Launch delayed: looks like there's a problem with SES-4! (Sirius FM-6 and SES-4 are both of the LS-1300 model by SS/L)
Preparations for next Proton LV takeoff resumes at Baikonurhttp://www.interfax.ru/russia/news.asp?id=319561 (On Russian)
Briz-M upper stage was delivered to Baikonur cosmodrome todayhttp://www.khrunichev.ru/main.php?id=1&nid=2861 (On Russian)
Can someone confirm that the rocket to be used is #935-35 that was damaged late last year while being transported for the Satmex-6 launch campaign? Thanks!
Quote from: Galactic Penguin SST on 10/17/2013 03:59 pmCan someone confirm that the rocket to be used is #935-35 that was damaged late last year while being transported for the Satmex-6 launch campaign? Thanks!Yes, this is 8K82KM Proton-M/Briz-M (93535/99542).
Quote from: Satori on 10/17/2013 04:32 pmQuote from: Galactic Penguin SST on 10/17/2013 03:59 pmCan someone confirm that the rocket to be used is #935-35 that was damaged late last year while being transported for the Satmex-6 launch campaign? Thanks!Yes, this is 8K82KM Proton-M/Briz-M (93535/99542).So what is flying on 8K82KM Proton-M/Briz-M (93540/?) as it was originally scheduled for SES-6?
This may be the first orbital launch in three weeks or so, since another Proton M orbited Astra 2E. An odd interval that could see "back to back" Proton launches from the same pad listed on the world-wide launch log. - Ed Kyle
I was told that the launch is delayed to October 21st due to problems with Briz-M upper stage and there is possibility of returning of rocket from the launch pad to the assembly-testing facility
Quote from: anik on 10/19/2013 11:30 amI was told that the launch is delayed to October 21st due to problems with Briz-M upper stage and there is possibility of returning of rocket from the launch pad to the assembly-testing facilityI am sorry, it was old information. From yesterday, obviously.
Quote from: anik on 10/19/2013 05:35 pmQuote from: anik on 10/19/2013 11:30 amI was told that the launch is delayed to October 21st due to problems with Briz-M upper stage and there is possibility of returning of rocket from the launch pad to the assembly-testing facilityI am sorry, it was old information. From yesterday, obviously.Now I am confused.Although it is old information that the launch is delayed, is that also wrong information?
From NK: The issue was discussed yesterday with a potential for delaying the launch, but it was decided to launch on-time.
Quote from: Galactic Penguin SST on 10/19/2013 05:49 pmFrom NK: The issue was discussed yesterday with a potential for delaying the launch, but it was decided to launch on-time.Even though there is an issue with the Briz-M? ?
K0610/13 - ATS ROUTE SEGMENTS CLSD: 1. A113 TIROK-GISIR FM 30 KM TO 65 KM 2. B822 LUGER-BETIK FM 38 KM TO 73 KM SFC/UNL. SFC - UNL, DAILY 1800/1900, 20 OCT 18:00 2013 UNTIL 21 OCT 19:00 2013. CREATED: 17 OCT 05:09 2013
P5864/13 - ATS RTE SEGMENTS CLSD: A814 ARNUL - ADOBA B206 ARNUL - AKTAS G489 TELRU - AKTAS. SFC - UNL, 21 OCT 18:00 2013 UNTIL 21 OCT 19:00 2013. CREATED: 20 OCT 08:13 2013 P5853/13 - RESTRICTED AREA ACT: UNR1238. SFC - UNL, DAILY 1800-1900, 20 OCT 18:00 2013 UNTIL 21 OCT 19:00 2013. CREATED: 19 OCT 04:25 2013
A4610/13 - THE RUSSIAN FEDERAL SPACE AGENCY HAS PLANNED A MISSILE LAUNCH. DEBRIS FROM THIS LAUNCH WILL FALL WITHIN AN AREA BOUNDED BY 2515N/16000E 2600N/16045E 2330N/16335E 2245N/16248E BACK TO THE POINT OF ORIGIN. IN THE INTEREST OF SAFETY ALL NON-PARTICIPATING AIR TRAFFIC ARE ADVISED TO AVOID THE NOTAMED AREA. IFR AIRCRAFT UNDER ATC JURISDICTION SHOULD ANTICIPATE CLEARANCE AROUND THE NOTAMED AREA. SFC - UNL, 1800-1930 DAILY, 20 OCT 18:00 2013 UNTIL 23 OCT 19:30 2013. CREATED: 18 OCT 13:36 2013
Hi all!I´m confused... ILS-Launch´ webpage says "LIFTOFF".(http://www.ilslaunch.com/)Any ideas, what´s going on? Possibly a "time-problem"?greetings...Soeren
No Jennifer!
As always, let's all try and get a really nice launch image for the article (which will go on at launch).
End of the first Briz-M burn...
