2016-ongoing More and more research. The scale of this project is informed by Conventional Gas Paramotors. They produce ~100-200lbs Thrust, 25-40mph, 30-60mi range and are $4-10k Used. I’m always excited to verify my internet-based research by checking out the real deal. Taking notes on construction of frame, weight placement, safety, redundancies, etc… More information has been drawn by other light aircraft and other DIYers
Version0: Feasibility Using Spare RC aircraft parts, I achieved 20lbs thrust pretty easily. This could be higher as the motors+ESCs could handle higher current and higher voltage. Progress was slow because I was sourcing larger motors, batteries, ESCs, and renovating our Oregon house’s basement into a finished suite… just in time to move to California.
I should note that I am a certified P3 Paraglider Pilot with current rating. I have spent decades designing and building hobby aircraft and have experienced the many ways they can fail. I also have ~20hrs logged flight time towards private pilots license. I am proceeding very carefully… despite what my mother-in-law thinks.
Version1 Much Closer. Fit test: It’s important to ensure fundamental paraglider handling so I did some kiting and a few easy unpowered glides. Until I build a substantial propeller cage, I do not want to risk operating this thing in the air. Version1 produced 50lbs of thrust from a 24” propeller, using a 5kW brushless motor running at just 2kW (due to the ESC I had available).
Placeholder Propeller Cage has been good for blasting around on a longboard at 30mph. Sufficient to keep Paraglider lines out but would not standoff the propeller in a crash
Version2 GOING BIGGER: I scored a 20kW motor+ESC that didn’t break my wallet. Conventional Paramotors output ~10kW. This should—…nay WILL be more than enough to turn the 40” propeller for estimated 150lbs thrust, greatly exceeding the minimum target.
…I really need a garage again.
I have have begun design around the propeller cage. The conical shape and my objective to have it quickly disassemble make it the design driver in context of motor placement, COG, and pilot harness.
Parts are being prototyped on my home modified 3D printer. When I confirm the fitment of everything, I’ve found some affordable rapid machining suppliers to make it final. Targeting first flights for October2019 (I’m in Finland during my wife’s Fulbright research for now!)