Bristol Siddeley Orpheus
Historical Bristol Siddeley Orpheus single-spool turbojet family developed for light fighter and trainer applications, including the Folland Gnat and Fiat G.91. The canonical row preserves the engine identity and application boundary without collapsing its multiple Orpheus marks into one unsupported thrust figure.
Identity
- Aliases
- OrpheusBristol OrpheusBOr.4
- Domains
- aviation
- Identity Level
- family
- Kind
- turbojet
- Name
- Bristol Siddeley Orpheus
- Status
- historical
Details
- Description
- Historical Bristol Siddeley Orpheus single-spool turbojet family developed for light fighter and trainer applications, including the Folland Gnat and Fiat G.91. The canonical row preserves the engine identity and application boundary without collapsing its multiple Orpheus marks into one unsupported thrust figure.
Links
Assets & Meta
- Creation Time
- August 15, 2026 at 00:10:42 UTC
- Updated Time
- August 15, 2026 at 00:10:42 UTC
Other
- Sources
- Accessed Date
- 2026-08-14
- Note
- The Science Museum Group catalogues a Bristol Siddeley Orpheus turbojet engine, B.Or 4 Mk 10101, made in 1960–61, as an aircraft-propulsion artifact.
- Publisher
- Science Museum Group
- Title
- Bristol Siddeley Orpheus Turbojet Engine
- Accessed Date
- 2026-08-14
- Note
- The university museum identifies Orpheus as a single-spool turbojet, records Bristol Siddeley's 1953 development, and notes the BOr.1 150-hour approval test at 14.6 kN.
- Publisher
- Museo Storico dei Motori e dei Meccanismi, University of Palermo
- Title
- FIAT — Bristol Siddeley Orpheus 803
- Accessed Date
- 2026-08-14
- Note
- The museum identifies a Bristol Siddeley Orpheus used in the Folland Gnat, supporting the light-fighter/trainer application boundary.
- Publisher
- Midland Air Museum
- Title
- Exhibits
- Accessed Date
- 2026-08-14
- Note
- The RAF Museum collection list preserves Bristol Siddeley Orpheus 701 as an aircraft engine artifact.
- Publisher
- Royal Air Force Museum
- Title
- Engine collections and Orpheus 701 record