Watching the movie "The Great Race," Professor Fate and Max used a balloon with a prop on a bicycle for spying on the Great Leslie from above.
From my old physics math I know one liter of helium lifts one gram. So a P4 weighs in at 1,380 grams. There are a lot of 60" balloons out there for about $17 ( https://www.amazon.com/dp/B007OK1BMK?psc=1 ) so by my questionable AM math skills, it would take about a 54-55 inch diameter helium balloon to lift a P4. Bit less for negative buoyancy to float it safely down to earth.
If the P4 had an eyelet in the middle of the top, then one might devise a means to keep the P4 "FAA approved" for flights over people with a balloon attached there via a cable and also keeping cops from claiming "It was unsafe to do so" and leading to an arrest with that Trump overhead flyer. Don't know about the flight characteristics though (Slower).
Just my AM notes to self....
From my old physics math I know one liter of helium lifts one gram. So a P4 weighs in at 1,380 grams. There are a lot of 60" balloons out there for about $17 ( https://www.amazon.com/dp/B007OK1BMK?psc=1 ) so by my questionable AM math skills, it would take about a 54-55 inch diameter helium balloon to lift a P4. Bit less for negative buoyancy to float it safely down to earth.
If the P4 had an eyelet in the middle of the top, then one might devise a means to keep the P4 "FAA approved" for flights over people with a balloon attached there via a cable and also keeping cops from claiming "It was unsafe to do so" and leading to an arrest with that Trump overhead flyer. Don't know about the flight characteristics though (Slower).
Just my AM notes to self....