PPRuNe Forums - View Single Post - MH17 down near Donetsk
View Single Post
Old 22nd Jul 2014, 01:34
  #696 (permalink)  
toaddy
 
Join Date: Apr 2014
Location: NC
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
I believe I read this was an older warhead, a fragmentation type instead of the expanding rod type.

I've been wondering if/how a fragmentation missile would cause a plane, as big as a T7, to come apart in the air. From what I've read the 154 pound warhead fragments and bits go everywhere at crazy speeds so it cuts through whatever it hits. I read somewhere that the proximity fuse activates at around 100 meters (or it might have been yards). The impacts in the parts look like golf ball size and smaller, are there also some larger bits of frag that could chop off whole sections of a T7?

I can easily see how it will bring down the plane, cutting hydraulics, killing the pilots, destroying components, etc. But what actually causes the entire tail to separate at altitude? Is it from aerodynamic forces when/if the plane changes orientation with respect to the 500 plus mph slipstream. Is the concussive blast sufficient to move the plane, lop off the tail, etc. ? Or is it just the fragmentation that does the damage ? I have some understanding and experience with radar and tracking systems but no experience with explosives. I'm just curious. I suppose it's morbidly curious but the engineer in me would like to know. thanks.
toaddy is offline