PC for chest reserves

[alexey 6]

Why on most military chest reserves spring PC not connected to apex, or uses fome fancy combo of springless PC and non connected spring (MIRPS\t11R)?

Lexa

[JerryBaumchen 1,436]

Hi Alexey,

Quote

Why

Take three engineers, put them into seperate rooms, give each the same problem; you will get three completely different solutions & all three will work.

Jerry Baumchen

[riggerrob 643]

After the initial launch, pilot chute springs quickly become nuisances. Springs over-extend, then over-contract, then repeat until the spring dissipates all its energy.
The weight of the spring can become a liability after initial PC launch. Some ejection seats have separate (soft) pilot chutes and springs. Often the spring is enclosed in a cloth case (Para Pack) to reduce the risk of entanglement with other components.