QUOTE (yurdel @ Apr 23 2009, 09:56 AM)

I'm animate this picture -
The booklet of Perminov you can download
here The drawing you animate is on page 50 of the pdf, the picture I am referring to is on page 51. There is indeed a difference in how the parachute is released. On page 49 of the book the description is:
QUOTE
Depending on the descent velocity, in an altitude range of 16 to 30 meters, the high-altitude radar-altimeter issues a command; the onboard radio system is disconnected, the engine that controls the soft landing is started, and a second PVM program is initiated. When the landers vertical speed of descent drops to 6.5 meters per second, the low-altitude radar-altimeter issues a command to break the metallic ribbons that attach the parachute-instrument module to the automatic Martian station. Simultaneously, the engine that controls the maneuvering of the parachute container is started.
This seems to indicate the parachute remained attached to the parachute container while the soft landing engine was firing (as shown in page 51 drawing), but I agree that the 2 drawings differ in this, I'm afraid only way to make sure is find one of the original technicians and ask...
I'm also interested in what was the color of the parachute, some of the artwork seems to suggest it was red-white which is a pity given the red colored landscape on Mars, they should make parachutes for Mars landers bright green or something...