# Interkosmos 3

> former Soviet ionospheric research satellite

**Wikidata**: [Q1097417](https://www.wikidata.org/wiki/Q1097417)  
**Source**: https://4ort.xyz/entity/interkosmos-3

## Summary
Interkosmos 3 was a Soviet ionospheric research satellite launched on August 7, 1970, as part of the Interkosmos program. It was designed to study Earth's ionosphere and operated until its atmospheric re-entry on December 6, 1970. The satellite weighed 340 kilograms and was part of the Dnepropetrovsk Sputnik family.

## Key Facts
- **Launch Date**: August 7, 1970, at 02:59:53 UTC from Kapustin Yar.
- **Mass**: 340 kilograms.
- **Operator**: Interkosmos.
- **Manufacturer**: Pivdenne Design Office.
- **Launch Vehicle**: Kosmos-2I.
- **Spacecraft Bus**: DS-U2.
- **Country of Origin**: Soviet Union.
- **COSPAR ID**: 1970-057A.
- **Deorbit Date**: December 6, 1970.
- **Aliases**: DS-U2-IK-1, Intercosmos 3, DS-U2-IK No. 1, DS-U2-IK #1, IK-3.
- **Part of**: Dnepropetrovsk Sputnik family.

## FAQs
### Q: What was the purpose of Interkosmos 3?
A: Interkosmos 3 was a Soviet ionospheric research satellite designed to study Earth's ionosphere, a critical layer of the atmosphere that affects radio communications and satellite operations.

### Q: Who launched Interkosmos 3?
A: Interkosmos 3 was launched by the Soviet Union on August 7, 1970, from Kapustin Yar using a Kosmos-2I rocket.

### Q: How long did Interkosmos 3 operate?
A: Interkosmos 3 operated until its atmospheric re-entry on December 6, 1970, a total of about 11 weeks.

### Q: What was the significance of the Interkosmos program?
A: The Interkosmos program was a collaborative effort between the Soviet Union and other Eastern Bloc countries to conduct scientific research in space, particularly in ionospheric studies.

### Q: What was the spacecraft bus used for Interkosmos 3?
A: Interkosmos 3 used the DS-U2 spacecraft bus, which was a standardized platform for Soviet ionospheric research satellites.

## Why It Matters
Interkosmos 3 played a crucial role in advancing ionospheric research, contributing to our understanding of Earth's upper atmosphere. The satellite's data helped scientists analyze the ionosphere's structure, dynamics, and interactions with solar radiation, which are essential for improving radio communications, satellite navigation, and space weather forecasting. As part of the Interkosmos program, it also facilitated international collaboration in space science, demonstrating the Soviet Union's commitment to sharing scientific knowledge with other countries. Despite its short operational lifespan, Interkosmos 3 provided valuable insights that continue to influence modern space research.

## Notable For
- **First in Class**: One of the earliest satellites in the DC-U2-IK class, designed specifically for ionospheric studies.
- **International Collaboration**: Operated under the Interkosmos program, which involved joint Soviet-Eastern Bloc research efforts.
- **Short but Impactful Mission**: Despite its brief operational period, it contributed significant data to ionospheric research.
- **Standardized Design**: Built on the DS-U2 spacecraft bus, a common platform for Soviet ionospheric satellites.
- **Precise Launch**: Launched at 02:59:53 UTC, demonstrating the Soviet Union's precision in orbital mechanics.

## Body
### Overview
Interkosmos 3 was a Soviet ionospheric research satellite launched on August 7, 1970, as part of the Interkosmos program. It was designed to study Earth's ionosphere, a region of the atmosphere that plays a crucial role in radio communications and satellite operations. The satellite was part of the Dnepropetrovsk Sputnik family and was operated by Interkosmos, a collaborative program involving the Soviet Union and other Eastern Bloc countries.

### Technical Specifications
- **Mass**: 340 kilograms.
- **Spacecraft Bus**: DS-U2.
- **Launch Vehicle**: Kosmos-2I.
- **Launch Site**: Kapustin Yar.
- **COSPAR ID**: 1970-057A.

### Mission Details
- **Launch Date**: August 7, 1970, at 02:59:53 UTC.
- **Deorbit Date**: December 6, 1970.
- **Operational Duration**: Approximately 11 weeks.
- **Primary Objective**: To study the ionosphere, including its structure, dynamics, and interactions with solar radiation.

### Significance
Interkosmos 3 was significant for its contribution to ionospheric research, which is essential for understanding and mitigating the effects of space weather on technology and communications. The satellite's data helped scientists develop models and improve predictions related to the ionosphere. Additionally, its participation in the Interkosmos program highlighted the Soviet Union's commitment to international scientific collaboration in space exploration. Despite its short operational lifespan, Interkosmos 3 provided valuable insights that continue to inform modern space research.

## References

1. Jonathan's Space Report
2. [Source](https://space.skyrocket.de/doc_sdat/interkosmos-3.htm)
3. [Source](https://www.n2yo.com/satellite/?s=04482)