The sound design of environmental control systems ior underground shelters is based on knowledge of the thermal transient response under certain climatic conditions. To gain insight into the transient response of underground shelters, a series of tests using a scale model shelter was conducted. Model-prototype considerations resulted in several model temperature distortions which could be accounted for by analytical techniques. The corrected model results agreed well with results from an analog

more »

... computer study which considered the same prototype shelter. The model results also indicated that shelter shape does not significantly affect its transient response.