3 ms·
An airship can be designed to fly to over 100,000 ft, so you could design anywhere in between. Above 60,000 feet the average wind speed drops to 20 knots or so
by thrill 4y ago
An airship can be designed to fly to over 100,000 ft, so you could design anywhere in between. Above 60,000 feet the average wind speed drops to 20 knots or so.