wrote on 4/8/2020 4:41 PM:
I'm hoping that someone creates an electric self-launch glider with complete propulsion redundancy: two 20kW motors, two propellors, two batterey packs, two speed controls. Any single failure would leave you with at least sustainer performance.

A traditional motorglider must be flown like an unpowered sailplane; you must keep safe landing options within glide. With sufficient redundancy, it would not be unreasonable to enjoy soaring in some entirely new and inhospitable places.

Here is the simplest system I have thought of: Start with an FES self-launcher,
then add a fixed mast with a similar motor and a pusher folding propeller. One
battery for each motor, giving you two independent systems. You still have the
same available climb or distance ability.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1