Questions tagged [e-fan]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
16
votes
2answers
19k views

What are the advantages and disadvantages of ducted fans in designs such as the Airbus E-Fan?

I have read that it increases thrust and reduces noise. Is there a downside to this? (Image source: Wikipedia)
7
votes
2answers
1k views

What is the weight of the batteries on the e-Fan?

Airbus' own (early) page with technical data about the e-Fan provides some information about the batteries. It can, for instance, be calculated that they hold approx. 19kWh of energy if you accept a ...
1
vote
1answer
87 views

How do I determine the maximum thrust that a Tesla powertrain (P100D for example) could produce if attached to a single propeller?

I am theorizing a drone helicopter from a tesla powertrain (P100D). Lets assume the system is theoretically maximized with an optimum propeller (this is what I am currently stuck on). How much thrust ...
1
vote
1answer
961 views

What would be the best fan duct design to achieve maximum thrust?

I have a few brushless motors and I am trying to get the best thrust out of each motor. I am busy doing some research but can't get a clear answer. What would be the best fan duct design to achieve ...
1
vote
0answers
98 views

What are the effective span and lifting properties of a circular wing?

Today I read an article on FlightGlobal about the Bell air taxi demonstrator. It includes some paraphrased quotes from the Bell VP of innovation, Scott Drennan, among which the following stood out: ...
0
votes
1answer
130 views

Is it possible to build 'Contra-rotating' EDF?

Is it possible to design an EDF (Electric Ducted Fan), with two counterrotating blades, that will have more thrust than two separate EDFs with the same blades?