At the recent Perry contest I was able to try the chute and it worked fine after a few small changes. Trish Drury was nice enough to make a series of very good pictures of the Concordia landing with chute deployment which was very helpful in sorting out the small issues. The Drogue chute is used to help the Concordia steepen the angle of descent and shorten the required landing distance.
Below are a few images from the sequence.
All images copyright Trish Drury