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Alexander Alexander SchleichersSchleichers
Simply autonomous.
ASK 21MiASK 21Mi
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Overview
Target
Concept
Technical Data
Power-Plant
Airframe
Features
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Target
• Self launching double seater, easy to handle on ground and in the air
• Flight training with instructor and student on their own, requiring no further personal
• Training ranging from basic training to cross-country
• Aiming for clubs as well as for flight schools
• Ratings for retractable engines in a double seater
• Making the ASK 21 workhorse more attractive for cross-country flights and maybe for private owners
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ConceptASK 21 Mi• Abandon Aerobatic Category in exchange higher masses• Insert well-proven fuel injected
power-plant of the ASH 25Mi
• Lightweight design in tailconeand tail fins for c.g.
• Reinforced cockpit for crash-requirements
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Technical DataBasic Data (may be subject to change)
approx. 220kgapprox. 200kgUseful Load
approx. 375kgapprox. 500kgEmpty Mass (average equipment)
600kg705kgMax. Take-off Mass
410kg510kgMax. non lifting components
AerobaticUtilityCategory
280km/h280km/hVNE
26 - 33kg/m²33 - 39kg/m²Wing loading
234 – 469mm234 – 469mmC.G. Range
ASK 21ASK 21MiVariant
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Technical DataData related to Powered Flight (preliminary)
approx. 2,25m/sClimb rate (max mass, sea level)
approx. 500kmRange (max mass, saw tooth)
65,1dB(A)Noise (ICAO Appendix 16, Chapter X)
515mTake-off distance over 15m (max. mass, grass)
270mTake-off roll distance (max. mass, grass)
3minTime to reach 500m GND after take-off
37,3kW (50PS)Power (Start)
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Power-Plant: Rotary engineknown form ASH 26, ASH 25, ASW 22
• Low vibration level due to complete balancing of rotating masses
• Low vibration increases fatigue life andreliability
• Prototype has now 430 starts and • 70 engine hours in club• Fuel injection
Whole Power-plant removable as single unit
Water cooled casingand air cooled rotor
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Airframe• Aluminium fuel tank (less smell) for 23Ltrs• External filler, suitable for customary
fuel station nozzles• Large engine bay for good accessibility• Carbon fibre horizontal fin and Kevlar
vertical fin• Wheels at the wing tips• Large main wheel (380x150-5)
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Features: Complete Engine Controls onboth seats
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Features: Steerable Nose Wheel
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Questions..?
ASG 29