Winter 2017

This newsletter issue represents the 10th year of publication of the Newsletter!

This newsletter covers the work on the Jefferson Jyrodyne prototype and 1/10th scale drone from the beginning of 2017 until the beginning of April, 2017.

In January, the Air and Space Museum was visited. The Army personal ducted fan is depicted below. The Jyrodyne is a tad larger…

The 2nd half of March included an annual scheduled trip to the Sun N Fun Fly in at Lakeland, Florida.

Hangar move
With the hangar move completed at the end of December, there has been a lot of miscellaneous re-organization, cleanup and storage of miscellaneous parts. This has involved some new construction.

Newly fabricated workbench with vise and pegboard.

New rolling shelf unit for large parts.

RC Models 2014 and 2016
The old 2014 Model has been undergoing taxi tests. The ESC for the engine is being relocated for better cooling.

The 2016 model is undergoing engine tests. A data logger with graphing capabilities and new LiPo charger are allowing better evaluation of the best
vendor batteries for use for the VTOL engine. Power output now from the main VTOL engine is nearly 3 kilowatts, weighting less than one pound.

Model 2017
The Model 2016 is overweight at 17 pounds, and the next model is undergoing a rigorous weight reduction program.

Full-sized Jyrodyne
The passenger compartment is also undergoing the process of being attached to the ringspar. Work has progressed on attaching parts to the ringspar, which is the “backbone” of the aircraft.


This figure shows the right midrigger being attached to the ringspar. Fittings for the left midrigger have already been added to the ringspar. This work has progressed slowly due to the many layers of carbon fiber laid up sequentially on the ringspar fittings.

The next steps include final adjustments of the ringspar couplings, and installation of the drive train and its support fairings.

Gantry Crane
Attaching the wings to the midriggers is the next step. The gantry crane is necessary to hold the wings in the proper orientation while the wingroot fittings are mated between the wing root and the midrigger. A 10’ stepladder is on order.

The top wings set almost 10’ off the floor, so the gantry crane is over 12’ tall! Since the wings all up, weigh less than 50 pounds apiece, the gantry crane can be of light construction.