| SD 1700 | |
|---|---|
 | |
| Type | Fragmentation bomb |
| Place of origin |  Nazi Germany |
| Service history | |
| Used by | Luftwaffe |
| Wars | World War II |
| Specifications | |
| Mass | 1,703 kg (3,754 lb) |
| Length | 3.30 m (10 ft 10 in) |
| Diameter | 660 mm (2 ft 2 in) |
| Warhead | Amatol TNT |
| Warhead weight | 730 kg (1,610 lb)[1] |
TheSD 1700 (Sprengbombe Dickwandig 1700) orthick walled explosive bomb in English was afragmentation bomb used by theLuftwaffe duringWorld War II.
The second most used category of bombs was the SD series which were high-explosive bombs but with thicker casings which meant their charge to weight ratio was only 30 to 40% of their total weight. At first glance, they were difficult to distinguish from the SC series of bombs, but the two series were color-coded the SC series having yellow tail stripes, while the SD series had red tail stripes. Bombs in this series were the SD 1, SD 1 FRZ, SD 2, SD 10 A, SD 10 FRZ, SD 10 C, SD 15, SD 50, SD 70, SD 250, SD 500, SD 1400, and SD 1700. The number in the bombs designation corresponded to the approximate weight of the bomb.[2]
The SD series was used primarily in two roles that were determined by the type of fuze and accessories fitted to the bomb. The first was as a fragmentation bomb with instantaneous fuze and when the bombs exploded above ground the case created large fragments which would kill enemy personnel and destroy unarmored vehicles. The second role was as ageneral-purpose orarmor-piercing role. In this role, the bombs were fitted with a time delay fuze which detonated the bomb after it had pierced a target destroying it with a combination of its blast and fragments.[2]
The body was of one-piece forged steel construction which was filled through the base and was fitted with a magnesium alloy 4 finned tail with a cylindrical strut. Around the nose of the bomb was akopfring - a metal ring, triangular in cross section, designed to prevent ground penetration or to stop forwardmomentum when hitting water. A single transverse fuze was located in the middle of the body and two central exploder tubes ran the length of the bomb through theAmatol orTNT filling. The SD 1700 was horizontally suspended by an H-Type suspension lug in abomb bay or fuselagehardpoint. The bombs were either painted black or sky blue with red stripes on the tail.[1]