@FLY 7 ....
What happened to the helicopter windshields in the above YouTube clip?? Hail Stones or vandals? Man, that would be expensive!!!!
Also, windshield protective films, or "tear-off's" as they are known in the motorsport race car industry, are basically not approved yet for basically 2 safety reasons:
1- They could become unstuck in the swirling airflow, instantly peel off, and become sucked into the gas turbine engine inlet, causing massive damage, flameout, or even cause an accident. Even the film blocking an oil cooler screen or MGB cooling duct could cause catastrophic failure due overheating.
2- The film could also peel off into the slipstream, and become tangled in the main rotor swashplate, blades, or tail rotor assembly causing binding aircraft movements and maybe even loss of control.
Until a film can be secured by a means of certain attachment, then I don't think any aircraft manufacturer would let a film be fitted onto a window screen of any type!
Cheers, KP