A wind tunnel model of an unidentified air launched munition. This could be the DRDO high angle of maneuver air launched strategic bomb with lattice fins under aerodynamic study.
It has 4 lattice / grid fins at the rear.
Generally advantages of lattice / grid fins are
1. Lattice / grid fins allows for high AoA
2. Lattice / grid fins can be used for de-accleration if required post supersonic release.
3. During supersonic flight post release lattice / grid fins will enable better maneuverability and stabilization.
@Haldilal post this
(Add the link to the first page of drdo thread at the end )
No need to give me any credit for any of my posts , since you are posting on behalf of DFI.