Electric Helicopter

Here:
YouTube - Sikorsky Firefly: An Electric Helicopter
and here:
YouTube - Sikorsky Firefly prototype- EAA 2010

anyone have other news?

Months ago Sikorsky said it would be flying in the 4th quarter of 2010.

On Wednesday Bell said "We’re going to execute first then talk about it.”




Different strokes for different folks.

15min battery run time ? not even enough time to take off and land safely

For those who are interested in the potential for electric helicopters, the following document will be of interest. It is non-technical and quite impressive.

The Hughes 369 is used for evaluation. Therefore this 1981 document maybe the precursor of the current Sikorsky Firefly project.


Practical Feasibility Assessment of Electric Power Propulsion in Small Helicopters Using Lithium Hydroxide Battery Technology


Dave