HUNGARIAN GLIDERS
1933-2000
Type designation: M-20 (R-01)
Name: EMESE-B and C
Designer: Ernő RUBIK and Endre JANCSÓ
Class: Training
General arrangement: Strutted high wing, open cockpit, wire braced frame fuselage (B), traditional tail unit
Crew: 1
First flight: Spring, 1936
Manufacturer: MSrE (Technical University's Sportflying Society) workshop
Number of built: 1



Short history:
In 1934 the MSrE decided to develop a new training glider with improved performance to substitute the Hol's der Teufel. It was designated M-20, however as training gliders of that era were classed as B category gliders the nickname EMESE B stuck to it (EMESE is the Hungarian pronunciation of acronym MSrE).
The EMESE B had been crashed in 1937 and its pilot was compelled by the Aero Club to redesign the glider with a steel-tube structure fuselage. The wings of the EMESE B were attached to the plywood covered new fuselage. This version got the name of EMESE C. First flight took place in the autumn of 1937.

Structure:  All wooden (B), wooden with steel tube truss girder fuselage (C).
   Wing:
The double spar wing had streamlined 'V' struts. The wing in front of the fore spar was covered by plywood and behind by fabric.
   Fuselage:
The fore part of the fuselage consisted of a strong wooden keel and a plywood/fabric covered open nacelle. Behind the wing trailing edge the fuselage was a wire braced flat open frame.
   Tail unit:
The traditionally arranged tail unit was covered by fabric.


  EMESE-B

Larger picture


  EMESE-C

Larger picture
Dimensions (EMESE-B):
   Wing:
     Span, m: 12,56
     Area, m2: 17,6
     Aspect ratio: 8,96
     Chord (root), m: 1,5
     Chord (tip), m: 1,35
     Airfoil (root), m: 12%n
     Airfoil (mid-span), m: 12%
     Airfoil (tip), m: ?
     Dihedral, degree: -
     Sweep, degree: 0
     Washout: Aerodynamic
   Aileron:
     Span, m: 3,44
     Mean chord, m: 0,66
     Total area, m2: 4,54
     Balancing: None
   Flap:
     Type: None
   Airbrakes:
     Type: None
   Horizontal stabilizer:
     Span, m: 2,47
     Area, m2: ?
   Elevator:
     Span, m: 2,47
     Area, m2: ?
     Airfoil: ?
     Balancing: None
     Trim: None
   Vertical stabilizer and rudder:
     Total area, m2: ?
     Rudder area, m2: ?
     Balancing: None
   Fuselage:
     Length, m: 6,25
     Width, m: 0,6
     Height: 1,27
     Cross section, m2: ?
   Landing gear:
     Type: Skid with rubber rings
Masses:
   Wing, kg: ?
   Fuselage, kg: ?
   Tail unit, kg: ?
   Empty glider, kg: 120
   Gross, kg: 210
   Ballast, kg: None
   Wing loading, kg/m2: 12
Speeds:
   VNE, km/h: ?
   Max. speed with open airbrakes, km/h: -
   Max. aerotow speed, km/h: -
   Max. winch speed, km/h: ?
   Max. speed in rough air, km/h: ?
   Stall speed, km/h: ?
Performance:
   Min. sink, m/s (at gliding speed, km/h): 0,8/?
   Best L/D (at gliding speed, km/h): 17/?
Start methods: Bungee, Winch

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