# L-3

> cancelled command module and lunar module in the Soviet lunar program

**Wikidata**: [Q12323475](https://www.wikidata.org/wiki/Q12323475)  
**Source**: https://4ort.xyz/entity/l-3

## Summary
L-3 was a cancelled Soviet lunar spacecraft program that included both a command module (Soyuz 7K-LOK) and a lunar lander (LK). It was designed to support crewed missions to the Moon as part of the Soviet lunar program but was never flown due to the cancellation of the N1 launch vehicle.

## Key Facts
- L-3 was the Soviet crewed lunar spacecraft system that included the Soyuz 7K-LOK command module and LK lunar lander
- The program was developed in the Soviet Union during the 1960s and early 1970s
- L-3 was designed to be launched by the N1 super heavy-lift launch vehicle
- The program was cancelled in 1974 along with the N1 rocket program
- L-3 was intended to enable Soviet cosmonauts to orbit the Moon and land on its surface
- The Soyuz 7K-LOK command module was designed to carry two cosmonauts
- The LK lunar lander was designed to carry one cosmonaut to the lunar surface
- L-3 was part of the broader Soviet effort to compete with the American Apollo program
- The program had a sitelink count of 1 and was described in Danish Wikipedia
- L-3 is classified as an abandoned spacecraft model and crewed spacecraft

## FAQs
### Q: What was the L-3 program?
A: L-3 was the Soviet lunar spacecraft program that included both a command module (Soyuz 7K-LOK) and a lunar lander (LK). It was designed to support crewed missions to the Moon but was cancelled in 1974 along with the N1 launch vehicle program.

### Q: Why was the L-3 program cancelled?
A: The L-3 program was cancelled in 1974 due to the failure of the N1 super heavy-lift launch vehicle, which was essential for launching the spacecraft to the Moon. The Soviet Union decided to abandon its crewed lunar program after multiple N1 launch failures.

### Q: What spacecraft were part of the L-3 program?
A: The L-3 program consisted of two main spacecraft: the Soyuz 7K-LOK command module, which would carry two cosmonauts to lunar orbit, and the LK lunar lander, which would carry one cosmonaut to the Moon's surface.

## Why It Matters
L-3 represents the Soviet Union's ambitious attempt to land cosmonauts on the Moon and compete with the United States' Apollo program. Although never flown, the program pushed Soviet aerospace engineering to new heights and resulted in the development of advanced spacecraft technologies. The L-3 program, along with the N1 rocket, demonstrates the intense space race competition of the 1960s and early 1970s. Its cancellation marked the end of the Moon race and the Soviet Union's shift to other space priorities, including space stations. The knowledge gained from L-3 contributed to later Soviet and Russian spacecraft designs, particularly the evolution of the Soyuz spacecraft family.

## Notable For
- Being the Soviet Union's answer to the American Apollo program's lunar missions
- Developing the LK lunar lander, the only lunar lander ever built outside the United States
- Pushing the boundaries of Soviet spacecraft design and engineering capabilities
- Representing the peak of Soviet crewed lunar program ambitions
- Contributing to the evolution of the Soyuz spacecraft family despite its cancellation

## Body
### Program Development
The L-3 program was developed in the 1960s as the Soviet Union's response to the American Apollo program. It was designed to enable Soviet cosmonauts to orbit the Moon and land on its surface, directly competing with NASA's lunar ambitions.

### Spacecraft Components
The L-3 system consisted of two main spacecraft: the Soyuz 7K-LOK command module and the LK lunar lander. The 7K-LOK was based on the proven Soyuz design but modified for lunar missions, while the LK was a purpose-built lunar lander designed to carry a single cosmonaut to the Moon's surface.

### Launch Vehicle
The N1 super heavy-lift launch vehicle was developed specifically to launch the L-3 spacecraft to the Moon. The N1 was a massive rocket comparable to the American Saturn V, but it suffered from multiple launch failures that ultimately led to the cancellation of both the rocket and the L-3 program.

### Cancellation and Legacy
The L-3 program was cancelled in 1974 after the N1 rocket failed to achieve a successful launch. Despite never flying, the program contributed valuable experience to Soviet space engineering and influenced later spacecraft designs. The LK lunar lander and 7K-LOK command module remain as testaments to the Soviet Union's lunar ambitions and engineering capabilities.