Patent ID: 8689619

Claim:
A wind tunnel device comprising: a segmented enclosure configured with an enclosed interior defining a cyclical tunnel for receiving continuous airflow therein, the segmented enclosure comprising an airflow system and a testing region, said airflow system configured to deliver airflow through the tunnel including the testing region, said testing region comprising: a first portion carrying an arm including a spray tip configured to spray particulates in the testing region at an angle; a second portion of the testing region including an enlarged cutout region configured to receive the angled spray particulates, wherein the second portion with the enlarged cutout region accommodates the area covered by the angled spray particulates; wherein the airflow carries the angled spray particulates from the spray tip into the enlarged cutout region such that the angled spray particulates pass through and exit the second portion of the testing region; and wherein the airflow exiting the testing region returns to the airflow system through the enclosed interior of cyclical tunnel thereby re-circulating the airflow.