|astronautix.com||Apollo dual drogue parachutes in drop test|
Northrop-Ventura verified the strength of the dual drogue parachutes in a drop test at El Centro, Calif. This was also the first airborne test of the new mortar by which the drogues were deployed and of the new pilot parachute risers, made of steel cables. All planned objectives were met.
The deployment sequence was perfect, and there was no apparent kinking of the risers.
In the course of this drop, six of the 12 cutters, which sever the reefing lines on the main parachutes, failed. This failure, together with another cutter malfunction during the previous month, signaled an intensive investigation at Ordco, the cutter manufacturer. Qualification of the severing device was thereby delayed.
On January 22, Northrop, North American, and MSC conducted a design review for the drogue system and found no discrepancies. References: 16 .