Yes, and it involves a lot of the considerations we're bringing up here.
Engines do fail on passenger jetliners from time to time. There are numerous stories of planes landing safely after an engine catches fire. But the plane is travelling at a good speed through the atmosphere. How would things be different in a much smaller vehicle sitting stationary in a mild vacuum?
How would passengers escape a battery fire? (as has been seen multiple times on very modern jets)
If the tube had to be repressurized in an emergency, how long would the tube be out of service to be pumped back down again?
Is it worth building a three tube system for such a possibility?
Engines do fail on passenger jetliners from time to time. There are numerous stories of planes landing safely after an engine catches fire. But the plane is travelling at a good speed through the atmosphere. How would things be different in a much smaller vehicle sitting stationary in a mild vacuum?
How would passengers escape a battery fire? (as has been seen multiple times on very modern jets)
If the tube had to be repressurized in an emergency, how long would the tube be out of service to be pumped back down again?
Is it worth building a three tube system for such a possibility?