Abstract: Methods and apparatus for conducting particle erosion tests of vehicle surfaces are disclosed. An example apparatus includes a particle dispersion chamber. The particle dispersion chamber includes a first end and a second end opposite the first end. The example apparatus includes an air supply feed coupled to the first end to provide air flow to the dispersion chamber. The example apparatus includes a first nozzle adjacent the second end. The example apparatus includes an injector extending into the particle dispersion chamber. The injector is to inject particles into the air flow to generate a particle-injected air stream. The first nozzle is to deliver the particle-injected air stream to a test chamber coupled to the first nozzle.