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1361 kg
1610 kg
3,000 lb
3,550 lb
Empty Weight Standard configuration 686 kg 1,517 lb
Useful Load Normal category
External load operations
673 kg
922 kg
1,483 lb
2.033 lb
Usable Fuel Capacity 242 L (64 gal) 183 kg 403 lb
POWER PLANT
Characteristics Metric Imperial
Rolls-Royce Model 250-C20B gas
turbine, Rated power
336 kw 450 shp
De-rated for reliability and safety to
Takeoff power:
Max. continuous power
280 kw
261 kw
375 shp
350 shp
PERFORMANCE SPECIFICATIONS
8
<<<< ROLLS ROYCE 250-C20B >>>>
16000
14000
12000
10000
8000
6000
4000
2000
0
2200 2400 2600 2800 3000 3200 3400 3600
PRESSURE ALTITUDE - FEET
GROSS WEIGHT - POUNDS
THIS CHART BASED ON CABIN HEAT, ENGINE ANTI-ICE OFF, ELECTRICAL LOAD 10 AMPERE, APPLICABLE TO
PARTICLE SEPARATOR (SCAVENGE OFF) OR STANDARD ENGINE AIR INLET
REDUCE WEIGHT:
1. 55LB WITH SCAVENGE ON
2. 40LB WITH MIST ELIMINATOR INSTALLED
INCREASE WEIGHT: 50LB WITH ABRASION STRIPS ON MAIN
ROTOR BLADES ONLY
DECREASE WEIGHT: 50LB WITH ABRASION STRIPS ON TAIL
ROTOR BLADES ONLY
INCREASE (OR DECREASE) WT.
CAPABILITY LBS (ABOVE CRITICAL
ALTITUDE) PER 10 AMP REDUCTION (OR
INCREASE) IN ELECTRICAL LOAD
OAT oC -5 15 35
WTD 1 2 3
- 15o
- 5
5
15
25
35
45
oC ISA+20
ISA
NOT VERIFIED WHEN MAIN ROTOR
BLADES HAVING ABRASION STRIPS
ARE INSTALLED
REDUCE WEIGHT CAPABILITIES lbs AS FOLLOWS:
(APPLICABLE TO ALL TEMPERATURES)
PRESSURE
ALT. FT.
CABIN
HEAT
ANTIICE
BOTH
SL TO 4000
8000
12000
16000
220
152
111
86
232
157
117
89
469
306
227
172
- 25oC
o C O A T
F03-036-1
o
o
o
o
o
o
3.3 Hover-In-Ground-Effect (C20B Engine)
PERFORMANCE SPECIFICATIONS
9
3.4 Hover-Out-of-Ground-Effect (C20B Engine),
PERFORMANCE SPECIFICATIONS
10
3.5 Takeoff Gross Weight Worksheet (C20B Engine)
C20B Mission #1 Mission #2
Empty Weight
1,481 lb
(672 kg)
Pilot
170 lb
(77 kg)
Fuel
403 lb
(183 kg)
Payload
946 lb
(428 kg)
Takeoff GW
3,000 lb
(1361 kg)
PERFORMANCE SPECIFICATIONS
11
3.6 Payload vs Range (5000’, ISA) (C20B Engine)
PERFORMANCE SPECIFICATIONS
12
3.7 Speed for Best Range (C20B Engine)
PERFORMANCE SPECIFICATIONS
13
3.8 Speed for Best Endurance (C20B Engine)
PERFORMANCE SPECIFICATIONS
14
3.9 Fuel Flow, Sea Level, ISA (15°C) (C20B Engine)
Note: Use for Estimates Only. Not FAA Approved. Based on clean aircraft, level flight
performance, minimum specification engine, particle separator and 10 ampere
electrical load.
PERFORMANCE SPECIFICATIONS
15
3.10 Fuel Flow, Sea Level, ISA +20°C (35°C) (C20B Engine)
Note: Use for Estimates Only. Not FAA Approved. Based on clean aircraft, level flight
performance, minimum specification engine, particle separator and 10 ampere
electrical load.
PERFORMANCE SPECIFICATIONS
16
3.11 Fuel Flow, 4,000 feet, ISA (7°C) (C20B Engine)
Note: Use for Estimates Only. Not FAA Approved. Based on clean aircraft, level flight
performance, minimum specification engine, particle separator and 10 ampere
electrical load.
PERFORMANCE SPECIFICATIONS
17
3.12 Fuel Flow, 4,000 feet, ISA +20°C (27°C) (C20B Engine)
Note: Use for Estimates Only. Not FAA Approved. Based on clean aircraft, level flight
performance, minimum specification engine, particle separator and 10 ampere
electrical load.
PERFORMANCE SPECIFICATIONS
18
3.13 Hover-In-Ground-Effect (C20R Engine)
PERFORMANCE SPECIFICATIONS
19
3.14 Hover-Out of-Ground-Effect (C20R Engine)
PERFORMANCE SPECIFICATIONS
20
3.15 Takeoff Gross Weight Worksheet (C20R Engine)
C20R Mission #1 Mission #2
Empty Weight 1,517 lb
(688 kg)
Pilot 170 lb
(77 kg)
Fuel 403 lb
(183 kg)
Payload 910 lb
(413 kg)
Takeoff GW 3,000 lb
(1361 kg)
PERFORMANCE SPECIFICATIONS
21
3.16 Payload vs Range (5000’, ISA) (C20R Engine)
PERFORMANCE SPECIFICATIONS
22
3.17 Speed for Best Range (C20R Engine)
PERFORMANCE SPECIFICATIONS
23
3.18 Speed for Best Endurance (C20R Engine)
PERFORMANCE SPECIFICATIONS
24
3.19 Fuel Flow, Sea Level, ISA (15°C) (C20R Engine)
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MD500 Series TechDescription Feb09(6)
