Civil Engineering Reference
In-Depth Information
A320
B747
Phantom
Fig. 14.1
Comparison of the geometric dimensions in a horizontal section: Phantom-Airbus
A320-Boeing 747 on impact of a convoy containment with diameter of 66 m
the load function based on the “accidental” crash of a Starfighter, then of a
Phantom. As previously mentioned, the latter became a part of the
RSK-Guidelines of 1981. Furthermore, the document establishes that the load can
be assumed to be equally distributed over an area of 7 m
2
.
After the attacks on September 11, 2001 the deliberate crash of a large commer-
cial aircraft was also considered. Different conditions apply in the case of such a
crash compared to the load function of a Phantom. Figures
14.1
and
14.2
clarify the
geometric relationships. While the impact of a phantom can be assumed to be
almost punctiform, this assumption only serves as a rough estimate for the impact of
a B747 when considering the relationship of the dimensions sketched here. While
the wingspan of a Phantom only measures 11.77 m, that of a Boeing 747 is almost
65 m which roughly corresponds to the diameter of a convoy reactor building.
14.2 Mathematical Models to Determine an Impact
Load-Time Function
An experimental determination of the load function for different aircraft models
through real tests is not feasible with justifiable means. The determination was
therefore carried out on the basis of theoretical models with support of limited
experimentation.
