Z-37A Čmelák 1/72 SCALE PLASTIC KIT ProfiPACK
#7097
INTRO Agricultural use of the aircraft become a common practice after the WWII, as many suitable aircraft were available and the aerial spreading or spraying of fertilizers, seeds, or pesticides was found quite effective. It was no wonder the aircraft manufacturers were finally asked to build agricultural specials to get even more efficiency. Representatives of the countries of the CMEA (Council for Mutual Economic Assistance) organization uniting the states of the former Soviet bloc, also set requirements for the development of an agricultural aircraft to be used by all CMEA member countries. The development was assigned to Czechoslovakia in 1960. The new aircraft had to take off and land on very short unpaved areas and it also had to have good handling when flying at minimum altitudes of about 16ft (5m) above the ground. The design also needed to be very tough, resistant to rough handling and wear due to high numbers of takeoffs and landings. At the same time, the aircraft had to be easy to maintain and resistant to various chemicals. Birth of the Bumblebee Two companies supplied the committee with their preliminary designs. The first, Středočeské strojírny (formerly Letov) prepared the design of the XZ-36, the second, Moravan Otrokovice, developed the XZ-37 design. The latter was chosen as the winner and the design team of Let Kunovice also took part in the development, tasked with the wing design. Due to the nature of typical operations, great attention was paid to the flight characteristics at stall speeds. While stall performance was originally found unsatisfactory, fixed slots on outer parts of the leading edge and in front of the flaps brought performance to an acceptable level. The design team led by Svatopluk Zámečník and Miroslav Langer intended to use a new in-line M-441 engine, which was still in development at the time. However, the project was cancelled, so it was necessary to find a replacement. The designers chose a version of the Soviet nine-cylinder radial Ivchenko AI-14 R with compressed air start-up system. However, its power was insufficient. The Avia factory solved the problem with modification, resulting in M-462RF with take-off power of 311hp (232kW), 51hp (38kW) more than the original engine. The engine powered a hydraulically operated constant speed V-520 propeller. Ten prototypes were manufactured under the leadership of Stanislav Sklenář to verify and tune the design thoroughly. Factory pilot Vladimír Vlk took the Z-37 to the air for the very first time on June 29th, 1963, conducting a ten-minute flight. Serial production began in 1965 and was divided between three companies. The fuselage, including the application equipment, was produced by Moravan Otrokovice, the wings and tail surfaces were by Let Kunovice and the undercarriage was manufactured by Technometra Radotín. The final assembly took place in Kunovice. From 1971 until 1977, when production ceased, an improved version of the Z-37A was produced with more effective corrosion protection. In total, about 700 Bumblebees were produced. The production was resumed between 1983 and 1984, when 40 aircraft were produced. Number of Bumblebees were exported, most of them were delivered to the former GDR (about 250). The master of slow and low flight The designers paid great attention to the performance characteristics of the aircraft with the maximum load while making some effort to create a comfortable environment for the pilot. The cockpit had ventilation and heating, and air was supplied to it through a carbon filter to prevent the penetration of chemical application substances into the cockpit. To achieve the best possible view the cabin position was in line with leading edge of the wing. To increase safety, an emergency discharge of the spreader and the load in the tank was incorporated. Emergency ejection was carried out during pilot training, but instead of the chemicals water was used. Another thing that the design team paid attention to, was the protection of the aircraft against corrosion and the effects of chemicals. For this reason, a solid Terylene canvas was used to cover the tubular structure of the fuselage and tail surfaces. In addition, it was provided with a very durable polyurethane coating. The wing was designed as all-metal with a cover reinforced by longitudinal bracing. The wing has very efficient flaps which, even in the closed position, create an increase in lift due to the offset from the wing profile. The free space behind the chemicals tank was called the "sulk room" and was usually used for transportation of mechanic with his necessary tools from the base to the operating area. He was sitting back to the direction of flight and between him and the pilot was a chemical tank and a rubberized canvas screen. The “sulk room” also served for the occasional unofficial "sightseeing flight.” In the middle of nowhere Aerial crop dusting is a very challenging kind of flying. In the past, most aircraft in former Czechoslovakia were operated by SlovAir company, which was also responsible for proper pilot training. During the socialist era, some large agricultural cooperatives also had their own Bumblebees, some were also owned by machine and tractor stations. The pilots spent whole days in the cabin and were often pushed hard by an agriculturalist that ordered their service. The maximum allowable 80 take-offs per day was often exceeded, with over one hundred take-offs per day not unusual. The cabin did not have air conditioning and, despite the air filtration, chemicals from the sprays made their way into it. As the crews and their machine are usually staying all working day somewhere “in the middle of nowhere” without aviation fuel supply, the Z-37 can carry two underwing tanks. They are nothing more but the streamlined barrels to be removed from the aircraft after landing at the field aerodrome. The mechanic pumped fuel from them into the plane using a hand pump. Each external tank had a volume of 27.5 UK gal (125Litres), which doubled the fuel supply, as there are two inner tanks, each of the same volume. The consumption of the Z-37 is around 17.69 UK gal (80Litres) per flight hour when crop dusting and about 13.2 UK gal (60Litres) per flight hour when flying at travel speed. 7097 - NAV1
ATTENTION
UPOZORNĚNÍ
ACHTUNG
ATTENTION
Carefully read instruction sheet before assembling. When you use glue or paint, do not use near open flame and use in well ventilated room. Keep out of reach of small children. Children must not be allowed to suck any part, or pull vinyl bag over the head. Před započetím stavby si pečlivě prostudujte stavební návod. Při používání barev a lepidel pracujte v dobře větrané místnosti. Lepidla ani barvy nepoužívejte v blízkosti otevřeného ohně. Model není určen malým dětem, mohlo by dojít k požití drobných dílů.
INSTRUCTION SIGNS
BEND OHNOUT
OPTIONAL VOLBA
INSTR. SYMBOLY
SAND BROUSIT
PARTS
OPEN HOLE VYVRTAT OTVOR
DÍLY
INSTRUKTION SINNBILDEN
SYMETRICAL ASSEMBLY SYMETRICKÁ MONTÁŽ
REVERSE SIDE OTOČIT
REMOVE ODŘÍZNOUT
TEILE
SYMBOLES
PIECES
PLASTIC PARTS
A>
APPLY EDUARD MASK AND PAINT POUŽÍT EDUARD MASK NABARVIT
C>7097 C
7097 A
PE - PHOTO ETCHED DETAIL PARTS 7098-LEPT1 Z-37A Čmelák 1/72 8 3
4
5
9
10
11
51 51 12
1 15
2
17
21 23
15
24
33
32
14
20 20
19 18
22
6 13 7
25
52 26 26 27 27
25
28 28
34
29 35
36
37
38
39
40
41
42
16 30
31
43
47 48 48 48 49 49 49
76 46
53
45
44
50 67
64 65 54
56
55 58 59
57
66
63 62 68
B>
60
© EDUARD 2020
7097 B
61
69
70 71 72
Made in Czech Republic
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-Parts not for use. -Teile werden nicht verwendet. -Pieces a ne pas utiliser. -Tyto díly nepoužívejte při stavbě. -
COLOURS
BARVY
GSi Creos (GUNZE)
FARBEN
PEINTURE GSi Creos (GUNZE)
MISSION MODELS
AQUEOUS
Mr.COLOR
PAINTS
AQUEOUS
Mr.COLOR
PAINTS
H1
C1
MMP-001
WHITE
H307
C307
MMP-074
GRAY
H3
C3
MMP-003
RED
H315
C315
MMP-069
GRAY
H8
C8
MMP-070
SILVER
H327
C327
MMP-101
RED
H11
C62
MMP-001
FLAT WHITE
H338
C338
MMP-116
LIGHT GRAY
H12
C33
MMP-047
FLAT BLACK
H413
C113
MMP-090
H14
C59
MMP-005
ORANGE
H24
C58
MMP-070
ORANGE YELLOW
C100
Mr.METAL COLOR
METALLICS
MC214
MMM-001
YELLOW
DARK IRON
MMP-070
WINE RED
Mr.COLOR SUPER METALLIC
METALLICS
H47
C41
MMP-012
RED BROWN
SM201
MMC-001
SUPER FINE SILVER 2
H77
C137
MMP-040
TIRE BLACK
SM203
MMC-001
SUPER IRON 2
H85
C45
SAIL COLOR
SM206
MMC-001
SUPER CHROME SILVER 2
H43
2
MISSION MODELS
73 74 75
A
B
INFORMATION ON NEXT PAGE
PE2 PE32 PE38 PE60
PE39
PE33
PE34
PE73 PE74 PE35 PE36 PE37
PE40
PE68
B46
PE61
PE1
PE69
H47 MMP C41 012
H12 MMP C33 047
RED BROWN
FLAT BLACK
H47 MMP C41 012
H307 MMP C307 074
RED BROWN
GRAY
PE13
B20
H307 MMP C307 074 GRAY
H85 C45 SAIL COLOR
Interior colours often varied PE42 PE43 somewhat from aircraft to PE41 aircraft. Check your references. PE72 PE73
PE20 PE14 PE20
PE32
PE33
PE34
PE73 PE35
PE38 PE60
PE39
PE40
PE61
B47
PE36
PE37
PE68
PE69
H47 MMP C41 012
H12 MMP C33 047
RED BROWN
FLAT BLACK
PE9 PE10 PE11 PE55 PE57
PE3 PE5 PE4 PE56 PE54
PE74
C
PE6 PE8 PE7 PE71 PE70 H307 MMP C307 074 GRAY
H307 MMP C307 074
B18
GRAY
PE41 PE42 PE43 PE72 PE73
B19 H307 MMP C307 074 GRAY
A
PE44 2 pcs. PE27 H12 MMP C33 047
PE45 PE46
PE25
H307 MMP C307 074
B
GRAY
PE25
FLAT BLACK
PE58 PE59
PE29
B29
PE30 PE31
B18
PE62
B29
H8 C8
H12 MMP C33 047
SILVER
FLAT BLACK
H12 MMP C33 047 FLAT BLACK
PE63
H307 MMP C307 074 GRAY
3
GROUPS OF DECALS OR ETCHED PARTS FOR INTERIOR GROUP 1: decals 54, 55, 56, 57, 58, 59, 60, 79 GROUP 2: decals 53, 62, 63, 64, 65, 66, 67, 68 GROUP 3: decals 69, 70, 71, 72, 73, 74, 75, 76 GROUP 4: decals 81, 82, 83, 84, 85, 86, 87, 88 GROUP 5: decals 61, 89, 90, 91, 92, 93, 94, 95
D
B12
- 0,5 mm l - 1 mm plastic PE17
? ? ? ? ?
PE3, 6, 9, 29, 32, 35, 38, 43, 44 PE4, 7, 10, 30, 33, 36, 39, 42, 45 PE5, 8, 11, 31, 34, 37, 40, 41, 46 PE54, 55, 59, 60, 63, 68, 70, 72, 74 PE56, 57, 58, 61, 62, 69, 71, 73, 75
H307 MMP C307 074 GRAY
H12 MMP C33 047 FLAT BLACK
PE12
B46 ? B47
B12
D C2 C3 H307 MMP C307 074 GRAY
PE48
H307 MMP C307 074
B17
GRAY
C
4
PE49
A12 A14 A15 A13
A8
A9
A7
A11
A10
5
C4 H327 MMP C327 101 RED
C4
B34
B16
H307 MMP C307 074
PE26
GRAY
B16
C1
C1
H307 MMP C307 074 GRAY
H307 MMP C307 074 GRAY
C5
A16
E
B10
A17 SM203
1
=
SUPER IRON
H2 MMP C2 047
B;C ;D;E ;F A
- MARKINGS - MARKING
BLACK
B11
B9 MC214 MMM 001
B37
DARK IRON
SM203 SUPER IRON
1
B38 B9
B8
B14
B10
SM203 SUPER IRON
B37 B11 B38 6
POHLED ZEZADU REAR VIEW
B8
F PE66 - MARKING
A2
A5
A3
A
ONLY
PE66
A4 A6 A1
F
E
PE16 - MARKING D ONLY
PE16
B25
B40
H77 MMP C137 040 TIRE BLACK
B42
B31
7
G
PE15
PE15 - MARKINGS
B ,C ,D
H
ONLY
PE28
SM201 MMC 001
B44
H338 MMP C338 116
FINE SILVER
LIGHT GRAY
B41
B4
B3
B41
B44
PE28
H77 MMP C137 040 TIRE BLACK
H77 MMP C137 040 TIRE BLACK
SM201 MMC 001
B3
FINE SILVER
B5
B28 PE76 - MARKING
E
ONLY
B3
PE76
G
B28 SM201 MMC 001
H12 MMP C33 047 FLAT BLACK
H12 MMP C33 047
FINE SILVER
FLAT BLACK
B28
PE76
H
B2 B1
B35
B22 right
B23 left
PE52 right PE19 B27
H8 C8 SILVER
PE19
H8 C8 SILVER
8
PE21 left
2 pcs.
B24 MARKINGS
A ,E ,F
B21
B6
ONLY
B7
MARKINGS
B , C ,D
ONLY
B15 B15
B30 B32
B32
SM203 SUPER IRON
PE22
SM206 MMC 001 SUPER CHROME
B30
B43
9
MARKINGS
PE47
A,F
ONLY
B36
PE53
PE18 - MARKINGS B , C , D ONLY
MARKING
A
ONLY
B39
H12 MMP C33 047 FLAT BLACK
PE18 PE50 PE67
PE67 PE67 - MARKING
B48 E
ONLY
PE51 PE51 - MARKING
MARKING
A
ONLY
B26 MARKINGS
PE64 left
A ,B , C ,D , E
PE51
PE65 right H12 MMP C33 047 FLAT BLACK
SM206 MMC 001 SUPER CHROME
PE51
10
F
ONLY
ONLY
C2
C3
B16
C5
C4
LIQUID MASK
C1
MARKING
C
MARKINGS
D;F
11
MARKINGS
A ;B;C
MARKING
MARKING
MARKING
12
E
B
B
A OK-DKT, Czech Republic OK-DKT s/n 19-26, was manufactured in 1975, and since 1997 has been stored in a non-airworthy condition. It was sold in 2009 at auction, overhauled in 2020 and now is flown out of Hosin Air Field with a shark mouth reminiscent of what was worn by the F6F Hellcat. It was repainted back to its appearance when with Slovair in the 1980´s, including the red areas as well as the SlovAir logo on the vertical tail. The fertilizer tank was removed.
B DM-SSL, German Democratic Republic Z-37A s/n 17-30 was manufactured in 1974, flown by the East German company Agroflug, a division of Interflug, East German Airlines. The aircraft was used for defection and emigration of an East German family, two parents and two children on July 30th, 1979. The plane was re-registered to DDR-SSL in 1981, and after the re-unification of Germany, it was re-registered again to D-ENSL.
C VT-EBY, India Z-37A s/n 12-12 was one of two Z-37A delivered to India in 1975. The aircraft was registered in Indian registers for Bharat Agro Aviation Services (P) Ltd. – Delhi, withdrawn from use on December 1st, 2005.
D OM-FJA, Slovakia Z-37A s/n 21-05. Originally delivered to East Germany’s Interflug as DDD-SWF, after the re-unification of Germany, it was re-registered as D-WSWF. It was sold to Slovakia in 1990´s and flown by Agrolet as OM-FJA. It was overhauled in 2009, when it received a blue fuselage band and other blue accessories. OM-FJA is flown in Trnava-Kopanka.
E RA-2309G, Russia RA-2309G was manufactured in 1970, registered in Russian registers in 2014, serial unknown. Purchased probably in the Ukraine, it was overhauled in Toljatti. The aircraft is equipped with a Yak-12 propeller and was also equipped with Mi-4 wheels. It was put up for sale in 2020.
F
HA-MFY, Hungary
Z-37A s/n 13-29 was manufactured in 1971 and delivered to Hungary, registered there as HA-MCO. Purchased by SlovAir in 1981, it was registered as OK-AJM. It was sold back to Hungary in 2005, this time to perform glider tug duties under the registration HA-MFY from 2009. The fertilizer storage tank apparatus was removed and the accesses were covered.
STENCILING POSITIONS
?
S12
S13
?
S6
S5
S8
S7
S5
S6
S12
S13
S10
Z-37A Čmelák
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Z-37A Čmelák
STENCILING POSITIONS
S11
S11 ?
?
S9
S9
S3
S3 ?
S4
S3
S3 ?
S4
S3
?
?
S1
?
S3 S4
?
S4
S4
S1
S3
S3
S4
S4
S2
S2
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© EDUARD M.A., 2020
www.eduard.com
Printed in Czech Republic