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Vous voulez être sûr que vos cadeaux seront sous le sapin de Noël à temps? Nos magasins vous accueillent à bras ouverts. La plupart de nos magasins sont ouverts également les dimanches, vous pouvez vérifier les heures d'ouvertures sur notre site.
- Retrait gratuit dans votre magasin Club
- 7.000.0000 titres dans notre catalogue
- Payer en toute sécurité
- Toujours un magasin près de chez vous
Description
Petropavlovsk was part of the seven-ship unit of the Nikolaev type (project 1134B Berkut), which was a gas-turbine alternative design to the units of the project 1134A. They were classified as large ASW (anti-submarine warfare), although they matched cruisers in size. The primary task of these ships was to search and destroy nuclear submarines in the oceanic zone, in particular, strategic missile submarines.
Due to the requirement of high autonomy and long cruising range, the ships were equipped with a new type of engine in the COGOG (Combined gas or gas) system. It was comprised of two gas turbine units driving two separate shaft lines. Each of the two units consisted of two peak power turbines (20 000 HP each) with a one-speed reduction gear and one sustained turbine (5000 HP) with a two-speed reduction gear. The advantage of the gas turbine was its shorter activation time and greater acceleration. It was also assumed that it would be smaller and more economical than the traditional steam turbine. In fact, it turned out to be a complicated and expensive construction, and, more importantly, quite unreliable.
Due to the requirement of high autonomy and long cruising range, the ships were equipped with a new type of engine in the COGOG (Combined gas or gas) system. It was comprised of two gas turbine units driving two separate shaft lines. Each of the two units consisted of two peak power turbines (20 000 HP each) with a one-speed reduction gear and one sustained turbine (5000 HP) with a two-speed reduction gear. The advantage of the gas turbine was its shorter activation time and greater acceleration. It was also assumed that it would be smaller and more economical than the traditional steam turbine. In fact, it turned out to be a complicated and expensive construction, and, more importantly, quite unreliable.
Spécifications
Parties prenantes
- Auteur(s) :
- Editeur:
Contenu
- Nombre de pages :
- 16
- Langue:
- Anglais
- Collection :
- Tome:
- n° 7074
Caractéristiques
- EAN:
- 9788366148352
- Date de parution :
- 12-06-19
- Format:
- Livre broché
- Format numérique:
- Trade paperback (VS)
- Dimensions :
- 203 mm x 295 mm
- Poids :
- 136 g
