Main Menu

Akaflieg Darmstadt D-39

 

 Darnst-36-01
 
This unique single-seat powered sailplane, created by the Darmstadt Akaflieg, looks exactly like a Standard Class high-performance sailplane except for its low-mounted wing. It features a retractable two-blade folding propeller, driven by twin Fichtel & Sachs modified KM 914V engines situated in the nose cone.
 
The D-39 is an adaptation of the basic D-38 airframe, having the same glassfibre/balsa sandwich construction with ailerons of glassfibre/Klegecel foam sandwich, and Schempp-Hirth airbrakes on the upper wing surfaces. No flaps are fitted. It is equipped with a manually-retractable sprung monowheel, and accommodation comprises a semi-reclining seat under a flush canopy, the rear section of which is detachable.
 
The D-39 first flew on 28 June 1979.

 

akafliegdarmstadtd-39


Engine: Limbach 68 PS            
Wing span: 17.5m
Wing area: 13.4sq.m            
Empty Weight: 438kg
Gross Weight: 563kg                
Wing Load: 40kg/sq.m
Aspect ratio: 22.9                
Airfoil: FX 61-184
Structure: GFRP                
L/DMax: 37 @ 100 kph
MinSink: 0.70 m/s @ 87 kph         
No. of Seats: 1
No. Built: 1

 

D-39
Engines: 2 x Fichtel & Sachs KM 914V, 35 kW (47 hp)
Wing span: 15.0 m / 49 ft 2 in
Length: 7.15 m / 23 ft 5.5 in
Height: 1.02 m / 3 ft 4.5 in
Wing area: 11.0 sq.m / 118.4 sq ft
Wing section: Wortmann FX-61 -184/60-126
Aspect ratio: 20.5
Empty weight: 280 kg / 617 lb
Max weight: 400 kg / 882 lb
Water ballast: None
Max wing loading: 36.3 kg/sq.m / 7.43 lb/sq ft
Max speed: 135 kt / 250 km/h
Stalling speed: 39 kt / 72 km/h
Min sinking speed: 1.0 m/sec / 3.3 ft/sec
Best glide ratio: 36 at 56.5 kt / 105 km/h
T-O run: 200 m / 656 ft
Rate of climb at S/L: 240 m/min / 787 ft/min
Range: 500 km / 269 nm
 
 Darnst-36-02

 

 

 

 


Copyright © 2018 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.