Converged IoT Developer Platform

I installed a popular utility and a popular racing drone motor on a helicopter for IOT/MQTT/COAP research to see what would happen. It flipped, proximity-dived, and then cruised for 35 minutes straight, beating the next best commercial platform of 250 grams by 50+% extra endurance! The fuselage is a Blade Fusion 180 body; the main motor size is 2806 of utility inspector drones. The flight computer is taken from a real estate video shooting drone HGHGLRC Sector25cr (250 grams). The tail motor is from the racing quadcopter HGLRC Petrel 120x.  Is it nice if highways are patrolled by camera drones to broadcast the video of traffic accidents, and an AI server phones motorists to get out of the road at the immediate exit before lining up in a traffic jam?

The build procedures notes are 

https://nocomputerbutphone.blogspot.com/2018/09/converged-iot-platform-build-notes.html

https://nocomputerbutphone.blogspot.com/2020/04/iot-platform-endurance.html

https://nocomputerbutphone.blogspot.com/2018/08/converged-drone-at-edge-of-space.html

The part listing is in the following table. Combo products are entries across different spreadsheets of this project, but split combo pricing to individual entries. Shipping discounts for multiple items from a vendor have been applied. No volume discounts.

The Horizon (Blade brand) components are priced the same on eBay and Amazon both with free shipping, as shown in the eBay and Amazon checkouts.

The entire craft is built without a machine shop and can be repaired by professionals in a car.  Only light hand tools and light electric tools powered by car batteries are needed. This creates jobs.

The World Is The Supply Chain Even For Specialty Parts - Cusped Airfoil

Cusped airfoil 10.5% thickness (joukowsky10.5 for short) rotor blades are interchangeable with conventional parts: The production build's cusped airfoil on the rotor blades is known to extend the efficient angle of attack range for thin blades, discussed in https://estebanhufstedler.com/2020/09/24/joukowski-airfoil-l-d/ and https://estebanhufstedler.com/2020/07/14/improving-the-naca-00xx-airfoil/.  The Fusion 180mm blade is modified from the NACA0010 thin airfoil with a cusped trailing edge. The result is that its fuel economy is nearly identical to that of the NACA0012 medium-thickness airfoil under the same operating parameters (blade speed and alpha). The reduced drag for the high angle of attack also keeps the stall angle of attack outside the operating angle of 10 degrees, similar to NACA0012. One video of the endurance test (6 degrees collective pitch), 3 videos of performance tests (8 degrees), and 2 videos of an extraneous test (10 degrees) are below in order. The NACA0012 blades operate with optimal efficiency at 5 degrees of alpha in static tests, and due to the quirk of vertical rotor fluid dynamics, the optimal angle of attack for cruising is 1 degree higher than that of the static test. Since the cusped blades perform nearly identically to NACA0012 blades, the endurance cruising test was done with 5+1=6 degrees of collective pitch.

Airfoil data is from 

http://airfoiltools.com/airfoil/details?airfoil=naca0015-il , http://airfoiltools.com/airfoil/details?airfoil=n0012-il

http://airfoiltools.com/airfoil/details?airfoil=joukowsk0009-jf , http://airfoiltools.com/airfoil/details?airfoil=joukowsk-il