Table 5 

The thrust force increment on the calf due to drafting 

Case 
X/X_{max} 
K 
X 
X/X_{req} 


H1 
0.82 
3.99 
11.7 
0.62 
H2 
0.71 
3.66 
3.1 
0.18 
DL 
0.98 
3.65 
8.2 
0.48 
DR 
0.99 
7.39 
20.5 
0.58 
A2 
0.9 
4.62 
7.3 
0.33 
A3 
0.02 
7.94 
0.2 
0.005 
A4 
1 
4.26 
11.5 
0.57 
A5 
0.98 
4.9 
7.7 
0.33 
A6 
0.96 
4.61 
4.9 
0.22 
BR 
0.94 
7.94 
15.3 
0.41 


X/X_{max }is the fraction of the maximal thrust possible, obtained from inserting the value of ΞΎ/L_{2 }from Table 4 into Figure 5c and following the vertical line. K is calculated from equation (5). The thrust increment X (in newtons) is calculated assuming a swimming speed of 2.4 m/sec, and the X/X_{req }represents the thrust transferred from the mother as a fraction of the total thrust required of the calf. 

Weihs Journal of Biology 2004 3:8 doi:10.1186/jbiol2 