Hi,Imshi et al,
I would venture to suggest that if an anti-armour weapon such as the SRAAW struck a helicopter, it would have no trouble finding solid enough material to detonate against.A typical helicopter has enough rigid aluminium or steel in it's structure, such as doors, fuel tanks, struts, control rods, rotors, masts,skids,pylons,etc to set off the sensitive fuses on such weapons.Helicopters don't really have a whole lot of dead space to absorb strikes from small arms rounds, let alone anything bigger.As for a hole the diameter of a 2-euro coin,I disagree. Whilst the copper core of a HEAT round might make a small-ish hole, the 3 to 4 inch diameter of a modern round would punch a considerable hole in any aircraft, even in the instant it takes for the round to detonate, not to mention the effect of blast and the kinetic energy expended.Helicopters, by their nature, are quite vulnerable to the effects of even light-weight fire.As Vietnam and Afghanistan showed,helicopters can be downed with low-tech weapons handled by poorly-trained footsoldiers.An example would be the loss of one of the Blackhawks in the Somalia conflict. It had it's tail-rotor shot off by a chance RPG shot and was doomed in an instant.Even such helicopters as the Mi24 and Apache are vulnerable, if less so than their predecessors.The US Army had many Apaches rendered unfit to fly by hits from 12.7 and 23mm rounds in the Gulf Wars.They were not written off because the rugged construction of the rotors and redundancy in the control systems enabled them to fly clear of the immediate battle area and be retrieved.They are not perfect helicopters, just better than what went before.
regards
GttC