Airships in a world with 1/3 gravity but 3 times the mass of atmosphere?

In the first question I posted here on Worldbuilding Stack Exchange, I asked if lifting gas would be more effective on a world with 1/3 of Earths gravity but with the same atmospheric composition as here on earth. To my surprise I learned that there would be no difference. I admit I was disappointed; but, the answer did encourage me to do more research.

In my research I learned that a lighter gravity planet like Mars with 1/3 of Earth's gravity would need at least 3 times the mass of atmosphere here on earth to have a surface pressure of 14.7 psi. With that in mind, would airships on a world with 1/3 gravity and the same surface pressure as earth (14.7 psi) but 3 times the mass of atmosphere have higher lifting capacity than here on earth or would it stay the same due to the lower gravitational pull reducing weight and buoyancy?

posted almost 6 years ago

Tyler Phelps‭

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