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Model 250
The Rolls-Royce Model 250 engine is the leading powerplant in its class worldwide. First certified at a rating of 317 shp, continuous
improvement programs have increased the latest version’s rating to 715 shp.
Virtually every turbine-powered light helicopter manufacturer produces an aircraft which offers one of the Rolls-Royce Model 250
engines. This fleet of engines has accrued in excess of 180 million fleet flight hours on over 29,000 engines delivered. The Model 250
product line enjoys continued integration of advanced turbine engine technology designed to make the Model 250 the most reliable,
cost effective and durable engine in the world. In addition to the proud heritage of the Model 250, it is backed by a worldwide authorized
repair and overhaul network. Model 250 customers can thus expect professional support anywhere.
Rolls-Royce provides extensive service training for the full range of Model 250 engines. “Hands on” sessions are coupled with selfpaced,
computer-based training, supported by knowledgeable instructors. Our objective is to enable the operator’s personnel to
perform maintenance, inspection, troubleshooting, and ground checkout on the entire family of Model 250 engines.
- Over 180 million fleet flight hours
- Over 29,000 engines delivered
- Continuously improved
- Lowest cost of operation
- Customer Support Center available 24 hours daily
- Model 250 FIRST network of worldwide authorized repair and overhaul centers
Full Authority Digital Engine Control (FADEC)
Description
The C47B/M and C40B represent the
latest innovations in the Model 250
line. Incorporation of Full Authority
Digital Engine Control (FADEC) reduces
pilot workload and enhances overall
safety through improvements in power
turbine governing, and torque and
temperature limiting.
Maintenance costs are reduced with the
incorporation of an automatic starting
routine and over-temperature protection.
Exceedance recording and simplified
troubleshooting are also key benefits.
Features
- Automatic starting with hot start avoidance
- Reduces pilot workload
- Auto-relight
- Auto-transfer to 30 sec OEI (twin engine)
- Selectable torque/temp matching (twin engine)
- Isochronous governing of rotor speed
- Local anticipation and enhanced rotor speed control
- Engine-driven dedicated electrical power source
- Auto-overspeed system check
- Manual backup
Model 250 specifications
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Series II Turboshaft |
Series II Turboprop |
Series IV |
Series IV FADEC |
| Engine model |
C20B/F/J C20R |
B17D B17F |
C30M C30S C30P |
C40B C47B/M |
| Weight |
161 173 |
198 205 |
250 251 251 |
280 274 |
| Airflow at takeoff (lbm/sec) |
3.45 3.82 |
3.58 3.82 |
5.6 5.6 5.6 |
6.1 6.1 |
| Pressure ratio at takeoff |
7.1:1 7.9:1 |
7.2:1 7.9:1 |
8.6:1 8.6:1 8.6:1 |
9.2:1 9.2:1 |
| Takeoff (shp) |
420 450 |
420 450 |
650 650 650 |
715 650 |
| Normal cruise (shp) |
370 380 |
370 380 |
540 501 501 |
613 600 |
| Sfc at takeoff (lb/shp-hr) |
.650 .608 |
.657 .613 |
.592 .592 .592 |
.574 .584 |
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| Tags: |
LM2500, LM 2500 Plus, LM5000, LM6000, Rolls Royce, Model 250, Overseas Aviation |
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 Request A Quote
Overseas Aviation will provide the
most competitive pricing and
complete customer service
satisfaction. We thank you for the
opportunity to quote.
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Contact Overseas Aviation
(561) 392-1292 |
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