What is the air buoyancy of a 5400m3 helium airship (helium density 0.18kg/m3, air density 1.29kg/m3, g = 1.0kg/m3)

What is the air buoyancy of a 5400m3 helium airship (helium density 0.18kg/m3, air density 1.29kg/m3, g = 1.0kg/m3)

F floating = g row = ρ gas GV row = 1.29kg/m3 × 10N / kg × 5400m3 = 69660n

There is an airship with a volume of 1000 m3 near the ground. How buoyant is the air to it
There is an airship with a volume of 1000m3 near the ground. What is the buoyancy of air on it? If the self weight is 1000N, what is the maximum payload when it is launched (air density is 1.29kg/m3. G = 10N / kg)
kuaikuaikuai!

According to Archimedes' law f = ρ gas GV row
Ψ f floating = ρ air GV airship = 1.29kg/m3 × 10N / kg × 1000m3 = 12900n
Balance by force of airship f = g airship + G object
Ψ g object = f-floating-g airship = 12900n-1000n = 11900n
A: buoyancy 12900n, maximum load 11900n

Balloons and airships use buoyancy to work, usually rushing into gases of less density than air

Balloons and airships use the buoyancy of air to work, usually rushing into less dense gases