After seat/pilot separation, the seat survival kit (SSK) is lowered automatically after how many seconds?

The seat survival kit (SSK) is designed to enhance the safety of the pilot after ejection. After a pilot separates from the seat, the SSK is automatically deployed to provide immediate access to essential survival gear. This deployment occurs precisely 4 seconds after seat/pilot separation. The timing is carefully calculated to ensure that the pilot has a sufficient moment to stabilize their descent and ensure safety before the survival kit is released, optimizing the chances of survival in an emergency. This timing is integral to the design and overall effectiveness of the ejection system, reflecting a balance between speed and safety for the pilot.