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> About three weeks before the cherries are ready to be picked, they are particularly vulnerable to threats that can damage them. One of those threats is water.
by dmitryminkovsky 8y ago
> About three weeks before the cherries are ready to be picked, they are particularly vulnerable to threats that can damage them. One of those threats is water. When it rains, the water sticks to the cherries and can cause them to rot, split, or both. This makes the cherries far less valuable to buyers.
> Cherry growers have long tried to find ways to dry the cherries and prevent the rot/split problems. They put fans on tall poles in their orchards and run blowers up and down the rows. But this isn’t usually effective. Enough rain in those last few weeks can destroy the entire crop.
> Sometime in the past — maybe 10 or 15 years ago? — someone had the idea of using the downwash of helicopters hovering over the cherry trees to blow the branches around and shake the water off the cherries. This was extremely effective and apparently well worth the cost.
> “Cherry drying” by helicopter was born.
I was expecting something like spraying a desiccant. This is so much cooler. But pretty sad in terms of carbon emissions. Can this be done by drone?
Does this explain the whole cheaper class of split cherries you can buy during cherry season in New York, usually from street vendors?
- CompelTechnic 8y agoIf you think that a lightweight drone will give just as much wind power as a heavy helicopter, you need to think about F=MA a bit. The weight of the pilot (and supporting systems) act as balast against which the "fan" can push. Otherwise the fan would accelerate into the sky. More ballast = bigger fan, and a huuuuge fan is way better than a small fan given the problem at hand.
- dmitryminkovsky 8y agoYes great point. Thank you. So 2000 dollars in fuel and helicopter actually gives you good bang for your buck here?
- ip26 8y agoAt least compared to losing the harvest, obviously the answer is yes. At $5/lb, 400lbs of cherries pays for the helicopter.