IÖR 58M

The IÖR 58M was a Granzerian Infrared Air-to-Air missile that was developed in 1958, and was the first air-to-air missile to be developed in Granzery, it was a highly successful design and remained in service with the Granzerian air force until the introduction of the FKHL-LR Sprintel in 1991. The missile was capable of pulling 11Gs while travelling at Mach 2.0. The missile however during its early deployment, was plagued with reliability issues, with the fuze often failing to detonate and in one instance the missile detonated as it detached from the aircraft firing it, destroying a Juhasz J-2 in 1964 during practice and killing Corporal Antal Erdős. Most of these issues were ironed out with the introduction of the IÖR 58M2 in 1967, which upgraded and retrofitted a superior fuze system to the missile.

Description
The IÖR 58M1 was guided by a heat seeking PbS (Lead Sulfide) head with 30° field of view, while later variants included a rotating reticle which would increase the field of view to 50+°. The early infrared seekers would often malfunction in hot weather and be unable to track targets effectively, however with the IÖR 58M2 upgrade in 1967 these issues were solved by installing an upgraded version of the existing seeker head with a more sensitive infrared CdS (Cadmium Sulfide) cells rather than the insensitive PbS cells used on the IÖR 58M1.

A radar variant of the IÖR 58M called the LÖR 58M was developed in the early 1960s, but early models were faulty and featured poor target tracking and maneuvrability, despite this the LÖR 58M was pushed into service in 1968 despite these flaws due to an arms embargo placed on Granzery by Stasnov due to the ongoing Civil War. The LÖR 58M was withdrawn from service in 1971 and replaced in Granzerian service with the Vazandian

Variants

 * IÖR 58M1: Original 1958 model Infra-red homing missile with a PbS (Lead Sulphide) seeker head.
 * IÖR 58M2: A model with an upgraded field of view and a superior CdS (Cadmium Sulphuide) seeker head.
 * LÖR 58M: A semi-active radar homing missile that was used on the Juhasz J-3 fighter for three years before being withdrawn from service.