Quantcast

Birdy electric motorglider

HomeBuiltAirplanes.com

Help Support HomeBuiltAirplanes.com:

Aesquire

Well-Known Member
Joined
Jul 28, 2014
Messages
2,446
Location
Rochester, NY, USA
Lovely.

A 3 blade prop might be better for noise, but other than that, nicely done. I want one if it'll take a 200 pound pilot, and I win the lottery.

Very clean & clever motor mounting.
 

Aesquire

Well-Known Member
Joined
Jul 28, 2014
Messages
2,446
Location
Rochester, NY, USA
Yes, contrarotating props with 2 electric motors would be efficient, and less complex than a contrarotating PSRU, but my comment was about noise. The 2 blades passing simultaneously through the wake of the vertical stabilizer increase vibration & noise. 3 blade prop adds a blade, hinge, & larger hub. Should be a simple bolt on.
 

Dan G

New Member
HBA Supporter
Joined
Oct 26, 2019
Messages
2
This vehicle is a motor glider-most of the time it will fly with engine not in operation. Prop efficiency and noise is less important than simplicity and light weight and mainly low drag when not running.
 

henryk

Well-Known Member
Joined
Mar 8, 2010
Messages
5,463
Location
krakow,poland
contrarotating props with 2 electric motors would be efficient,
=CR propellers with ONLY one motor are much better,as with two motors
(weight,thrust,noise,cooling...)


=iff not for MOTORGLIDERS ?

(ZENOACH G25, circa 20 HP...)
 
Last edited:
Top