petit commented on elad o's blog post Maryland Student Hovers 8 Feet High in Human-Powered Helicopter, Smashing Previous Records"No, the stability of the system actually does not depend where you place your CG in reference to your thrust generation. "
Philippe Petit commented on trappy's blog post New TBS Wing - Development sessions in Thailand"Wow, best video so far! Whoever is editing your shots is a genius! The whole thing really gets professional, wonder how long it takes until we have to pay to view these videos... However wonderful work, really love your videos! Will you reveal some…"
Philippe Petit commented on elad o's blog post Maryland Student Hovers 8 Feet High in Human-Powered Helicopter, Smashing Previous Records"Randy: What they are trying to do with their large props is to reduce the induced drag of the propellers. Also they tried to maximize the ground effect by mounting the propellers as far down as possible (which is why the propellers are so freakingly…"
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- I am a Mechanical Engineer Student in Zurich
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