Tag Archives: ducted

The ideal shape for a multirotor ‘ducted-fan’ that can dramatically improve thrust and flight time.

2018 update: User Wob Barley has built a working model of this duct based on David’s model (see update below) and done some tests which suggest an impressive 40% efficiency/40% thrust increases over open propellers. Here is a video of the … Continue reading

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Breaking through the 2 hour barrier – Maximising efficiency to achieve the longest flight time of an electric multirotor (quadcopter)

The current record holders. Small electric RC helicopters and multirotors are known for their very short flight times. Even after considerable effort the current record holders (as of Jan 2015) for longest flight time that I can find for an electric helicopter is … Continue reading

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