Napier Naiad

Naiad
Napier Naiad at the Science Museum (London).
Type	Turboprop aero engine
Manufacturer	D. Napier & Son

The Napier Naiad is a British turboprop gas-turbine engine designed and built by D. Napier & Son in the late 1940s. It was the company's first gas turbine engine. A twin version known as the Coupled Naiad was developed but both engine projects were cancelled before finding a market. ^[1] The Naiad was also used, in adapted form, in the Napier Nomad turbo-compound engine design.

Applications

• Avro Lincoln – Test bed only

Engines on display

A Napier Naiad is on display at the Science Museum, London. ^[2]

Specifications (Naiad)

Data fromFlight ^[3]

General characteristics

• Type: Turboprop engine
• Length: 102 in (2,600 mm)
• Diameter: 28 in (710 mm)
• Dry weight: 1,095 lb (497 kg)

Components

• Compressor: 12-stage axial
• Combustors: 5 chambers
• Turbine: 2-stage (18,250 rpm)

Performance

• Maximum power output: 1,500 shp (1,100 kW) plus 241 lbf (1.07 kN) residual thrust
• Overall pressure ratio: 5.5:1
• Air mass flow: 17.2 lb/s (7.8 kg/s)
• Fuel consumption: 96.2 US gal/h (364 L/h; 101.2 L/ks)
• Thrust-to-weight ratio: 1.37 shp/lb (2.25 kW/kg)

See also

Related development

• Napier Eland
• Napier Nomad

Comparable engines

• Armstrong Siddeley Mamba
• Armstrong Siddeley Double Mamba

Related lists

• List of aircraft engines

References

Notes

1. Gunston 1989, p.106.
2. Science Museum Wiki page - Napier Naiad Archived 7 January 2009 at the Wayback Machine Retrieved: 28 July 2009
3. Flightglobal archive - Flight - September 1947 Retrieved: 28 July 2009

Bibliography

• Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN   1-85260-163-9

External links

• Cutaway drawing of Napier Naiad
• "Napier Naiad" a 1948 Flight article