# Tsyklon-4

> cancelled Ukrainian expendable launch vehicle

**Wikidata**: [Q925945](https://www.wikidata.org/wiki/Q925945)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Tsyklon-4)  
**Source**: https://4ort.xyz/entity/tsyklon-4

## Summary
Tsyklon-4 is a cancelled Ukrainian expendable launch vehicle that was designed as an advanced version of the Tsyklon-3 rocket. Developed by the Pivdenne Design Office, it never successfully launched and was eventually abandoned as a project.

## Key Facts
- Tsyklon-4 was a cancelled Ukrainian expendable launch vehicle
- It had a launch weight of 198,250 kg and stood 39.95 meters tall with a diameter of 3.00 meters
- The rocket was designed by Pivdenne Design Office, with manufacturing by Pivdenmash for the launch vehicle and Khartron for the control system
- Payload capacities were 5,685 kg to low Earth orbit, 3,910 kg to Sun-synchronous orbit, and 1,600 kg to geostationary transfer orbit
- It was based on the Tsyklon-3 model but was abandoned before any successful launches
- The project was classified as both a rocket model and an abandoned project
- It was part of the broader Tsyklon family of Soviet/Ukrainian expendable launch vehicles

## FAQs
### Q: Why was Tsyklon-4 cancelled?
A: The source material identifies Tsyklon-4 as a cancelled and abandoned project, though it does not specify the exact reasons for its cancellation.

### Q: What was the payload capacity of Tsyklon-4?
A: Tsyklon-4 could carry 5,685 kg to low Earth orbit, 3,910 kg to Sun-synchronous orbit, and 1,600 kg to geostationary transfer orbit.

### Q: How did Tsyklon-4 compare to Tsyklon-3?
A: Tsyklon-4 was based on Tsyklon-3 but was designed as an advanced version with increased payload capacity and modernized systems, including control systems developed by Khartron.

### Q: Who were involved in the development of Tsyklon-4?
A: The rocket was designed by Pivdenne Design Office, with Pivdenmash manufacturing the launch vehicle and Khartron responsible for the control system.

## Why It Matters
Tsyklon-4 represented Ukraine's efforts to maintain and advance its space launch capabilities in the post-Soviet era. As a successor to the Tsyklon-3, it was positioned to enhance Ukraine's position in the global commercial launch market with increased payload capacity and modernized systems. The cancellation of this project underscored the challenges faced by Ukraine in competing with established space powers and sustaining its aerospace industry. Despite its cancellation, Tsyklon-4 remains significant as part of the Tsyklon family lineage, which had a substantial impact on both Soviet and Ukrainian space programs.

## Notable For
- Being a Ukrainian-developed launch vehicle continuing the legacy of the Soviet Tsyklon program
- Having significantly increased payload capacity compared to its predecessor Tsyklon-3
- Featuring modernized control systems developed by Khartron
- Representing an attempt by Ukraine to modernize its space launch capabilities
- Being one of the more advanced rockets in the Tsyklon family before its cancellation

## Body
### Overview
Tsyklon-4 was a Ukrainian expendable launch vehicle designed to be an advanced version of the Tsyklon-3. As part of the broader Tsyklon family, it was classified as both a three-stage-to-orbit and liquid-propellant rocket, though it never successfully launched and was eventually abandoned.

### Technical Specifications
- **Mass**: 198,250 kg (launch weight)
- **Height**: 39.95 meters
- **Diameter**: 3.00 meters
- **Classification**: Three-stage-to-orbit liquid-propellant rocket
- **Instance of**: Rocket model, abandoned project

### Development and Manufacturing
- **Designed by**: Pivdenne Design Office
- **Manufacturers**: 
  - Pivdenmash (launch vehicle)
  - Khartron (control system)
- **Based on**: Tsyklon-3
- **Part of**: Tsyklon (Soviet expendable launch vehicle)

### Payload Capabilities
- Low Earth orbit: 5,685 kg
- Sun-synchronous orbit: 3,910 kg
- Geostationary transfer orbit: 1,600 kg

### Status and Recognition
- **Status**: Cancelled/Abandoned project
- **Country of origin**: Ukraine
- **Wikipedia languages**: Common, English, Spanish, Finnish, French, Hungarian, Indonesian, Korean, Polish, Portuguese
- **Aliases**: Cyclone-4, Tsiklon-4
- **Sitelink count**: 13
- **Associated with**: WikiProject Ukraine

## References

1. [Source](https://space.skyrocket.de/doc_lau_det/tsiklon-4.htm)
2. [Source](https://www.russianspaceweb.com/tsyklon.html)
3. [Source](https://archive.kyivpost.com/article/content/ukraine-politics/ukraine-plans-to-launch-tsyklon-4-rocket-from-braz-49241.html)
4. Freebase Data Dumps. 2013
5. [Source](http://www.astronautix.com/t/tsiklon-4.html)
6. [Source](https://www.seradata.com/tsiklon-4-cyclone-4-rocket-lau/)