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sander
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makeflyeasy commented on sander's blog post New VTOL UAV for Utilities, Wildlife and Disaster Inspection
"What a great plane!"
May 28

100KM
sander commented on sander's blog post The problem with airspeed sensors
"Hi Alex, Sorry it took a while to respond, but lets go: > not sure about the "new"-ness of this featureI never claimed it was new. > I don't think your unit is IP64 rated either, even without an AS sensor, so let us…"
May 4

100KM
sander commented on sander's blog post The problem with airspeed sensors
"Hi Tom, I never suggested this was anything new on PX4. It's been available for almost 2 years now."
May 4

Developer
Tom Pittenger commented on sander's blog post The problem with airspeed sensors
"Nice to hear PX4 finally has an airspeed estimate!"
May 4
Pompecukor commented on sander's blog post The problem with airspeed sensors
"Hi Sander, Long time no speak. Here is my take on you article. As you will see I do not agree with all of it. First of all. Ardupilot (Arduplane) code has a working synthetic airspeed sensor feature for many many years. It works well. We tested it…"
May 4

100KM
sander commented on sander's blog post The problem with airspeed sensors
"No, that would require an impossible level of fine tuning on your actuators"
Apr 9
Andreas Gazis commented on sander's blog post The problem with airspeed sensors
"Aha, so you scale actuators according to airspeed. In that case, would it not be possible to work the other way round and calculate airspeed based on response to actuator changes? This only requires INS and servo output."
Apr 9

100KM
sander commented on sander's blog post The problem with airspeed sensors
"@andreas  You need to distinguish between 2 processes: 1. Keeping the vehicle flying stable2. Estimating airspeed Process 1 only uses estimated airspeed to scale actuator outputs (elevons). The transient phase is not a real concern there. It…"
Apr 8
Andreas Gazis commented on sander's blog post The problem with airspeed sensors
"So, for given vehicle in stable flight (given air density, temp which you mention through baro, temp sensors), thrust + pitch should give you airspeed is that what's at the heart of your approach? My question is, what happens at transient…"
Apr 8

Profile Information

Please tell us a bit about your UAV interest
I build drones
Hometown:
Amstelveen

Sander's Blog

The problem with airspeed sensors

Posted on April 2, 2019 at 5:30am 28 Comments

Airspeed sensors have been a major concern for both manned, and unmanned aviation alike. Yet almost every fixed wing or VTOL vehicle is dependent on it. So what is wrong with these sensors and why are they used?

How an airspeed sensor should work

A standard airspeed sensors consists of a pitot tube, a temperature sensor and 2 pressure sensors. The pitot tube has 2 ports (holes), one at the tip (like an injection needle) which is called the dynamic port, and…

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New VTOL UAV for Utilities, Wildlife and Disaster Inspection

Posted on March 18, 2019 at 2:42am 1 Comment

Vertical Technologies launches the DeltaQuad Pro #INSPECT

To meet the growing demand for dedicated solutions in a wide range of drone enabled inspection tasks, Vertical Technologies have expanded their autonomous DeltaQuad Pro VTOL range with the DeltaQuad…

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Vertical Technologies DeltaQuad maps uninhabited island

Posted on November 3, 2018 at 8:23pm 0 Comments

At the end of this new DeltaQuad compilation video, you can see the 3D rendering that was created from a survey mission of a dutch peninsula. The mission was flown using a DeltaQuad Pro #MAP carrying a Sony A7R3 with a 35mm lens.…

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Vertical Technologies launches the DeltaQuad Pro #VIEW VTOL surveillance UAV

Posted on October 28, 2018 at 1:24pm 0 Comments

After the successful launch of the DeltaQuad Pro, and DeltaQuad Pro #MAP, Vertical Technologies has now launched the DeltaQuad Pro #VIEW; A long range surveillance drone based on the DeltaQuad hybrid VTOL fixed wing UAV.

The…

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Comment Wall (2 comments)

At 6:12pm on April 13, 2016, opiq said…

Hi..

I am interested in VTOL setup, I am a newbie....

How to create additional flight modes for Quadplane in Pixhawk..could you give me some reference?

Thanks in advance

opiq

At 11:33pm on April 13, 2016,
100KM
sander
said…
Hi,

Have a look at http://px4.io/docs/quadranger-vtol/ that is a build i did that explains everything and allows you to replicate

-sander

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