Jlcortex's Blog (23)

Longest flight ever done with a multicopter drone

Hi all, 

We have been trying to achieve this goal for a long time. Two years ago we do a flight of 3 hours and 10 minutes with very early model, and our next goal was 4 hours but the guys of Skyfront published a record of 4 hours and 34 minutes. Now we are super happy to announce that we have surpassed this record!!!

We think it is…


Added by jlcortex on December 26, 2017 at 9:51am — 1 Comment

HYBRiX, 3 hours and 35 minutes flight time in hover

Hi all,

I would like to share our last experience. It is a flight of 3 hours and 35 minutes in hover. It is our longest flight so far, the flight is an internal test in which we did…


Added by jlcortex on December 13, 2017 at 3:30am — 8 Comments

Searching for heavy duty applications for HYBRiX20

Hi all!
It's been two years since we started with the HYBRiX development!!! Since some months ago we feel that development is finishing and that HYBRiX20 meets almost all the specifications that we said at the beginning.
There are a lot of challenges left to face but right now we have the feeling that HYBRiX20 is ready to do important…

Added by jlcortex on July 27, 2017 at 7:51am — 24 Comments

Quaternium HYBRiX at XPONENTIAL 2017

Hi Guys!

This year we will be at XPONENTIAL 2017 (May 8-11, Dallas). We have a small booth for startups. We are very excited because it is the first fair we attend in the United States.…


Added by jlcortex on March 22, 2017 at 10:17am — 4 Comments

Rugerized flight controller with pixhawk inside

We long ago decided that the controller of the Hybrix20 was going to be a Pixhawk. Some customers tell us that Pixhawk is not the right platform for our product but we would like to work on those few things that are missing to fit a drone of these features.

The first step has been to ruggerize the enclosure and the connectors. The second step is to adapt the…


Added by jlcortex on March 17, 2017 at 10:17am — 10 Comments

2 hours and 5 minutes test flight with maximum takeoff weight

It would probably be more spectacular a test flight of 4 hours but i was very interested in performing this test because it is very near to real use of Hybrix.20. 4 or 4.5 hours are possible for demonstration test but operational flight time is around 3 hours with light payload to 2 hours for heavy payload.

Lately many customers are telling…


Added by jlcortex on November 19, 2016 at 3:00pm — 32 Comments

Flight test of HYBRiX multicopter with a fully automatic mission using Tower APP

First flight tests of full automatic flight plan from take off to landing. We are using Tower. You can see the whole process on the video: flight plan generation, combustion engine start, drone arming from the tablet and mission launch.

I hope you like it!
Jose Luis Cortes

Added by jlcortex on July 3, 2016 at 2:03pm — 9 Comments

Updates on HYBRiX multi-rotor by Quaternium

It's been a while since I published the last update about HYBRiX. We are very excited about how the development is evolving and more than happy with customers response.

For the past few weeks we have been working on finishing our MVP. it has a new look, new frame, more fuel tank capacity, quick release arms...

There are 2 versions, one  with 25 inch…


Added by jlcortex on March 12, 2016 at 1:30pm — 15 Comments

3hr 10min endurance test with HYBRiX quadrotor by Quaternium

I want to share our last experience with HYBRiX, a lapse time of a 3hr and 10min endurance flight test. As far as I know it is the longest flight time for a hybrid fuel-electric drone, and I have to say it is not a lab test, but the same configuration we will start selling very soon. We are really excited about this! Please comments…


Added by jlcortex on December 14, 2015 at 11:30am — 35 Comments

Successful flight test of hybrid gas+electric VTOL UAV: HYBRiX

This is the crazy project that kept us busy lately at Quaternium: a hybrid electric+gas multirotor with range extender, inspired by Hybrid cars, such as BMWi3.

