Abstract:

The unsteady wind tunnel wall pressure for two groups of models oscillating in pitch to high angles of attack was measured.The models tested consist of two sets of delta wings having 70° and 65° leading edge sweep.The unsteady wall pressure characteristics such as delay and frequency were analyzed.The effects of parameters such as model size,reduced frequency,leading sweep, etc., on unsteady wall pressure were discussed.

Key words: unsteady flow, wind tunnel, wall pressure