New article on Tass.http://tass.ru/en/non-political/792434
What are the addition risk of an uncontrolled re-entry? No parts will survive regardless? No threat to people if it happens over land?
Progress M-12M more or less went through re-entry during its aborted launch, and some pieces reportedly hit the ground, but not much.
Well that info leaves three paths to follow:1) collided with Blok-I because stage burned to depletion and did not perform CCAM2) Progress Prop system over pressurized and exploded3) Progress is spinning so fast that the angular momentum shed debris from the SC.
Quote from: Danderman on 04/29/2015 12:47 pmProgress M-12M more or less went through re-entry during its aborted launch, and some pieces reportedly hit the ground, but not much. I'd be cautious in generalizing this since the impact zone was mountainous [recall the photos?] and probably less than 1% of the ground was actually searched.
Quote from: Galactic Penguin SST on 04/29/2015 12:48 pmCan someone translate this piece of Russian on NK? Seems to be something about losing telemetry from the Soyuz 3rd stage in the final 3 seconds of ascent? Okay, I'll give it a shot, thanks to Google Translate:
Can someone translate this piece of Russian on NK? Seems to be something about losing telemetry from the Soyuz 3rd stage in the final 3 seconds of ascent?
Just got word from my sources at NLR, thru their contacts at ESA-ISS, that Roscosmos has declared Progress M-27M a total loss. There will be no furter attempts to regain control. No updates on cause of this failure.
Tweaked translationFirst Quote"At the end of insertion, were rocket TLM (telemetry)and VTI received?"Second Quote"Dropped out 3 seconds before GK-3"Third Quote"Someone here in Samara already said that confirmation of GK3 was received. How could it have been received, if TM malfunctioned?"Fourth QuoteWell, but this is still the information (?) I guess it was due to the AVD (Engine emergency shutdown system) during the 3rd stage burnA look at the telemetry parameters and it will become clear.Quote from: Ben the Space Brit on 04/29/2015 12:55 pmQuote from: Galactic Penguin SST on 04/29/2015 12:48 pmCan someone translate this piece of Russian on NK? Seems to be something about losing telemetry from the Soyuz 3rd stage in the final 3 seconds of ascent? Okay, I'll give it a shot, thanks to Google Translate:
Quote from: woods170 on 04/29/2015 01:37 pmJust got word from my sources at NLR, thru their contacts at ESA-ISS, that Roscosmos has declared Progress M-27M a total loss. There will be no furter attempts to regain control. No updates on cause of this failure.This was reported by Russian sources a few hours ago, but it seems to have been refuted just now.
Quote from: JimO on 04/29/2015 01:20 pmQuote from: Danderman on 04/29/2015 12:47 pmProgress M-12M more or less went through re-entry during its aborted launch, and some pieces reportedly hit the ground, but not much. I'd be cautious in generalizing this since the impact zone was mountainous [recall the photos?] and probably less than 1% of the ground was actually searched. Let me remind everyone that Progress were routinely de-orbited over land back in the days of the Raduga capsule.And ... Soyuz spacecraft re-enter over land, and only the descent module makes a controlled landing. Everything else burns up over the ground track - after over 100 missions there is no record of any part of a Soyuz PAO making it to the ground intact.
Quote from: russianhalo117 on 04/29/2015 01:04 pmWell that info leaves three paths to follow:1) collided with Blok-I because stage burned to depletion and did not perform CCAM2) Progress Prop system over pressurized and exploded3) Progress is spinning so fast that the angular momentum shed debris from the SC.I am not familiar with Blok-I having the capability of a CCAM.I have always been told that separation of Progress from Blok-I was a fairly simple event after Blok-I shuts down.One possibility would be an off-nominal explosive bolt event - if one of the bolts required for separation did not operate correctly, bad things could happen.On another topic who is the designer and manufacturer of the Blok-I control system?
Anybody got any idea where this thing is going to impact?
Apparently in that press briefing Roscosmos chief Komarov reported that the (main?) engine of Progress had depressurized (!), and that telemetry from the spacecraft ceased 1.5 seconds before S/C separation from rocket third stage. He said that because of that docking to ISS is impossible and controlled de-orbit is under consideration.Damn! Source: http://tass.ru/kosmos/1941163