Passive Control of Base Pressure: A Review

In the present world, passive control finds application in various areas like flow over blunt projectiles, missiles, supersonic parallel diffusers (for cruise correction), engine of jets, static testbeds rockets, ports internal combustion engines, vernier and single expansion ramp nozzle (SERN) rockets. this review, techniques to base pressure regulate drag force are discussed. study, papers ranging from subsonic, sonic, Different types management cavity, ribs, dimple, cylinder, spikes, etc., discussed review article. This study found that device can pressure, resulting an enhancement reducing drag. Also, is very efficient whenever there a favorable gradient at exit.