|Country of origin||Soviet Union|
|Operator||Soviet space program|
|Applications||Carry cosmonauts around the Moon and back to Earth|
|Derivatives||LK-700, TKS spacecraft|
The LK-1 had its origin in several early 1960s spacecraft projects under the generic names of kosmoplans and raketoplans.
It would be launched on a three-stage Proton launch vehicle. The first flight was planned for 1967.
Further developments came as the LK-700 direct-descent lunar lander program.
The spacecraft consisted of the following modules:
- ADU Emergency Engine Unit
- VA Capsule (crew module)
- PAB Equipment-Rocket System Block (service module)
- RB Translunar Injection Stage
- Crew Size: 2
- Spacecraft delta v: 3,300 m/s
- Electric System: 2.00 average kW.
- Gross mass: 17,000 kg
- Un-fuelled mass: 4,000 kg
- Height: 5.20 m
- Span: 7.27 m