# Proton-K / Blok D

> model of carrier rocket

**Wikidata**: [Q20578252](https://www.wikidata.org/wiki/Q20578252)  
**Source**: https://4ort.xyz/entity/proton-k-blok-d

## Summary
The Proton-K / Blok D is a Russian carrier rocket model derived from the Proton-K class, which originated in the Soviet Union. It functions as a specialized variant for launching payloads into space, contributing to Russia's spaceflight capabilities. As a subclass of the Proton-K, it retains core design elements while incorporating distinct configurations.

## Key Facts
- **Parent Class**: Proton-K, a Russian/Soviet carrier rocket family.
- **Alias**: Proton K/D.
- **Classification**: Rocket model and subclass of Proton-K.
- **Origin**: Developed in Russia, with roots in the Soviet space program.
- **Wikipedia Presence**: Documented in 2 language editions (Galician, Latvian).
- **Technical Context**: Designed for space payload delivery, though specific performance metrics are not detailed in provided sources.

## FAQs
### Q: What is the Proton-K / Blok D used for?
A: The Proton-K / Blok D is a specialized carrier rocket model used for launching payloads into space, supporting Russian and formerly Soviet space missions.

### Q: Who developed the Proton-K / Blok D?
A: It was developed in Russia, building on the legacy of the Soviet-era Proton-K rocket family.

### Q: Is the Proton-K / Blok D still in active use?
A: The provided sources do not specify its current operational status, focusing instead on its classification and historical context.

## Why It Matters
The Proton-K / Blok D holds significance as part of the broader Proton-K rocket family, a cornerstone of Soviet and Russian space infrastructure. While specific mission details are not provided, its role as a specialized carrier rocket underscores its contribution to space exploration and payload deployment. As a derivative of the Proton-K—a rocket with 17 documented sitelinks and a long history—the Proton-K / Blok D reflects advancements in launch vehicle design tailored to specific mission requirements. Its existence highlights the adaptability of the Proton-K platform, enabling customized solutions for spaceflight needs.

## Notable For
- **Heritage**: Direct lineage from the Soviet-designed Proton-K rocket family.
- **Specialization**: Represents a distinct model variant (Blok D) within the Proton-K series.
- **Alias Recognition**: Known alternatively as Proton K/D, indicating potential configuration differences.
- **Cultural Documentation**: Featured in Galician and Latvian Wikipedia editions, reflecting international interest.

## Body
### Classification
The Proton-K / Blok D is classified as a rocket model and subclass of the Proton-K, a Russian/Soviet carrier rocket. It is not a standalone system but a specialized iteration within the Proton-K family.

### Development
Originating from the Soviet Union and later maintained by Russia, the Proton-K / Blok D emerged as part of efforts to expand the Proton-K's versatility. Its development reflects the evolution of Soviet and Russian space technology.

### Specifications
Detailed technical specifications (e.g., payload capacity, launch history) are not provided in the source material. Its primary documented features include its alias (Proton K/D), classification, and relationship to the broader Proton-K program.

### Context
The rocket’s significance is tied to its role in the Proton-K ecosystem, which has been extensively documented across 17 sitelinks. The Proton-K / Blok D’s own documentation, while limited to 2 language editions, positions it as a notable yet specialized component of Russian space infrastructure.