Lanceurs : Angara

Comme il en était question dans Air & cosmos, le site d'A Zak précise que le nouveau lanceur Angara sera mis en service en 2011 à partir de Plesetsk

http://www.russianspaceweb.com/angara.html

Justement, bien que le reportage date du mois de février, voici qq photos du chantier du futur pas de tir "Angara" à Plesetsk :

http://www.novosti-kosmonavtiki.ru/content/photogallery/gallery_112/index.shtml

Essais du premier étage en 2008 ...


http://www.space-travel.com/reports/Russian_Space_Launch_Vehicle_Firing_Tests_Set_For_2008_999.html

Essai des moteurs :

http://www.space-travel.com/reports/Russia_Tests_Engine_For_Angara_Carrier_Rocket_999.html

http://www.space-travel.com/reports/Russian_Rockets_Circa_2008_Part_Two_999.html

Des nouvelles :

http://www.spacedaily.com/reports/Russia_To_Test_Flight_New_Generation_Space_Rocket_In_2010_999.html

http://www.space-travel.com/reports/New_Impulse_To_Russian_Rockets_999.html

Citation :

New Impulse To Russian Rockets

Moscow (RIA Novosti) Sep 15, 2008
Russian space launch vehicles are winning even more popularity with potential customers, as domestic engine developers have managed to create a versatile re-useable liquid-propellant engine, bringing to life an old dream of the world's rocket engineers.

The Energomash Science and Production Association has developed the new RD-191 rocket engine, meant to equip Angara advanced carrier rockets, ready for mass production.

Why is this development unique? The high cost of putting a payload into space has always been a headache for launch customers. Huge and expensive multistage rockets are burnt up in just one launch.

For decades Russian and Western engine building specialists have been wrestling with the problem of developing a re-useable rocket engine which could be brought back to Earth for further use after having worked its portion of flight.

The oxygen-kerosene RD-191 is a further development of the RD-170-180 family. RD-180s are exported to the United States, where they are widely used to equip American-made Atlas carrier rockets.

The RD-191 is a highly versatile engine, capable of working in two modes, both as first-stage and second-stage engine. Russian engineers added a limited amount of hydrogen to the oxygen-kerosene fuel, and managed to achieve simultaneous and stable combustion of all the three components.

The new engine was originally developed as a re-useable one. When other engines are used, the burnt-out stages fall down to Earth, posing a serious threat both to the ecology of the impact areas and people's lives. The RD-191's recoverability and repeated use will cut payload deployment costs several times over.

To be fair, it should be said that the Americans were the first to demonstrate the feasibility of a re-useable liquid-fuel rocket engine. In the mid 1990's, a small Delta Clipper single-stage rocket lifted off the launch pad and successfully returned.

However, the Americans decided to exploit their success, joining forces with Russia. Between 1994 and 1995, Energomash specialists worked on a joint program to develop a re-useable rocket engine. Soon, however, the U.S. waived Russian services, and classified all work in the field.

Boeing was working on a multi-billion dollar Space Launch Initiative (SLI) program to develop an advanced re-usable launch vehicle. Simultaneously, NASA tendered development of a next generation re-useable carrier rocket. The European Space Agency also tried to develop re-usable engines. However, neither NASA nor the ESA seem to have obtained any significant results.

In the near future, Russia is likely to have a variety of Angara carrier rockets fitted with RD-191 engines, capable of deploying payloads of between 1.5 and 30 tons in low earth orbit.

Therefore, the global launch services market can count on Russia for the next few decades.

The opinions expressed in this article are the author's and do not necessarily represent those of RIA Novosti.

Source: RIA Novosti

Patrick R7 a écrit:

http.... developing a re-useable rocket engine
....

The RD-191 is a highly versatile engine, capable of working in two modes, both as first-stage and second-stage engine. ....

....
The new engine was originally developed as a re-useable one. ....

capable of deploying payloads of between 1.5 and 30 tons in low earth orbit......

]

s'ils arrivent à mettre en place ces différents éléments, cela en fairait des lanceurs d'avenir

Patrick R7 a écrit:

http.... developing a re-useable rocket engine
....

The RD-191 is a highly versatile engine, capable of working in two modes, both as first-stage and second-stage engine. ....

....
The new engine was originally developed as a re-useable one. ....

capable of deploying payloads of between 1.5 and 30 tons in low earth orbit......

Dominique M. a écrit:

s'ils arrivent à mettre en place ces différents éléments, cela en fairait des lanceurs d'avenir

Il y a longtemps que les russes (enfin, une certaine partie de la recherche spatiale russe) cherche à imposer un lanceur modulaire capable de couvrir les trois niveaux (léger, moyen et lourd) de lanceurs à partir d'un nombre d'éléments restreints.
Les évènements économico-politiques de ces derniers lustres n'ont pas joué en leur faveur mais la sagesse et le bon sens l'emportera, j'en suis convaincu.

"Russia could delay maiden launch of Angara rocket"
http://en.rian.ru/russia/20091118/156889970.html

Sur Interfax, ils sont plus catégoriques
"Launch Of New Angara Rocket Delayed By A Year"

Je me pose la question, au travers de ton lien, en voyant les beautés sibériennes pourquoi certains Russes préfèrent aller se réchauffer en Guyane alors qu'ils ont tout ce qu'il faut sur place ?

On ne peut pas dire que les projets contemporains se développent à grande vitesse.

Voici 10 ans (1999), je présentais la gamme Angara (remaniée) aux industriels du programme Ariane.

Ce lanceur, exploitable suivant le concept EELV (modulaire), visait le remplacement de lanceurs allant du Cosmos au Proton.

Je te joins l'extrait de la panoplie présentée à l'époque avec un premier vol prévu aux alentours de 2004.

Lenine a écrit:

Je me pose la question, au travers de ton lien, en voyant les beautés sibériennes pourquoi certains Russes préfèrent aller se réchauffer en Guyane alors qu'ils ont tout ce qu'il faut sur place ?

Choisir entre la forêt sibérienne et guyannaise... elles ont chacune leur charme et leurs dangers j'imagine

Angara-1.2 sur le pas de tir



et décollage ...




Angara-5 sur le pas de tir



et décollage ...




Deux autres vidéos concernant les lanceurs Angara:

Très belles images !