Jefferson Jyrodynes

The Jefferson Jyrodyne™ is a 210 hp, two passenger aircraft trainer when in VTOL (vertical takeoff and landing) mode. In STOL or what is considered conventional flight, it is a four passenger aircraft with a 600-1000 lbs. payload.

Jefferson Jyrodynes, Inc. is a Chapter S corporation whose ultimate objective is to build VTOL fire trucks and ambulances. We plan to offer homebuilders kits for a personal aircraft version, along with a hopping airboat version.

Recent Posts

Spring 2019

Work continues on modifying the original Jefferson Jyrodyne design to take advantage of recent electric motor developments.  A far larger CL and CG range will now be allowable than was theoretically possible before, and has an extra dimensional consideration, since both CL and CG can now more easily move in two dimensions, rather than […]

Fall 2017-Spring 2018

This newsletter covers the work on the Jefferson Jyrodyne prototype and 1/10th scale drones from July 2017 until the end of April, 2018. The next issue will be the last of the series. Further references may be found on website,

I do some blogging now on an irregular basis on the website about […]