Discus viimaseni viimistletud,ootan veel uut spinnerit ja siis on ok,lihtsalt valge spinner ,valgete labadega,valgel lennukil .....................
Motocalc ütleb:
MotOpinion - Discus Cs - perfect
24m above Sea Level, 101,3kPa, 14,8°C
Motor: ROXXY BL C35-48-05; 830rpm/V; 2,2A no-load; 0,034 Ohms.
Battery: Kokam 3200SHD 18 (18C); 3 cells; 3200mAh @ 3,7V; 0,008 Ohms/cell.
Speed Control: Aveox H160C/CM; 0,0057 Ohms; High rate.
Drive System: Aero Naut 14x7; 14x7 (Pconst=1,06; Tconst=0,995) direct drive.
Airframe: Discus CS Roxxy + LIPO; 54,8dm²; 1650g; 30,1g/dm²; Cd=0,037; Cl=0,45; Clopt=0,65; Clmax=1,12.
Stats: 242 W/kg in; 181 W/kg out; 6,8m/s stall; 8,9m/s opt @ 51% (61:36, 29°C); 10,8m/s level @ 60% (50:31, 32°C); 7,63m/s @ 58,9°; -0,64m/s @ -4,1°.
Power System Notes:
The full-throttle motor current at the best lift-to-drag ratio airspeed (38,2A) falls approximately between the motor's maximum efficiency current (25,4A) and its current at theoretical maximum output (147,7A), thus making effective use of the motor.
Aerodynamic Notes:
The static pitch speed (19,2m/s) is within the range of approximately 2,5 to 3 times the model's stall speed (6,8m/s), which is considered ideal for good performance.
With a wing loading of 30,1g/dm², a model of this size will have very sedate flying characteristics. It will be suitable for relaxed flying, in calm or very light wind conditions.
The static thrust (2014g) to weight (1650g) ratio is 1,22:1, which will result in extremely short take-off runs, no difficulty taking off from grass surfaces (assuming sufficiently large wheels), and vertical climb-outs. This model will probably be able to perform a hover or torque roll.
At the best lift-to-drag ratio airspeed, the excess-thrust (1372g) to weight (1650g) ratio is 0,83:1, which will give very steep climbs and incredible acceleration. This model can easily do consecutive loops, and has sufficient in-flight thrust for any aerobatic maneuver.
General Notes:
This analysis is based on calculations that take motor heating effects into account.
These calculations are based on mathematical models that may not account for all limitations of the components used. Always consult the power system component manufacturers to ensure that no limits (current, rpm, etc.) are being exceeded.
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