Douglas DC-9

For short-range flights Douglas developed the DC-9. The fuselage was stretched three times as the airlines needed more capacity. Production was terminated in favour of the MD-80 after the completion of 976 aircraft.

The model’s small sized wing, its high wing loading and the small wingtip chord are all having influence on its low speed flight characteristics but not at its best. So a well-experienced pilot is required for flying this plane. The installation of gyros on rudder as well as on ailerons is recommended.

Powerplant:    Glow:               two  6.5 cc  (.40 cu.in.)  engines

                           Turbine:          twice  25 N  (5.5 lbs.)  thrust

                           Ducted Fan:   - - -

Specifications:

Span             Length               Wing Area                  Weight

 DC-9-10       1.70 m  (67’’)     1.99 m  (78’’)       35.4 dm²  (549 sq.in.)       6  kg  (13 lbs.)

 DC-9-20       1.78 m  (70’’)     1.99 m  (78’’)       36.3 dm²  (563 sq.in.)       6  kg  (13 lbs.)

 DC-9-30       1.78 m  (70’’)     2.27 m  (89’’)       36.3 dm²  (563 sq.in.)     6.5 kg  (14 lbs.)

 DC-9-40       1.78 m  (70’’)     2.39 m  (94’’)       36.3 dm²  (563 sq.in.)     6.5 kg  (14 lbs.)

 DC-9-50       1.78 m  (70’’)     2.54 m  (100’’)     36.3 dm²  (563 sq.in.)       7  kg  (15 lbs.)

Pics:

(Norbert Rauch)

(Cor Beckers)

(Wolfgang Semler)

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