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Harris Aero Ha. 209 'Owl' Light Airliner

Built for the Weightworks competition.



The Ha. 209 sports 2 engines and 9 passenger seats, hence the name. It is equipped with minimal instrumentation and equipment, lacking even a radio, to save on cost and weight. Despite this, the aircraft has proven itself reliable and tough, with performance just adequate enough to keep it serving for much longer than it ought to.

Characteristics and Specifications:

Endurance: 110 minutes at cruise speed
Range: 175 Mi. at cruise speed
Cruise Speed: 100 MpH (70% throttle, 0.75 prop pitch)
Maximum Speed: 113 MpH (100% throttle, 0.75 prop pitch)

Crew: 2
Pax: 9
Fuel: 703.125L
Powerplant: x2 3-cylinder naturally aspirated diesel engines
Propeller: x2 2-blade Variable Pitch
Dimensions (L-W-H): 9.5m - 12.75m - 3m
Weight (Fully Loaded): 3330.5 kg

Start Guide:
1. Fuel pump ON
2. Eng 1 fuel valve ON
3. Hold Eng 1 starter for approx 3/4 of a second
4. Repeat steps 2 and 3 for Eng 2
5. Handbrake release

Take-Off Guide:
1. Check prop pitch is 0.6
2. Full throttle
3. Wait for 45 MpH, then pitch forward onto the main wheels
4. Wait until 60 MpH, then rotate gently off the ground

After Take-Off Guide:
1. Prop pitch to 0.75 and throttle to 70%
2. Climb to desired height for cruise
3. Activate Stabiliser
4. Make sure to actively steer the aircraft, the stabiliser is ONLY for the pitch axis

SAFETY NOTICE, PLEASE READ
Due to the nature of the aircraft, when just taking off the aircraft has a tendency to pitch up quickly. Be ready to counteract this immediately, or risk a stall.