Proton (UR-500)
The original UR-500, later named Proton, was the two-stage first configuration of the Soviet heavy launch vehicle. Its 1965–1966 flight-test program launched the Proton 1, Proton 2, and Proton 3 scientific satellites and established the clustered hypergolic architecture from which the three-stage Proton-K was developed.
Follow this vehicle family
Future launches and major activity directly linked to this vehicle family.
Identity
- Aliases
- UR-5008K82Two-stage Proton
- Family Name
- Proton
- Full Name
- Proton (UR-500)
- Status
- retired
- Type
- rocket
- Variant Name
- UR-500
Details
- Description
- The original UR-500, later named Proton, was the two-stage first configuration of the Soviet heavy launch vehicle. Its 1965–1966 flight-test program launched the Proton 1, Proton 2, and Proton 3 scientific satellites and established the clustered hypergolic architecture from which the three-stage Proton-K was developed.
- First Flight Year
- 1,965
- Last Flight Year
- 1,966
- Operator
- Parent Vehicle Family
- Propulsion Configurations
- Entries
- Nested value
- Nested value
- Name
- UR-500 (8K82) original two-stage configuration
- Notes
- Exact original Proton second-stage engine block documented by KBKhA: three RD-0208 main engines plus one RD-0209 tank-pressurization companion engine.
- Rocket Specs
- Reusability
- expendable
- Stages Count
- 2
Links
Assets & Meta
- Creation Time
- July 14, 2026 at 17:02:26 UTC
- Updated Time
- August 15, 2026 at 17:41:34 UTC
- Image
- Download
Other
- Search Name
- Proton (UR-500) UR-500 8K82 Two-stage Proton