8D715P
8D715P is the Kosberg RD0108 LOX/kerosene liquid rocket engine developed by OKB-154 (JSC KBKhA) for the 11A57 Voskhod Block I third stage. KBKhA lists 30.38 tf vacuum thrust (normalized here to 297.9 kN), 326 s specific impulse, and production at Factory No. 154 (VMZ); NASA dates its first use to 1963. This historical model remains distinct from the RD-0109/8D719 engine used on the earlier Block Ye stage.
Identity
- Aliases
- 8D715PRD-0108RD0108Kosberg 8D715PKosberg RD0108
- Domains
- spaceflight
- Identity Level
- model
- Kind
- liquid-rocket-engine
- Name
- 8D715P
- Status
- historical
Details
- Description
- 8D715P is the Kosberg RD0108 LOX/kerosene liquid rocket engine developed by OKB-154 (JSC KBKhA) for the 11A57 Voskhod Block I third stage. KBKhA lists 30.38 tf vacuum thrust (normalized here to 297.9 kN), 326 s specific impulse, and production at Factory No. 154 (VMZ); NASA dates its first use to 1963. This historical model remains distinct from the RD-0109/8D719 engine used on the earlier Block Ye stage.
- Developers
- Manufacturers
- Propellants
- liquid oxygenkerosene
- Rocket Specs
- Cycle
- gas-generator
- Vacuum Specific Impulse S
- 326
- Vacuum Thrust Kn
- 297.9
Links
Assets & Meta
- Creation Time
- July 29, 2026 at 08:05:02 UTC
- Updated Time
- August 23, 2026 at 01:40:53 UTC
Other
- Sources
- Accessed Date
- 2026-08-21
- Note
- JSC KBKhA identifies RD0108 as the third-stage engine for the 11A57 Voskhod, names OKB-154/JSC KBKhA as the development site and Factory No. 154/VMZ as the production site, and reports 30.38 tf vacuum thrust, 326 s specific impulse, and liquid oxygen/kerosene propellants. The thrust is normalized to 297.9 kN; the generator-gas description supports the gas-generator cycle field.
- Publisher
- JSC KBKhA
- Title
- RD0108
- Accessed Date
- 2026-08-21
- Note
- NASA dates the uprated 8D715P's first use to the three-stage 11A57 Voskhod launch vehicle in 1963 and describes the underlying Kosberg oxygen-kerosene engine and generator-gas turbopump arrangement.
- Publisher
- NASA History Division
- Title
- Rockets and People, Volume III