HARDWARE / PRODUCTUpdated 24 Jul 2026

Transition Compartment

Glavkosmos
Transition Compartment

The Transition Compartment is a structural component for launch vehicles, designed to ensure the docking of the space head with the previous stage block and the installation of the head fairing.

Key figurescomparable across the catalogue

Mass
345 kg

Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.

As published by the supplier

Purpose
Design and manufacture of transition compartments to ensure the docking of the space head with the block of the previous stage and the installation of the head fairing.
Flight qualification of the product
Yes
Brief history of flight qualification
Transition compartment for use with HF (Ø 4110 mm, length 11433 mm) and LV "Soyuz-2". Adapter compartment for use with the AMGE production facility (Ø 4100 mm, length 10400 mm or 11350 mm) and Zenit LV.
Possibility to adapt the product to customer requirements
Yes
Transition compartment 14c227
Ø 3715 mm, length 8450 mm or 10400 mm
Adapter compartment rbfstm
Ø 4110 mm, length 11433 mm
Rbfzt adapter compartment
Ø 4100 mm, length 10400 mm or 11350 mm
Mass of tc
345/ 465/ 390 kg

About

The Transition Compartment is a crucial structural element for launch vehicles, serving the primary purpose of ensuring the secure docking of the space head with the block of the previous stage. Additionally, it facilitates the installation of the head fairing, which protects the payload during ascent. The product has flight qualification, with a history of use including a transition compartment (Ø 4110 mm, length 11433 mm) for the Soyuz-2 launch vehicle and an adapter compartment (Ø 4100 mm, length 10400 mm or 11350 mm) for the Zenit LV, used with the AMGE production facility. The manufacturer offers the possibility to adapt the product to specific customer requirements, allowing for customization in dimensions and other parameters. Available configurations include a transition compartment 14C227 with dimensions of Ø 3715 mm and a length of either 8450 mm or 10400 mm, an adapter compartment RBFSTM with Ø 4110 mm and a length of 11433 mm, and an RBFZT adapter compartment with Ø 4100 mm and a length of 10400 mm or 11350 mm. The mass of the transition compartment varies, with listed values of 345 kg, 465 kg, and 390 kg, depending on the specific configuration.

Documentation

No public datasheet yet — request the datasheet / ICD from the supplier.

Source: trade.glavkosmos.com ↗

The rest of the range from Glavkosmos

All 200 products →