Jinwook's UAS Blog

  My team and I have been dealing with RV jet(fixed-wing aircraft) by wiring and programming an RV jet. We had to draw a wiring diagram for all components of the RV jet in order to wire the RV jet on our own. So, I made each part of the wiring diagram with my teammate. after that, we got RV jet all connected based on our diagram.  The next step was calibrating sensors and setting up systems. First of all, we started to set up systems for the RV jet by uploading the latest firewire version. But, there were some issues with the Ardupilot we had to choose the PX4 Pro Stable Release v1.13.2 firmware version instead of Ardupilot. We ended up uploading the firmware. And then we calibrated the gyroscope and the accelerometer. It was easier than the last one. All we had to do was hold the aircraft in straightforward for the gyroscope and we held it downward facing for the accelerometer. The final step was to calibrate the airspeed indicator and pilot system. We tried to do it with def...

  We made a motor move by using simple buttons to replace the complexities of the electronic speed controller. in order to accomplish this, we needed to create a circuit by completing particular circuit routes  ​ There are two components that consist of BLDC motor. the first one is a stationary component called a stator and stators have several distinct coils of wire that carry electrical current. the other one is a rotating component called a rotor and this rotor consists of permanent magnets outlining the casing.  ​ ㅁ When current flows through a coil of wire, it creates a magnetic field with distinct north and south poles that functions much like a regular magnet. ㅁ The poles of the permanent magnet and electromagnet must either attract or repel each other based on the direction of the current flow in order to cause rotation of the BLDC. If we apply the appropriate current, the coil will generate a magnetic field that will attract the rotors permanent magnet. Now if we...

  1. Location: Connection Point Church (2541 Cumberland Ave, West Lafayette, IN 47906) 2. Check Out Procedures: ⁃ Mavic 2 Pro AC ⁃ Firmware Update to Mavic 2 V01.00.0790 ⁃ Battery MV3/3350/70 Fully Charged ⁃ Controller AC Fully charged ⁃ Propeller Color 2 Gray/2 Black ⁃ Safe Vest:2 3. Preflight: ⁃ FAA Part 107 certificate: 4608538 Valid ⁃ METAR: KLAF 111854Z 20004KT 7SM OVC009 08/06 A2977 RMK AO2 SLP082 T00830061 ⁃ NO TFR FOR KLAF/LAF, NO NOTAM HAZARDS FOR DESIGNATED FLIGHT AREA ⁃ Visibility: 7 SM ⁃ Ceiling: 900ft AGL ⁃ Temperature: 8.3C/47F ⁃ Air Pressure: 1007 hPa ⁃ Wind: 160@4kts ⁃ Precipitation: 5% Acc. NOAA, 95% of sky coverage. ⁃ No flight restrictions at designated flight area. (According to DJI Geozone, Authorization has men approved) 4. Potential Flight Hazards - Potential flight hazards - the birds - some obstacles on the parking lot (three lights) - Emergency landing location - the whole parking lot that is flat. It is stable to land without a landing pad in an emergency...

  After tearing down UAS, we redesigned the motor mount on the drone arms This is our orthographic. top part bottom part With these sketches, we sketched the top part and bottom parts in NX CAD. before doing this, I practiced NX CAD with some tutorials that dr. rose gave. I learned a lot by dealing with some hard tutorials. Designing these two parts is less complicated than the hard parts of tutorials. Even though these two parts were less complicated than that, some parts were still hard for us. So, we changed some parts when we designed it in NX CAD. But, we did add some support beams that make this arm stronger. Everything was great, but after printing it out, we found out there was no one hole at the top part. We were trying to make a hole physically by pushing it with a needle. it didn't work and the main hole in the top part was small for the motor. It didn't fit the motor. we did measure the diameter of motor. but, we should've left some space for the motor because t...

 My team had a chance to teardown UAS for this two-week lab. It was a lot more complicated than I thought. And some parts of our drone were already missing from the get-go, we were confused at first but we ended up tearing down ours perfectly. This is the process for teardown. Tear-Down Instructions: 1: Take Screws out of the center plastic that holds the harness w/ Phillips screwdriver (4 Screws) 2: Take Velcro Senor Harness off 3: Unplug Wires from Wire Hub 1, 2, 3, 4 , RCN Power2, USB, GPS 1 4: Unscrew/Take off Wire Hub 5: Unscrew and Take Off Plate/Assembly that holds the GPS station 6: Unscrew GPS Holder/Tower 7: Remove GPS sensor from GPS holder/tower 8: Cut the zip ties on the SimonK 30A 9: Cut the zip ties on the propeller arms 10: Unscrew and remove the top and bottom screws from the motor mounts 11: Remove Channel Receiver 12: Unscrew and Remove Prop Arms 13: Separate Central Square Plastic Mounts by removing the screws on both sides and the spacers in-between 14. Unscrew...

  Today's lab was focusing on operating a Mavic 2 pro beyond BVLOS(beyond visual line of sight). I flew a drone by relying on just VO without VLOS. All I had to was just following what VO wanted me to do to complete the goal of this lab. Even though I successfully took every picture of the targets, It was a little bit confusing when I flew a drone in reverse just with VO without VLOS because we had a different view. Target

We were assigned each flight altitude to check battery consumption at different altitudes. We flew at 121m and we collected each data from different altitudes(3m, 25m, 50m, 75m, 100m, 121m), after data collection we made a graph that shows real wind data from Purdue’s Mesonet. Collecting the wind data was not hard for us. The thing is making a graph with the data we collected. I used to learn excel when I was a kid. but I totally forgot to make a graph. Making a graph in excel was a learning curve for us at first. But, we finally figured out making a graph.