Quantcast Energy-Balance Method. - Continued - std30140076

 

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Energy-Balance Method. - Continued - std30140077


DOE-STD-3014-96
d. If the coefficient of restitution between the aircraft and the target (e)
can be estimated, the portion of the total impact kinetic energy (Ei)
that will be transmitted to the target structure (Ea) can be computed
as follows.
m
1
2
MeVt , when
Ea
<e
(6-4)
Me
2
or
m
1
1
2
2
MeVt
mVm, when
>e
Ea
(6-5)
Me
2
2
where:
Ea =
kinetic energy imparted to the target;
Me =
target effective mass (represents inertial resistance);
Vm =
velocity of missile after impact.
Vt  =
velocity of target after impact;
and
m
Vo
e
Me
Vm
(6-6)
m
1
Me
m/Me
Vt
[Vo(1 e)]
(6-7)
1 (m/Me)
72


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