Author Topic: Information about Zenit rocket  (Read 53494 times)

Offline Prober

  • Senior Member
  • *****
  • Posts: 10313
  • Save the spin....I'm keeping you honest!
  • Nevada
  • Liked: 700
  • Likes Given: 728
Re: Zenit Rocket
« Reply #20 on: 11/23/2011 03:27 PM »
http://www.npoenergomash.ru/about/news/news2_304.html
Energomash announced the shipment of two RD 171 engines to Yuzhmash - #162 for the Federal program and #163 for Sea Launch.  Can anyone track these to the vehicle serials?

It says RD171M which is the enhanced version

What does the RD171M give you?
2017 - Everything Old is New Again.
I have not failed. I've just found 10,000 ways that won't work. ~ by Thomas Alva Edison

Online Stan Black

  • Senior Member
  • *****
  • Posts: 2871
  • Liked: 130
  • Likes Given: 99
Re: Zenit Rocket
« Reply #21 on: 11/23/2011 04:41 PM »
« Last Edit: 11/23/2011 06:01 PM by Stan Black »

Offline Danderman

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 9600
  • Liked: 356
  • Likes Given: 460
Re: Information about Zenit rocket
« Reply #22 on: 11/25/2011 10:09 PM »
The 5% increase is merely a reference to the engine being tested successfully at 105% of nominal thrust. The big improvement for the RD-171M is that it has a mass of a few hundred kg less than the standard variant, and also a .5 second enhancement in ISP.

Offline baldusi

  • Senior Member
  • *****
  • Posts: 7437
  • Buenos Aires, Argentina
  • Liked: 1442
  • Likes Given: 4499
Re: Information about Zenit rocket
« Reply #23 on: 11/26/2011 02:26 PM »
The 5% increase is merely a reference to the engine being tested successfully at 105% of nominal thrust. The big improvement for the RD-171M is that it has a mass of a few hundred kg less than the standard variant, and also a .5 second enhancement in ISP.
And shares 70% of the RD-180 parts. The RD-170/1 to RD-180 was a lot different. They even used different injectors. So the RD-171M is an implementation of the RD-180 in an RD-171. Originally, it was the RD-173 project, which was supposed to have an extra 5% thrust. Since the only use was the Zenit, they went for the same thrust at less weight, in the RD-171M.

Offline Nicolas PILLET

  • Member
  • Senior Member
  • *****
  • Posts: 2258
  • Gien, France
    • Kosmonavtika
  • Liked: 417
  • Likes Given: 52
Re: Information about Zenit rocket
« Reply #24 on: 01/17/2012 03:30 PM »
Maybe I am the last on this forum to discover this fact : on july 27th, 1991, there was a launch attempt of a Zenit-2 launch vehicle. This flight would have been the Return To Flight of the Zenit after the october 1990 dramatic failure.

But it was cancelled and the rocket returned to Dnepropetrovsk...

Quote
Шестнадцатый пуск 27 июля 1991 г. не состоялся из-за незапуска двигателя первой ступени, в результате за несколько секунд до старта система управления прекратила набор готовностей и возвратилась в исходное состояние. Месячный разбор привел к решению вернуть этот экземпляр ракеты на завод-изготовитель - в НПО "Южное".

http://www.buran.ru/htm/gubanov3.htm
« Last Edit: 01/17/2012 03:33 PM by Nicolas PILLET »
Nicolas PILLET
Kosmonavtika : The French site on Russian Space

Online Stan Black

  • Senior Member
  • *****
  • Posts: 2871
  • Liked: 130
  • Likes Given: 99
Re: Information about Zenit rocket
« Reply #25 on: 01/17/2012 04:05 PM »
Maybe I am the last on this forum to discover this fact : on july 27th, 1991, there was a launch attempt of a Zenit-2 launch vehicle. This flight would have been the Return To Flight of the Zenit after the october 1990 dramatic failure.

But it was cancelled and the rocket returned to Dnepropetrovsk...

