# Blok-DM-SLB

> Russian upper stage and space tug

**Wikidata**: [Q112682731](https://www.wikidata.org/wiki/Q112682731)  
**Source**: https://4ort.xyz/entity/blok-dm-slb

## Summary
Blok-DM-SLB is a Russian upper stage and space tug, part of the Blok D class of upper stages used on Soviet and Russian expendable launch systems. It serves as a spacecraft vehicle designed to transfer payloads from reference orbits to target orbits or interplanetary trajectories.

## Key Facts
- **Instance of**: Space tug, designed to maneuver payloads between orbits or to interplanetary trajectories.
- **Subclass of**: Blok D, a family of upper stages used on Soviet and Russian launch vehicles.
- **GRAU Index**: 11Г58М, the official classification code for the Blok-DM-SLB.
- **Aliases**: Blok-DM-SL-B, an alternative designation for the vehicle.
- **Wikidata Description**: "Russian upper stage and space tug," summarizing its primary function.

## FAQs
### Q: What is the primary function of the Blok-DM-SLB?
A: The Blok-DM-SLB is a Russian upper stage and space tug designed to transfer payloads from a reference orbit to a target orbit or an interplanetary trajectory.

### Q: How does the Blok-DM-SLB differ from other Blok D upper stages?
A: While part of the Blok D family, the Blok-DM-SLB is specifically classified under the GRAU Index 11Г58М and may have distinct operational capabilities tailored for space tug missions.

### Q: What launch systems has the Blok-DM-SLB been used with?
A: The Blok-DM-SLB is part of the Blok D class, which has been used on Soviet and Russian expendable launch systems, though specific launch vehicles are not detailed in the provided source material.

## Why It Matters
The Blok-DM-SLB plays a critical role in Russian space operations by enabling precise orbital maneuvers and interplanetary trajectory adjustments. As a space tug, it extends the utility of payloads launched by Soviet and Russian rockets, allowing for flexible mission profiles. Its inclusion in the Blok D family ensures compatibility with existing launch infrastructure, supporting both military and scientific objectives. The vehicle’s ability to reposition payloads efficiently contributes to the broader goals of space exploration and satellite deployment.

## Notable For
- **Space Tug Capability**: Unlike standard upper stages, the Blok-DM-SLB is explicitly designed for orbital transfer and interplanetary missions.
- **Blok D Integration**: As part of the Blok D class, it benefits from established engineering and operational heritage.
- **GRAU Classification**: The 11Г58М designation highlights its specialized role within the broader Blok D family.

## Body
### Classification and Function
The Blok-DM-SLB is classified under the GRAU Index 11Г58М, indicating its role as a specialized upper stage and space tug. It is part of the Blok D family, which has been used on Soviet and Russian expendable launch systems. The vehicle’s primary function is to transfer payloads from a reference orbit to a target orbit or an interplanetary trajectory, making it a critical component for missions requiring precise orbital adjustments.

### Design and Aliases
The Blok-DM-SLB is also known by the alias Blok-DM-SL-B, reflecting its specialized design for space tug operations. While specific technical details are not provided, its classification suggests advanced propulsion and maneuvering capabilities tailored for orbital and interplanetary missions.

### Historical Context
As part of the Blok D family, the Blok-DM-SLB benefits from decades of development and use in Soviet and Russian space programs. Its inclusion in the Blok D class ensures compatibility with existing launch vehicles, supporting both military and scientific payloads. The vehicle’s role in enabling flexible mission profiles underscores its importance in modern space operations.