空気カプセルの特性

空気カプセル輸送の研究 (第1報)

抄録

For relieving the congestion of freight traffic, new transportation systems have been developed and proposed. The pneumatic capsule pipeline is one of the most promising systems
The leak factor and the coefficient of the rolling resistance of capsules are the characteristics of major importance in designing the pneumatic capsule pipeline system.
The experimental investigations were carried out on these characteristics by using 300mm and lm diameter test piepline. The results obtained are shown below.
1) The leak factor Ii defined as eq.(2) can be calculated as follows.
Ψ=1/2 (1/k²-1)(1)
k²the seal/pipe area
(2)
u: mean velocity of air flow, ν: capsule velocity, ρ: density of air,
Δρ: pressure dropinduced by capsule
2) The leak factor does not depend on the eccentric setting of the seal plates and Reynolds number within a range of practical apPlication.
3) The coefficient of rolling resistance is mainly affected by the error on setting wheels of the capsule.