HUNGARIAN GLIDERS
1933-2000
Type designation: M-30C/1
Name: Fergeteg
Designer: Designers of the Hungarian Aeronautical Association
Class: High performance
General arrangement: Shoulder wing, tandem seats, retractable wheel, traditional tail unit
Crew: 2
First flight: May 1953
Manufacturer: Central Workshop of Hungarian Aeronautical Association, Dunakeszi
Number of built: 2



Short history:
This M-30C/1 version had been built simultaneously with the M-30C and first flew in May 1953.

Structure:  All wooden
   Wing:
The structure of the M-30C/1 was similar to that of the M-30C, however no flaps were fitted and the one-piece, aerodynamically balanced slotted ailerons were of Frise-type.
   Fuselage:
Similarly to the M-30C, the cross section of the fore part of the fuselage had been increased to make the cockpit more comfortable and the after part of the fuselage had been modified as well to accomodate the new horizontal stabilizer. A new, one-piece canopy, opening sideways, was fitted.
   Tail unit:
The tail unit had a traditional arrangement. A larger rudder - compared to the M-30B - was fitted and the conventional horizontal stabilizer-elevator unit was sitting on a console placed on the top of the fuselage.



Larger picture | Larger picture


Dimensions:
   Wing:
     Span, m: 18
     Area, m2: 18,96
     Aspect ratio: 17,1
     Chord (root), m: 1,4
     Chord (tip), m: 0,35
     Airfoil (root), m: NACA 23012
     Airfoil (mid-span), m: NACA 23012
     Airfoil (tip), m: NACA 0009
     Dihedral, degree: 3
     Sweep, degree: -0,23/-1,9
     Washout: Aerodynamic and -2 degree geometric
   Aileron:
     Span, m: 4,12
     Mean chord, m: 0,3
     Total area, m2: ?
     Balancing: Inner mass
   Flap:
     Type: None
   Airbrakes:
     Type: Göppingen
     Position (upside/downside): u/d
     Total area, m2: 0,46
     Position, % of chord: 0,458
   Horizontal stabilizer:
     Span, m: 2,55
     Area, m2: 1,47
   Elevator:
     Span, m: 2,55
     Area, m2: 0,7
     Airfoil: NACA 0009
     Balancing: Mass
     Trim: Yes
   Vertical stabilizer and rudder:
     Total area, m2: 1,3
     Rudder area, m2: 0,7
     Balancing: None
   Fuselage:
     Length, m: 7,95
     Width, m: 0,6
     Height: 1,07
     Cross section, m2: 0,5
   Landing gear:
     Type: Retractable
     Wheel diameter, m: 0,42
Masses:
   Wing, kg: ?
   Fuselage, kg: ?
   Tail unit, kg: ?
   Empty glider, kg: 385
   Gross, kg: 550
   Ballast, kg: -
   Wing loading, kg/m2: 29,0
Speeds:
   VNE, km/h: 250
   Max. speed with open airbrakes, km/h: 250
   Max. aerotow speed, km/h: 130
   Max. winch speed, km/h: 100
   Max. speed in rough air, km/h: ?
   Stall speed, km/h: 75
Performance:
   Min. sink, m/s (at gliding speed, km/h): 0,95/88
   Best L/D (at gliding speed, km/h): 27/95
Start methods: Winch, Aerotow



Origin of data and 3-view drawing:
Jereb Gábor: Magyar vitorlázó repülőgépek, Műszaki Könyvkiadó, 1988, Budapest
(Gábor JEREB: Hungarian Gliders, Technical Publishing House, 1988, Budapest)

Gábor FEKECS E-mail: fekecs.gabor@t-online.hu