I would imagine a dehumidifier would make some difference, with the amount of difference made depending on the throughput of the dehumidifier and the amount of water getting in. Obviously, if your shed has slatted sides and the wind breezing through, then there isn't much point. On the other hand, if your hangar is mostly sealed, but has a little bit of leakage and seepage, and you have a reasonably beefy dehumidifier, it'll probably reduce condensation quite a lot.
Whether this is the most economical solution, or whether it's 'good enough' is not something I'm qualified to answer, sadly.