SF-37 Viggen

The Saab 37 Viggen is one of the most distinctive and technologically significant European combat aircraft of the Cold War era. Designed in Sweden to operate from dispersed, improvised highway strips while confronting numerically superior forces, the Viggen was the first mass-produced canard-equipped combat aircraft. Even more revolutionary, it was the first fighter in the world to carry a digital central computer (the CK37), fully automating tasks that previously required a dedicated rear-seat navigator. The SF-37 variant specifically focuses on the photographic reconnaissance mission, replacing the nose radar with an array of cameras to conduct high-speed, low-level tactical sweeps.

In X-Plane 12, DeltaWing Simulations brings this Swedish Cold War icon to life with an exceptional level of procedural detail. The 3D model accurately captures the imposing tandem-delta and canard configuration, complete with 4K textures (with 2K performance options available), custom particle systems, and remove-before-flight ground equipment. Inside the cockpit, virtual pilots will find a highly immersive recreation of the Viggen’s unique analog/digital interface, complete with custom cockpit lighting, a faithfully reproduced HUD, and the signature middle I-ind display.

Systems-wise, the DeltaWing SF-37 is built for high-speed procedural flying. The heart of the simulation is the CK37 aircraft computer, meticulously modeled to handle navigation data, fuel calculation, and time-on-target management via pre-planned data tape functionality. Handling the Viggen requires mastering its unique hydraulic system and SPAK dampening system, both custom-coded for this release. One of the aircraft's most defining characteristics—its aggressive Short Takeoff and Landing (STOL) capability—is fully functional, utilizing a custom thrust reverser system that allows for breathtakingly short rollout distances on standard runways or simulated highway strips. Furthermore, it incorporates custom camera logic for executing reconnaissance missions and custom heat-seeking missile logic for self-defense.

Classified firmly within our Procedural tier, the DeltaWing SF-37 Viggen represents a deep, systems-rich emulation of a highly specialized airframe. While the CK37 computer, SPAK dampening, and STOL reverser are intricately coded plugins rather than raw first-principles physical simulations, they enforce strict, authentic operational workflows. It is a superb module for virtual fast-jet pilots who want to master Cold War tactical navigation, low-altitude intercepts, and extreme short-field operations.

Primary Missions & Operational Roles

• Tactical Reconnaissance: Execute high-speed, low-altitude photographic reconnaissance sweeps utilizing custom camera modules.

• Highway Strip STOL Operations: Practice aggressive short-field landings and takeoffs using the signature thrust reverser and canard aerodynamic layout.

• Cold War Tactical Navigation: Navigate complex routes and manage time-on-target using the early digital CK37 computer and sharable data tapes.

• TILS Precision Approaches: Fly poor-weather recoveries using the Swedish Tactical Instrument Landing System (TILS).