We are getting near the point where the Briz-M has failed in the past, sometimes due to the main engine plumbing failing
We are getting near the point where the Briz-M has failed in the past, sometimes due to the main engine plumbing failing.There *are* 4 FGB-class auxiliary thrusters pointed in the right direction, but these are plumbed to the main prop tank, apparently, these are connected to a smaller "high pressure" prop tank. Since these are fired to provide acceleration for the start of the main engine firing, I suspect that they are required to have higher than normal pressure in the prop tanks (with "normal" being the tank pressure when the thrusters are used at ISS).I would imagine that if Briz fires multiple times, these auxiliary propulsion prop tanks are pretty much empty by the end of the mission; otherwise, they could be used to provide a little extra delta-V as verniers.
2nd Briz-M burn completed: lasted 1039s for 1066s nominal
Quote from: input~2 on 10/25/2013 07:44 pm2nd Briz-M burn completed: lasted 1039s for 1066s nominalWhy does it often seem to burn under the nominal length, I have noticed this before?
Quote from: Danderman on 10/25/2013 08:34 pmWe are getting near the point where the Briz-M has failed in the past, sometimes due to the main engine plumbing failing.There *are* 4 FGB-class auxiliary thrusters pointed in the right direction, but these are plumbed to the main prop tank, apparently, these are connected to a smaller "high pressure" prop tank. Since these are fired to provide acceleration for the start of the main engine firing, I suspect that they are required to have higher than normal pressure in the prop tanks (with "normal" being the tank pressure when the thrusters are used at ISS).I would imagine that if Briz fires multiple times, these auxiliary propulsion prop tanks are pretty much empty by the end of the mission; otherwise, they could be used to provide a little extra delta-V as verniers.There is no "auxiliary propulsion prop tank". The 11D458 engines take their propellant in the same tanks as S5.98M main engine.
The Briz-M (Breeze-M) upper stage is the Phase III variant, a recent upgrade which utilizes two new high-pressure tanks (80 liters) to replace six smaller tanks
Exact launch time is 18:08:53.957 UTC.Quote from: Danderman on 10/25/2013 08:34 pmWe are getting near the point where the Briz-M has failed in the past, sometimes due to the main engine plumbing failingExactly! How do you think what will be this time? Your thoughts are very important!
Quote from: Nicolas PILLET on 10/25/2013 09:47 pmQuote from: Danderman on 10/25/2013 08:34 pmWe are getting near the point where the Briz-M has failed in the past, sometimes due to the main engine plumbing failing.There *are* 4 FGB-class auxiliary thrusters pointed in the right direction, but these are plumbed to the main prop tank, apparently, these are connected to a smaller "high pressure" prop tank. Since these are fired to provide acceleration for the start of the main engine firing, I suspect that they are required to have higher than normal pressure in the prop tanks (with "normal" being the tank pressure when the thrusters are used at ISS).I would imagine that if Briz fires multiple times, these auxiliary propulsion prop tanks are pretty much empty by the end of the mission; otherwise, they could be used to provide a little extra delta-V as verniers.There is no "auxiliary propulsion prop tank". The 11D458 engines take their propellant in the same tanks as S5.98M main engine.I have a dim memory of there being high pressure prop tanks for the auxiliary thrusters. Actually, it's more than a dim memory:http://www.nasaspaceflight.com/2013/03/ils-proton-m-launch-satmex-8/QuoteThe Briz-M (Breeze-M) upper stage is the Phase III variant, a recent upgrade which utilizes two new high-pressure tanks (80 liters) to replace six smaller tanksIf the auxiliary thrusters and the main engine both share the same prop tank(s), why does failure of the main engine result in end of mission? Why can't the four 40 kg thrusters simply fulfill at least part of the remaining mission?
The Breeze M is then delivered to Building 44 in Area 31, the propellant fueling hall, where MMH and N2O4 are loaded in the high pressure tanks of the low-thrust settling/attitude control system thrusters.Proton Launch System Mission Planner’s Guide, LKEB-9812-1990 Revision 7, July 2009
[NAVAREA Navigational Warnings] NORTH PACIFICNO.13-0792 Date:2013/10/23 12 UTCNORTH PACIFIC, WESTERN PART.DANGEROUS TO NAVIGATION AREA DESIGNATEDDUE TO ROCKET CARRIER ELEMENTS FALL.1800Z TO 1930Z DAILY 25 TO 28 OCT.IN ELLIPSE SHAPED AREA CENTERED IN24-23N 161-46E. LARGE AXIS 216 MILES ANDSMALL AXIS 59.4 MILES. AZIMUTH OF LARGEAXIS 134 DEGREES.CANCEL THIS MSG 282030Z OCT
Anyone has the "second delivery" date for this Proton-M ?I think our discussion about high pressure tanks of Briz-M should be transfered to the thread dedicated to Briz-M, since it is very interesting, and still unsolved ! :-) (anik, are you reading me ?)
