Cool project! I worked on a hybrid airship project.
H vs He. H for the win. H gives 10% more lift than He, and you can manufacture more H. Long-term this efficiency will allow you to haul more sensor payload, or to make a more useful aircraft. H has been used as a lifting gas on other projects in the U.S., and besides, your aircraft is unmanned.
Wind concerns. Addressable, but there will be some days you'll simply be grounded due to high winds. So are helicopters, though. Long-term you may want to look at hybrid lift designs for your aircraft (add some wings for aerodynamic lift, and make it net heavier than air).
Business concerns. The HN community has given some great feedback. The sales cycle will be long, so plan accordingly.
H vs He. H for the win. H gives 10% more lift than He, and you can manufacture more H. Long-term this efficiency will allow you to haul more sensor payload, or to make a more useful aircraft. H has been used as a lifting gas on other projects in the U.S., and besides, your aircraft is unmanned.
Wind concerns. Addressable, but there will be some days you'll simply be grounded due to high winds. So are helicopters, though. Long-term you may want to look at hybrid lift designs for your aircraft (add some wings for aerodynamic lift, and make it net heavier than air).
Business concerns. The HN community has given some great feedback. The sales cycle will be long, so plan accordingly.