The purpose of the AED is to position the 40 mm cannon on to the target in azimuth and elevation and to provide twin-axis turret stabilisation against external disturbances .
DET NOUN ADP DET PROPN AUX PART VERB DET NUM NOUN NOUN ADP ADP DET NOUN ADP NOUN CCONJ NOUN CCONJ PART VERB ADJ ADJ NOUN ADP ADJ NOUN .