Articles of the Month ... for Nov-Dec 2001
[Created 11/23/2001]


This month, Sailplane Builder featured progress articles on two very exciting sailplanes the Manque and the Cepheus (the latter is self-launching).

Also, take a look at the SparrowHawk featured in Sailplane Builder earlier this year:
 
Manque
Link to Manque Website
 

Fully enclosed pilot pod 
Leading Edges: carbon fiber/PVC foam sandwich 
Main Spar: carbon fiber/PVC foam/plywood 
Fuselage Pod Skins: fiberglass/PVC foam 
Seat: carbon fiber/honeycomb/Kevlar 
Boom: carbon fiber skins 

 

Aerodynamic Analysis of the Carbon Dragon Airfoils  Cool technical site by Alejandro Ramirez-Pineiro 
http://airfanalysis.hypermart.net/prj_alejo01.html 


Dimensions & loadings 
Wingspan ... 15 m
Wing surface  ... 15 m2
 Mean chord  ... 1 m
 Aspect ratio  ... 15
 Wing sweep ...  -7 degrees
Fuselage length  ... 6.2 m
 Empty weight ...  71 Kg
 Water ballast (to be evaluated in flight) ...  40 Kg
 
Maximum take off weight  ... 196 Kg
 Pilot and parachute ...  85 Kg
 Glide angle ...  28/1
 Positive load factor ...  + 6.82 g
 Negative load factor  ... - 4.5 g

Contact:
 Alejandro Ramirez-Pineiro at alejoREMOVE@netline.cl
 
 
Cepheus
 Link to Cepheus Website
 

Self launching, pilot power taxi, and rugged 
Fully enclosed pilot pod 
FAR  Part 103 compliant 
Super light wing loadings 
Many precision laser cut parts 
Fast assembly with simple tools 
Kits includes everything to build 
...except builder preference materials and tools 

 
 
Dimensions & Loadings 
Wing Span ...  44 ft. ... 13.39 m
 Wing Area  ... 158 sq ft. ... 14.67 m
 Overall Length  ... 20.83 ft. ...  7.09 m
 Overall Height  ... 8.5 ft.  ... 2.9 m
 Cockpit Width at Hips  ... 24 in. ...  0.67 m
 Wing loading Max. gross ... 2.63 lb. sq. ft.
Min Sink @ 1.31 lb/sq ft  ... @ 32 mph <1.6 fps
Min. Sink @ 2.5 lb/sq ft  ... @ 32 mph <1.8 fps
 Speeds (5 G )
(see site for 4 G limits and metric measures)
Max speed flaps down ...  38 mph
 Max ground or aero tow ... 50 mph
Max rough air Maneuvering (VA)  0 flaps ... 50 mph
 Maximum rough air flaps up (VFEU) ... 55 mph
 Maximum smooth air (Vne) ... 65 mph
Stalling Speed (VS) ... 19 mph
 
Altitude loss in completing one 360o turn ...
 20 ft.  6.09 m 

Contact:
Greg Malm at  serviceREMOVE@glighter.com
 
 



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