Napier Nomad Model E.145
The Napier Nomad Model E.145 is a compound aircraft engine combining a two-stroke, horizontally opposed diesel piston engine with a gas turbine and propeller drive. The concept sought exceptionally low fuel consumption for long-range aircraft by combining piston-engine and turbine operation. The Smithsonian identifies its example with the simplified Nomad II development, which appeared in 1951; a Nomad II flew briefly on an Avro Lincoln. Napier ended the programme in 1955 as gas-turbine alternatives became more competitive.
Identity
- Aliases
- Napier Nomad E.145Nomad Model E.145Napier Nomad
- Domains
- aviation
- Identity Level
- variant
- Kind
- combined-cycle
- Name
- Napier Nomad Model E.145
- Status
- historical
Details
- Description
- The Napier Nomad Model E.145 is a compound aircraft engine combining a two-stroke, horizontally opposed diesel piston engine with a gas turbine and propeller drive. The concept sought exceptionally low fuel consumption for long-range aircraft by combining piston-engine and turbine operation. The Smithsonian identifies its example with the simplified Nomad II development, which appeared in 1951; a Nomad II flew briefly on an Avro Lincoln. Napier ended the programme in 1955 as gas-turbine alternatives became more competitive.
- Piston Specs
- Configuration
- horizontally-opposed
- Cylinder Count
- 12
- Displacement
- …
- Max Power
- …
Links
Assets & Meta
- Creation Time
- August 7, 2026 at 06:02:35 UTC
- Updated Time
- October 17, 2026 at 12:27:52 UTC
Other
- Sources
- Accessed Date
- 2026-08-07
- Note
- The Smithsonian identifies the exact Model E.145, its compound two-stroke diesel/gas-turbine architecture, 2,271 kW rating, 41.1 L displacement, and 12-cylinder horizontally-opposed configuration.
- Publisher
- Smithsonian National Air and Space Museum
- Title
- Napier Nomad Model E. 145 Horizontally-Opposed Diesel Engine
- Accessed Date
- 2026-08-07
- Note
- The Smithsonian collection-media record independently preserves the Nomad Model E.145 technical category and power data without implying a vehicle relationship.
- Publisher
- Smithsonian National Air and Space Museum
- Title
- Napier Nomad Model E. 145 collection media