Pulseview not opening, just opens, flashes and closes - Solution.

 Actual driver software and user interface software I used for the Hantexk 6022BL is the OEM supplied one and not SIGROK/SAELAE. This is because both SIGROK/SAELAE install their own windows USB drivers using ZADIG and stop the oscilloscope functionality of the 6022BL.

So acquire the logic data with OEM supplied Hantek software and save the output as CSV file. Be sure you have installed Hantek software in non OS drive so that it can write the required setup file during closing of the software after each use.

Then open the saved CSV file in the pulseview software for decoding. It will open after installation first time. But after viewing the CSV file and closing pulseview, when you attempt to open it the second time, pulseview briefly opens, GUI window flashes and closes. This is because it is searching for the compatible USB device, which is not there in the PC. So, as solution, to start the pulse view to open the CSV file, go to the command window in the pulseview installation directory and use pulseview.exe -c command to start pulseview. This will make   pulseview forget the past settings and make a fresh open. Good luck.

Interaction with an engine OEM

 During interaction with an engine OEM on 2nd may 2023, I saw that the specifications given by engine OEM are at ISA+44F. So I mentally converted it into ISA+6 degrees, as 32 F is 0 degrees for us and any increment after 32F is roughly half of it in Celsius scale. So my question was if specification is at ISA+6 degrees, then the engine performance will be much lower when run at Indian condition, which is ISA + 25 degree Celsius, which is 40 degree Celsius. ISA is at 15 degree Celsius.

The reply given was that ISA is at 59F for US people, so I should convert the full value to Celsius. So, they should have specified that ISA is defined in Fahrenheit for US people and then I should have converted the full value (59F+44F = 103F = 39C) to Celsius, which is close to 40 degree Celsius that Indians use. Metric system is better than US system of units.

Things he did

1.  In tirupathi, on 23rd April , when in room waiting for the full day, he told "Enaku pasikuthu " for the first time. Not sure if he was bored or really hungry, but he understood the concept of calling for food unambiguosuly.
2. Yesterday on 30th May, when asked where his white hot wheels car was, he left the room, went to his toy basket, pretended to search and told "white car kaanom".
3. On Saturday, 29th May, when I came back from Vishakapatnam in flight, and entered room, he asked "Enga pona?", meaning how you went. I told I went by Bike. He replies "Dai, nee aeroplane pona.". Then "Appa, naa aeroplane ponum".
   

#10 Helicopter: Engines with 20 HP

1.  HP and PS are almost same
2. 20HP engines are in Bullet Honda Hness. No weight information given.
3. Can make Aerolite 103 type aircraft with 2 of these engines
4. Or go and make electric motor that rotates at the same RPM as the propeller or main rotor and use that.
5. 
   
   
   
6. 

   
   
   
7. Rotax 447 40HP is 29 kg in weight
8. 

   
   
   

#9 Helicopter: 2 Designs of manned home built helicopter

1.  Nolan co-axial helicopter = https://www.youtube.com/watch?v=B21Xk6tNcBw&ab_channel=AdamAitken
   
2. BTD1982 = https://www.youtube.com/watch?v=Pz8ObaByc1M&ab_channel=btd1982
3. Cameron Carter
4. Airscooter 2 = https://www.youtube.com/watch?v=V8zqG4LRnrE&ab_channel=LightSportandUltralightFlyer
   
5. MikeUSA777 =  https://www.youtube.com/watch?v=EIBQIUANlyY&ab_channel=MikeUSA777

6. Franz Schurmann

Projects completed

1.  Digital controller based on TM4C123 for single axis AMB
2.  Digital controller based on TM4C123 for two axis AMB
3. Mechanical and electrical test rig design, assembly and testing for single axis AMB (3 versions)
   
4. Mechanical and electrical test rig design and assembly for two axis AMB 
5. Design and construction of half bridge based PWM power amplifier for AMB, 1 channel
   
6. Design and construction of full bridge based PWM power amplifier for AMB, 16 channel
7. Design and construction of DC power supply system for AMB
8. Design and construction of signal generator to mimic eddy current signal with sine and triangular wave forms
9. Radial AMB simulation model with flexible rotor
10. Radial AMB simulation model with rigid rotor
11. Automated FEM model of radial AMB using FEMM tool 
12. LQR and PID control design software for tuning radial and thrust AMB

DynCont#12: Eigen value and eigen vector 3Blue1Brown

• A vector will span a line passing through it. All points along the span, the line, can be reached by the vector using scalar multiplication.
  
•  A matrix multiplication rotates and scales a vector
• A matrix multiplication will only scale a Eigen vector , without changing its span direction.
• A rotation matrix has no eigen vector. All vectors are rotated.
• A shear matrix has one eigen vector.
• There are matrices with one eigen value and many eigen vectors, like scaling all vectors on a plane.
• See these 3 matrices and one normal eigen vector eigen value matrix in 2GBAB.