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Ah Grasshopper!

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Ah Grasshopper!

Old 13th Mar 2019, 18:50
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Ah Grasshopper!

A Johannesburg firm has designed a drone that lifts off directly from rest but not with vertical lift. It has legs that push it up like a grasshopper.

Interesting to see a novel approach and wondering if the technology could be scaled for passenger carrying light aircraft, say up to two passengers?
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Old 13th Mar 2019, 19:56
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I had a Spacehopper once...

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Old 13th Mar 2019, 21:44
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Originally Posted by ChrisVJ View Post
It has legs that push it up like a grasshopper.
Are these legs powered by 'gas' or mechanical springs?
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Old 13th Mar 2019, 22:03
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It's just not cricket ...
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Old 13th Mar 2019, 22:34
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I have scoured the news reports and the Passerine Aircraft website without further information.
The craft is electrically powered, but I don't think that any electric actuator could react quickly enough to 'spring' the mechanism - maybe it 'winds up' a spring lever?
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Old 14th Mar 2019, 02:54
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The article (with video) did not mention the driving force behind the legs.

What I love about the current time is the new ideas behind some quite traditional things. For instance there is a design for a seaplane using foils to get the hull out of the water so the aircraft is not hampered by the traditional seaplane hull. Also after so many thousand years the application of foils to sailing boats. Foils have been around for ages, why did it take so long to be applied to sail. (I went on a foiling ferry over fifty years ago!)

Again, just in the last five years or so the change in design of racing yachts from hull speed 'in the water' boats to wide flat hulls which are planing almost all the time.
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Old 14th Mar 2019, 08:24
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It took a while to develop.

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