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First NASA Soyuz TMA-11 documents
More info from James Oberg
http://www.spectrum.ieee.org/may08/6229 This is interesting: "However, a suggestive detail in the postlanding photography, a thruster mounting with jagged gaps alongside it, indicates that an attitude thruster burned through. Such damage would have reduced or even entirely eliminated the crew's ability to point the crew module during descent. The thruster could have been lost as a consequence of a vain attempt to steer the much-heavier-than-expected combined vehicle through the initial buffeting." Soyuz TMA RV thrusters use simple hydrogen peroxide decomposition to generate thrust, so you'd think the comparatively low temperatures involved wouldn't burn through a thruster... was the thruster damaged during reentry? Another interesting section: "In addition, Yi So-yeon, the South Korean flight participant, reported in interviews in Seoul that the final ground impact was not vertical but sideways, causing many heavy baggage items to break free from restraints and hit her." After parachute deployment the capsule is supposed to fire a system that releases a bridle from the side-mounted parachute housing that then swings up over the top hatch, so that the capsule is descending vertically under the chute. If it did hit sideways, that suggests something went wrong with the bridle release and in that case the landing rockets wouldn't cushion the landing much on impact. Pat |
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