Quote
Шестнадцатый пуск 27 июля 1991 г. не состоялся из-за незапуска двигателя первой ступени, в результате за несколько секунд до старта система управления прекратила набор готовностей и возвратилась в исходное состояние. Месячный разбор привел к решению вернуть этот экземпляр ракеты на завод-изготовитель - в НПО "Южное".

http://www.buran.ru/htm/gubanov3.htm

Quote from: Вован
2. 24.07.1991 за 11 минут до пуска при выполнении операции ОПУСТИТЬ СТРЕЛУ стрела ТУА задела за кабель-мачту, что привело к кратковременной расстыковке электроразъемов Бутан между РН и кабель-мачтой и сбою вычислительных машин борта и "наземки". Причина был разрегулирован механизм сопряжения ТУА и блока разъемов кабель-мачты. Пуск перенесен на август, но и там ракете не повезло: произошла авария двигателя второй ступени.

http://www.novosti-kosmonavtiki.ru/phpBB2/viewtopic.php?t=10582

Offline hkultala

  • Full Member
  • ****
  • Posts: 807
  • Liked: 295
  • Likes Given: 247
Re: Information about Zenit rocket
« Reply #26 on: 02/18/2012 07:54 PM »
Does the zenit second stage really have 2 different engines?

Rd-120 and RD-8 ?

If yes, How are they located physically?

RD-120 is about 10 times bigger than RD-8?

Online Stan Black

  • Senior Member
  • *****
  • Posts: 2871
  • Liked: 130
  • Likes Given: 99
Re: Information about Zenit rocket
« Reply #27 on: 02/18/2012 08:14 PM »
Does the zenit second stage really have 2 different engines?

Rd-120 and RD-8 ?

If yes, How are they located physically?

RD-120 is about 10 times bigger than RD-8?

RD-8

http://www.yuzhnoye.com

RD-120
http://www.npoenergomash.ru

Offline kirghizstan

  • Full Member
  • ****
  • Posts: 664
  • Liked: 139
  • Likes Given: 74
Re: Information about Zenit rocket
« Reply #28 on: 02/18/2012 08:26 PM »
Does the zenit second stage really have 2 different engines?

Rd-120 and RD-8 ?

If yes, How are they located physically?

RD-120 is about 10 times bigger than RD-8?

RD-8

http://www.yuzhnoye.com

RD-120
http://www.npoenergomash.ru

does anyone find it odd that energomash website has the buron in their banner?  why wouldn't they use something that flew more than 1 time

Online Stan Black

  • Senior Member
  • *****
  • Posts: 2871
  • Liked: 130
  • Likes Given: 99
Re: Information about Zenit rocket
« Reply #29 on: 02/18/2012 08:36 PM »
does anyone find it odd that energomash website has the buron in their banner?  why wouldn't they use something that flew more than 1 time

Energia flew twice
« Last Edit: 02/18/2012 08:41 PM by Stan Black »

Offline kirghizstan

  • Full Member
  • ****
  • Posts: 664
  • Liked: 139
  • Likes Given: 74
Re: Information about Zenit rocket
« Reply #30 on: 02/18/2012 08:40 PM »
does anyone find it odd that energomash website has the buron in their banner?  why wouldn't they use something that flew more than 1 time

Energia flew twice each featuring four RD-0120
ok twice but you see my point. couldn't they offer a better option for the banner

Offline baldusi

  • Senior Member
  • *****
  • Posts: 7437
  • Buenos Aires, Argentina
  • Liked: 1442
  • Likes Given: 4499
Re: Information about Zenit rocket
« Reply #31 on: 03/13/2012 07:24 PM »
Jeff Foust just tweeted from Satellite 2012 conference:
https://twitter.com/#!/jeff_foust/status/179623695084564481

Quote
Sea Launch planning upgrades to the Zenit-3SL that will increase capacity to 6400 kg and then 6700 kg to GTO. #satellite2012

Any info on how do they plan to do that? Does that involve the Fregat-SB, for example?

Offline synchrotron

  • Member
  • Full Member
  • **
  • Posts: 299
  • Liked: 5
  • Likes Given: 13
Re: Information about Zenit rocket
« Reply #32 on: 03/13/2012 07:46 PM »
Is there any information available for the payload accommodation on the Zenit-2 upper stage prior to the advent of Sealaunch? I seem to remember seeing a truss structure diagram at one point, but I cannot recall where.

