Trajectory Perturbations of Fin-Stabilized Projectiles Due to Muzzle Blast

Numerical investigation on combustion in muzzle flows using an inert gas labeling method

“…Based on the former experiment, he investigated the flow at the muzzle of a gun during launch of finstabilized projectiles both experimentally and analytically. The effect of launch gas dynamic loadings upon projectile motion was calculated and was shown to compare favorably with experiment [10]. Taylor formulated a model to describe the details of the flowfield produced by the firing of a gun or mortar, and numerical results agreed reasonably well with the existing experimental data.…”

Aerodynamic interference during sabot discard

“…Since he neglects any contribution due to gut tube/projt. tile interaction, the value he assigns to deviation due to muzzle blast is orders of magnitude greater than that found in more recent investigationss, 6 which show that muzzle blast does not contribute significantly to trajectory deviation and that the actual source lies with gun tube or sabot discard interactions, Gallagher notes that the sabot components open symmetrically, but the center of gravity of the grouped components does not lie along the axis of the projectile. He assumes that there will be a momentum exchange between the sabot and projectile in relation to their masses and the magritude of the center of graviLy separation.…”

Trajectory perturbations of asymmetric fin-stabilized projectiles caused by muzzle blast

“…Initial transverse velocities do not significantly affect muzzle blast loadings. 4 As a result, the contribution of these terms to the trajectory deflection would be of equal magnitude in both 0 0 and 6/, thereby cancelling out in Eq. (2).…”