Determination of a Load Approaches for Aircraft Impacts - The Risks of Nuclear Energy Technology - page 272

Fig. 14.22 Effective impact areas for a B747—complete aircraft
For illustration the effective impact areas above are shown in Fig. 14.22 .
14.4.3 Load Approach for the Medium-Range Aircraft
of the Type Airbus A320
In the same manner as for the long-range aircraft Boeing 747 the impact load-time
function for an Airbus A320 as a typical medium-range aircraft will be shown here
for comparison. Exemplary results for the impact with a straight target are shown in
Fig. 14.23 in the form of an integral load function. The impact duration is 165 ms,
the peak value of the impact force reaches approx. 165 MN after 115 ms. As a
substitute for a calculated function with many polygon nodes an idealized impact
load-time function is shown. The effective impact surface for the entire aircraft can
be described by a circle with a diameter 6.50 m. The fuselage diameter of an A320
of 4.50 m is smaller than that of a B747 of 7 m.