Offline Danderman

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 9600
  • Liked: 356
  • Likes Given: 460
Re: Information about Zenit rocket
« Reply #33 on: 03/14/2012 01:36 PM »
Jeff Foust just tweeted from Satellite 2012 conference:
https://twitter.com/#!/jeff_foust/status/179623695084564481

Quote
Sea Launch planning upgrades to the Zenit-3SL that will increase capacity to 6400 kg and then 6700 kg to GTO. #satellite2012

Any info on how do they plan to do that? Does that involve the Fregat-SB, for example?

Energia is planning to complete the transition to the "03" variant of the Blok-DM, which includes a less powerful, but more efficient main engine - RD-58MF - larger prop tanks, and possibly a return to use of sintin propellant.

The "03" version was flown once, but the larger prop tanks were overfilled, and the flight ended up in the Pacific, as a result.
« Last Edit: 03/14/2012 01:37 PM by Danderman »

Offline sammie

  • Veteran
  • Full Member
  • ****
  • Posts: 553
  • Liked: 1
  • Likes Given: 0
Re: Information about Zenit rocket
« Reply #34 on: 03/14/2012 02:49 PM »
Quote
use of sintin propellant

Wonder if they would reintroduce Sintin with the Soyuz as well. Should be interesting. I couldn't quite find how large of an improvement it would bring
"The dreams ain't broken downhere, they're just walking with a limp"

Offline baldusi

  • Senior Member
  • *****
  • Posts: 7437
  • Buenos Aires, Argentina
  • Liked: 1442
  • Likes Given: 4499
Re: Information about Zenit rocket
« Reply #35 on: 03/14/2012 03:01 PM »
I've seen that Energomash has been presenting lots of papers on synthetic additives to RG-1. Among other things, it would lower the pressure losses on the cooling side of things. So I wouldn't discard sintin, but may be they are thinking of some new additives. Plus, the RD-171M could be pushed to 105% easily. But the Zenit already has a lot of T/W and is very long for it's width. So I guess we should wait and see.

Offline Danderman

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 9600
  • Liked: 356
  • Likes Given: 460
Re: Information about Zenit rocket
« Reply #36 on: 03/14/2012 05:16 PM »
Quote
use of sintin propellant

Wonder if they would reintroduce Sintin with the Soyuz as well. Should be interesting. I couldn't quite find how large of an improvement it would bring

It completely depends on which stage is going to fly with sintin.

Offline Prober

  • Senior Member
  • *****
  • Posts: 10313
  • Save the spin....I'm keeping you honest!
  • Nevada
  • Liked: 700
  • Likes Given: 728
Re: Information about Zenit rocket
« Reply #37 on: 03/14/2012 06:33 PM »
surprised they are even messing with  the Zenit.   It works fine, why mess with a good thing?

Thought the new line was going to be from the Soyuz?

2017 - Everything Old is New Again.
I have not failed. I've just found 10,000 ways that won't work. ~ by Thomas Alva Edison

Offline baldusi

  • Senior Member
  • *****
  • Posts: 7437
  • Buenos Aires, Argentina
  • Liked: 1442
  • Likes Given: 4499
Re: Information about Zenit rocket
« Reply #38 on: 03/14/2012 07:34 PM »
surprised they are even messing with  the Zenit.   It works fine, why mess with a good thing?

Thought the new line was going to be from the Soyuz?
Because the heavy satellites that Sea Launch caters are moving towards 6.5tonnes. And the Proton-M has already been uprated to 6.35tonnes, and moving towards 6.5. So they have to keep competitive or loose prospects.

Online Stan Black

  • Senior Member
  • *****
  • Posts: 2871
  • Liked: 130
  • Likes Given: 99
Re: Information about Zenit rocket
« Reply #39 on: 02/21/2013 05:04 PM »
Zenit for Elektro-L №3

Quote
 Изготовление и поставка ракеты-носителя Зенит-М (Зенит-2SБ) для запуска КА Электро-Л №3
http://www.zakupki.gov.ru/pgz/public/action/orders/info/common_info/show?notificationId=5498434

Tags: