At the difference of Vistad bombs that actually entered in service and were operationally used all along ww2, first by the Yugoslav then by the Croats, information on Sartid bombs is more problematic.
Sartid satnds for "Srpsko Akcionarsko Rudarsko Topioničko Industrijsko Društvo" a compoany founded in 1913 in Smeredevo - the main metallurgical works of Yugoslavia in the interwar period.
In 1941 the Sartid "90kg" Model 1932 bomb was the standard projectile of the Yugoslav air force (has already been been discussed on this forum at various occasions), equipping its Blenheim bombers, while the Vistad 50kg and 100kg ("106kg") equipped its Dornier bombers. The Stankovic (Vistad) 12kg was also standard equipment. Some Skoda 50kg an 100kg bomb (apprently vz.24) were also still in use. Italian bombs (20kg incendiary, 2kg inc and frag, 50kg, 100kg and 200kg) equipped the Savoia 79 bombers.
What makes assessment of production and operational use of Sartid bomb problematic is the fact that the newly designed Sartid bombs seem to have been intended for the Yugoslav Navy Air arm and photographs of Hydroplanes equipped with bombs are absent (till now). The existing photographs showing seaplanes with the old Austro-Hungarian 150kg bombs that were to be replaced by Sartid models.
The main characteristic of Such Sartid designs was that they implemented the concept of rotationary bomb developped. As a matter of fact the Sartid 100kg 1932 design looked superficially as by a 100kg PuW but the dimensions and fuze characteristics were different.
Interestingly the 90kg Model 32 w as equipped with a "normal" with 4 not-angled fins, but with the operational use, the need for preventing deformation of the fins and increasing precision of the fall imposed the addition of a reinforcing frame to these fins, first square then circular.
The various Sartid designs were as follow:
SARTID 100kg model 1932 (Rotative)
L 1947.5mm
D 250mm (255mm)
(By comparaison the dimensions of the 100kg PuW were L 1910mm and D 242mm)
Lenght fins 623.5mm
max width fins 250mm
W 100kg incl 40g explosive
Sartid 100kg model 1937 (Rotative)
L 1947.5mm
D 250mm (255mm)
Lenght fins 623.5mm
max width fins 250mm
W 100kg incl 40g explosive
Sartid 100kg model 1941 (Rotative)
L 1947.5mm
D 250mm (255mm)
Length fins 623.5mm
max width fins 250mm
W 100kg incl 40g explosive
The 250kg bombs were also rotationary models but with a different fin shape, square this time, with folded tips, instead of angled straight fins :
SARTID 250kg Model 1937
L 2100mm (noise cone 408mm, c ircular body 300mm tail cone 1392)
D 375mm
Length fins 750mm
max width fins 460mm
SARTID 250kg Model 1941
L 2100mm (noise cone 408mm, circular body 300mm tail cone 1392)
D 375mm
Length fins 750mm
max width fins 460mm
Unknown date Sartid 50kg (rotationary) with an interesting "enveloping" shape of of fins (such fin shapes were also tested in the late thirties in Spain and China on 10-25kg order bombs)
SARTID 50kg (Rotative)
L 699mm
D 200 mm
Fins length 432 mm
W 55kg incl 22kg explosive
Sartid satnds for "Srpsko Akcionarsko Rudarsko Topioničko Industrijsko Društvo" a compoany founded in 1913 in Smeredevo - the main metallurgical works of Yugoslavia in the interwar period.
In 1941 the Sartid "90kg" Model 1932 bomb was the standard projectile of the Yugoslav air force (has already been been discussed on this forum at various occasions), equipping its Blenheim bombers, while the Vistad 50kg and 100kg ("106kg") equipped its Dornier bombers. The Stankovic (Vistad) 12kg was also standard equipment. Some Skoda 50kg an 100kg bomb (apprently vz.24) were also still in use. Italian bombs (20kg incendiary, 2kg inc and frag, 50kg, 100kg and 200kg) equipped the Savoia 79 bombers.
What makes assessment of production and operational use of Sartid bomb problematic is the fact that the newly designed Sartid bombs seem to have been intended for the Yugoslav Navy Air arm and photographs of Hydroplanes equipped with bombs are absent (till now). The existing photographs showing seaplanes with the old Austro-Hungarian 150kg bombs that were to be replaced by Sartid models.
The main characteristic of Such Sartid designs was that they implemented the concept of rotationary bomb developped. As a matter of fact the Sartid 100kg 1932 design looked superficially as by a 100kg PuW but the dimensions and fuze characteristics were different.
Interestingly the 90kg Model 32 w as equipped with a "normal" with 4 not-angled fins, but with the operational use, the need for preventing deformation of the fins and increasing precision of the fall imposed the addition of a reinforcing frame to these fins, first square then circular.
The various Sartid designs were as follow:
SARTID 100kg model 1932 (Rotative)
L 1947.5mm
D 250mm (255mm)
(By comparaison the dimensions of the 100kg PuW were L 1910mm and D 242mm)
Lenght fins 623.5mm
max width fins 250mm
W 100kg incl 40g explosive
Sartid 100kg model 1937 (Rotative)
L 1947.5mm
D 250mm (255mm)
Lenght fins 623.5mm
max width fins 250mm
W 100kg incl 40g explosive
Sartid 100kg model 1941 (Rotative)
L 1947.5mm
D 250mm (255mm)
Length fins 623.5mm
max width fins 250mm
W 100kg incl 40g explosive
The 250kg bombs were also rotationary models but with a different fin shape, square this time, with folded tips, instead of angled straight fins :
SARTID 250kg Model 1937
L 2100mm (noise cone 408mm, c ircular body 300mm tail cone 1392)
D 375mm
Length fins 750mm
max width fins 460mm
SARTID 250kg Model 1941
L 2100mm (noise cone 408mm, circular body 300mm tail cone 1392)
D 375mm
Length fins 750mm
max width fins 460mm
Unknown date Sartid 50kg (rotationary) with an interesting "enveloping" shape of of fins (such fin shapes were also tested in the late thirties in Spain and China on 10-25kg order bombs)
SARTID 50kg (Rotative)
L 699mm
D 200 mm
Fins length 432 mm
W 55kg incl 22kg explosive
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