alexander schleichers ask 21mi - svenska segelflygförbundet · balancing of rotating masses •...

Alexander Alexander SchleichersSchleichers

Simply autonomous.

ASK 21MiASK 21Mi

Overview

Target

Concept

Technical Data

Power-Plant

Airframe

Features

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

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

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

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)

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

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)

Features: Complete Engine Controls onboth seats

Features: Steerable Nose Wheel

Questions..?

ASG 29