Birdstrike on Canopy and HUD System

00:04 Marconi Avionics
00:16 Bird Impact of the Canopy and HUD System
00:21 The birdstrike impact on the canopy must be considered
           as a system with the HUD - or this can happn
00:27 The impact of the canoy onto the HUD does npt allow
           the HUD deflection to occur because there is no time.
           Coupling with this the canopy being of a monolithic
           contruction results in a catastophic failure of both
           assemblies due to the huge energy transfer rates involved.
00:48 The Marconi F-16 C/D HUD has been designed to survive
           the bird impact load by being dynamically flexible and
           using glass designed to fragment to particle size if failure
           does occur
00:57 As can be seen the transparency rolls over the edge
           of the combiner as the deflected wave flows aft. No
           No damage is caused to the HUD and no danger is
           afforded to the crrew.
01:15 The Design Requirement
           "A four pound birsd firded at 350 Knots impacting the
           forward portion of the canopy shall not cause
           incapacitating injury to the pilot"
           This requires no large, sharp or high velocity
           fragmentation
01:40 Marconi Avionics

Marconi Electronic Systems
Birdstrike on Canopy and HUD System
VHS NTSC