Pipistrel Sinus 503 User Manual

44
SINUS motorglider
www.pipistrel.si
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45
SINUS motorglider
www.pipistrel.si
REV. 0
Cruise
Cruising at MTOM using 75% engine power in ICAO standard atmosphere at an elevation of 500 me-
ters (1650 feet) with aps set to negative position, Sinus ultralight motorglider will provide you with
cruise performance as follows:
SINUS Model 503 Model 582 Model 912
cruise airspeed (BAM2 prop.) 150 km/h (80kts) 160 km/h (87 kts) 180 km/h (100 kts)
Cruise speed may vary depending on the cruise altitude, gross weight and propeller pitch
setting.
Descent
The rate of descent and by that descent glide path is adjusted using spoilers.
Typical sink rate, with aps set to 2
nd
position and spoilers fully extended, measures
2,5 m/s (500 fpm) at 90 km/h (48 kts) and 4,0 m/sec (800 fpm) at 115 km/h (62 kts).
SINUS Model 503 Model 582 Model 912
max. sink rate, spoilers extended 5,5 m/sec
(1100 fpm)
5,5 m/sec
(1100 fpm)
5,5 m/sec
(1100 fpm)
The glide
The glide is dened as unpowered rightened ight at speed providing best lift over drag ratio or
minimum sink rate.
Should the engine become inoperative in ight, as a result of either intended or unintended action,
and it cannot be restarted, react as follows:
establish rightened ight at the speed providing best lift over drag ratio, if you desire to over-
come greatest distance at reach from initial altitude.
establish rightened ight at speed providing minimum sink rate, if you desire do stay airborne
the longest. This may come in handy in case you will be forced to give way to other aircraft or if you
simply need time to determine the most appropriate site to land out on.
SINUS Model 503 Model 582 Model 912
minimum sink speed 90 km/h (48 kts) 90 km/h (48 kts) 90 km/h (48 kts)
minimum sink rate (BAM2 prop.) 1,24 m/s (205 fpm) 1,24 m/s (205 fpm) 1,24 m/s (205 fpm)
minumum sink rate (VARIO prop.) 1,02 m/s (204 fpm) 1,02 m/s (204 fpm) 1,02 m/s (204 fpm)
best lift/drag ratio speed 95 km/h (51 kts) 95 km/h (51 kts) 95 km/h (51 kts)
best lift/drag ratio (BAM 2 prop.) 1:23 1:23 1:22
best lift/drag ratio (VARIO prop.) 1:30 1:30 1:29
L/D ratio at 150 km/h (80 kts) 1:18 1:18 1:18
CAUTION: When the engine fails, especially in climb, the aircraft always loses some 20 meters
(65 feet) of altitude before pilots manage to establish rightened unpowered ight.
Performance

Pipistrel Sinus 503 Specifications

General

Brand	Pipistrel
Model	Sinus 503
Category	Aircrafts
Language	English