STANAG 4355 - The Modified Point Mass and Five Degrees of Freedom Trajectory Model, an element of

military strategy Military strategy is a set of ideas implemented by military organizations to pursue desired strategic goals. Derived from the Greek word '' strategos'', the term strategy, when it appeared in use during the 18th century, was seen in its narrow s ...

, is a

NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...

Standardization Agreement In NATO, a standardization agreement (STANAG, redundantly: STANAG agreement) defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the alliance. Each NATO st ...

for surface to surface exterior ballistic modelling in support of

Artillery Artillery is a class of heavy military ranged weapons that launch munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during siege ...

, mortar and

rocket A rocket (from it, rocchetto, , bobbin/spool) is a vehicle that uses jet propulsion to accelerate without using the surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely fr ...

systems. This model is not as time-consuming to solve as the

rigid body In physics, a rigid body (also known as a rigid object) is a solid body in which deformation is zero or so small it can be neglected. The distance between any two given points on a rigid body remains constant in time regardless of external force ...

system, and uses a force system, axial spin and an estimate of the yaw of repose. The principal aim of this agreement is to standardize the exterior ballistic trajectory simulation methodology for NATO Naval and Army Forces. The Modified Point Mass model will be used for spin-stabilized projectiles and the Five Degrees of Freedom model will be used for fin-stabilized rockets. This facilitates the exchange of exterior ballistic data and fire control information. The custodian of this STANAG is Integrated Capability Group - Indirect Fires, Sub Group 2 within the NATO Army Armaments Group
NAAG
. The most recent promulgated copy is Edition 4, dated 14 September 2017. Implementation of the STANAG is often accomplished by adoption of components of the

SG2 Shareable (Fire Control) Software Suite (S4) The NATO Army Armaments Group (NAAG) Integrated Capability Group Indirect Fires (ICGIF), formerly Land Group 4, and their Sub Group 2 (SG2) on Surface to Surface Ballistics has created a widely used set of shareable fire control software using th ...

. For a description of how STANAG 4355 relates to other STANAGs in the areas of ballistics and meteorology please see the following preview (also shown in slide 4 of the following presentation)

References

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