Pedestrian Test Protocol - Euro NCAP

Version 7.0
March 2013
Release point
h
Impactor in free flight
75mm
Free flight distance (d)
Figure 24: Droop Compensation
9.5 Ballistic Compensation
There are two procedures which can be used for ballistic compensation, it is at the discretion of
the test house as to the most appropriate method, see Figure 25. The terms used for the
calculations are:
At the release point: At the point of first contact:
u = initial velocity v = impactor velocity (11.1m/s)
= firing angle = direction of impact (0)
d = free flight distance
h = height increase
9.5.1 The first case is where is fixed, and = 0, v = 11.1m/s. The vehicle must be
positioned in relation to the fixed propulsion system, therefore u, d, and h are the
subjects.
9.5.2 Using the following equations find u, d, and h:
v
u
cos( )
2
v
d tan( )
g
2
v 2
h tan ( )
2g
9.5.3 Position the vehicle to be the correct distance away from, and height above the release
point. Proceed to Section 9.5.8.
9.5.4 The second case is where d is fixed, and = 0, v = 11.1m/s. The propulsion system is
positioned and aimed in relation to the vehicle, therefore u, h and are the subjects.
9.5.5 Using the following equations find u, h and :
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