Napier
Eland Engine
The
Eland series of gas turbine engines were a 1950s product of D Napier & Son
Limited. It was originally a small diameter single shaft turboprop which first
ran in 1952, type tested in 1956 and flight tested in the Vickers Varsity,
Airspeed ambassador and Convair 340 and 440 transports. The Eland E.211
designated for production versions of the Westland Westminster was an
adaption of the Eland 504 model specifically designed for helicopter
operations. it featured a mechanically driven rotor system. It differed from
the 5-4 in having the reduction gear removed and a rear drive through an
hydraulic coupling, first used on the Napier Eland NEl.7.
The
Westminster prototypes had basically similar Eland E.229 and E.229A
engines.
Details
of the E.211:
|
Diameter |
36 ins |
(91.6 cm) |
|
Length |
125 ins |
(343 cm) |
|
Frontal Area |
7.1 sq ft |
(0.66 sq m) |
|
Dry Weight |
1,418 lb without output shaft and coupling. |
(643 kg) |
|
Maximum Take Off Rating |
3,590 shp plus 570 lb (259 kg) net jet thrust at 12,500
rpm (3,810 hp) |
|
|
One Hopur Rating |
2,920 shp plus 530 lb (240 kg) net jet thrust at 12,500 rpm
(3,125 hp) |
|
|
Maximum Continuous Rating |
2,720 shp plus 520 lb (236 kg) net jet thrust at 12,500
rpm (2,920 hp) |
|
|
Maximum Take Off Rating |
3,590 shp plus 570 lb (240 kg) net jet thrust at 12,500
rpm (3,810 hp) |
|
|
Fuel Consumption At Maximum Take-off Output |
0.60 lb per ehp/hr |
(0.270 kg per ehp/hr) |
|
Fuel Consumption At One Hour Rating |
0.63 lb per ehp/hr |
(0.285 kg per ehp/hr) |
|
Fuel Consumption At Maximum Continuous Rating |
0.645 lb per ehp/hr |
(0.293 kg per ehp/hr) |
|
Oil Consumption Per Hour |
1 pint per hr |
(0.57 kg litres) |
The
first Eland E.211, earmarked to power the production Westminster
helicopters.
Click on the image to see a larger photograph.
© Chris Young 2003
Feedback please to: ctyoung57@yahoo.com