Our goal is to overcome the endurance limitations of an electric multicopter, while keeping the multirotor platform we are so enthusiastic about. This VTOL UAV has 2.5 hr estimated flight time with payload, and around 4 hours endurance…


Added by jlcortex on November 18, 2015 at 12:00pm — 49 Comments

Huge quadcopters can be attractive alternative to fixed wing for mapping and survey

The sUAS market for surveying applications are dominated by fixed-wing aircraft instead of multicopters. The reason is obvious, the multicopters have very short flight time and can not run long flight plans.

I'm not sure that this will go on for…


Added by jlcortex on August 18, 2014 at 1:00pm — 60 Comments

My setup to use droidplanner

I am designing this TX mod to use Droidplanner with big phones or tablets. I am planning to use for photogrametry with multicopters and planes.

I use mavlink telemetry through gitsly/openLRSng (

I think it is a great…


Added by jlcortex on June 13, 2014 at 11:54am — 19 Comments

Probably the smallest arducopter frame?

A long long time since I published last time, I'm drawing something fun and I thought you would like to see it!

It is a small frame all cnc machined from delrin sheet for 5" propellers. It seems a crazy project but i have a friend flying this kind of multicopters and it is really…


Added by jlcortex on November 4, 2013 at 3:12pm — 40 Comments

Seaplane UAV concept

It is only a design exercise with a wingspan of 1640mm, and a lot of space for electronics and batteries and very easy access to electronics. Last image shows 6 x 5000mAh/3S.






Added by jlcortex on March 28, 2011 at 2:13pm — 5 Comments

Simple way to use Google Earth as ground station.

I am looking for use google earth as ground station.

i have download this program.

it is easy to interface to any application:

GooPs can receive data from other applications via a TCP/IP socket. GooPs listens on port 51234 for messages containing NMEA data.

and another similar program:

it demostrates it is possible but

Where can… Continue

Added by jlcortex on June 28, 2009 at 9:26am — 6 Comments

Centripetal force compensation testing with a old record player.

Centripetal force compensation is a algorithm than compensate centripetal forces effect over accelerometers so AHRS could get a correct attitude measurement during large turns.

we are using a simple record player to test centripetal compensation.

Effect of centripetal force could be a problem if the plane stay in a turn for a large time, for example doing… Continue

Added by jlcortex on June 22, 2009 at 10:25am — 9 Comments

Our Artificial horizon ready to fly (data download through Xbee PRO)

Ready to make the first flight test with our nanoAHRS. Servos are connected to nanoAHRS and standard receiver are connected by PPM to nanoAHRS. All channels are downloaded in realtime through Xbee PRO.…


Added by jlcortex on June 18, 2009 at 8:58am — 7 Comments

Hi, i just make a video with DCM algorithm working in my small "nanoAHRS" board. Jlcortex

Hi, i just make a video with DCM algorithm working in my small "nanoAHRS" board.…


Added by jlcortex on June 8, 2009 at 1:05pm — 9 Comments

Testing inertial attitude estimation in my hardware

I am testing DCM update with PI drift tracking. I am using one closed loop with gravity vector and other for magnetic field vector (3 axis vector), i am comparing measured vector with my local magnetic field vector. it works ok!

i have read than magnetometers can not be used with electric motors, but i have tested this board over a electric plane, and i can see noise due electric motor is very very small, it is dificult to see any effect in algorithm… Continue

Added by jlcortex on May 13, 2009 at 1:38pm — 4 Comments

Bidirectional RC transmitter with ARM7, Xbee PRO, Bluetooth and a PDA (2)

I am working in my bidirectional transmitter. i has built parts in plastic with my hobby cnc machine. it looks very technical device!!!

i have not received PCB yet.

i post some pictures of not finished assembly.

We are testing XBee Pro Series 2 with ZB firmware now, it seems than 5 Kbytes/sec is possible. We publish transfer rate speed as soon as we finish testings.



Added by jlcortex on March 12, 2009 at 12:37pm — 13 Comments


Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Vertical Horizontal one, is here

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