ANNEX VIIIVERIFYING AIR DRAG DATA

Appendix 7

Standard values

1.Standard values for the declared air drag value Cd · Adeclared are defined according to Table 18. In case standard values shall be applied, no input data on air drag shall be provided to the simulation tool. In this case the standard values are allocated automatically by the simulation tool.

Table 18

Standard values for Cd · Adeclared

Vehicle group

Standard valueCd · Adeclared [m2]

1

7,1

2

7,2

3

7,4

4

8,4

5

8,7

9

8,5

10

8,8

11

8,5

12

8,8

16

9,0

F12.For vehicle configurations rigid lorry + trailer the overall air drag value is calculated by the simulation tool by adding standard delta values for trailer influence as specified in Table 19 to the Cd·Adeclared value for the rigid lorry.

Table 19

Standard delta air drag values for trailer influence

Trailer

Standard delta air drag values for trailer influence [m2]

T1

1,3

T2

1,5

3.For EMS vehicle configurations the air drag value of the overall vehicle configuration is calculated by the simulation tool by adding the standard delta values for EMS influence as specified in Table 20 to the air drag value for the baseline vehicle configuration.

Table 20

Standard delta Cd Acr (0) values for EMS influence

EMS configuration

Standard delta air drag values for EMS influence [m2]

(Class 5 tractor + ST1) + T2

1,5

(Class 9/11 truck) + dolly + ST 1

2,1

(Class 10/12 tractor + ST1) + T2

1,5