| φ = U | a2 | ( | b2 | + r ) cos θ − U1 | b2 | ( r + | a2 | ) cos θ, |
| b2 − a2 | r | b2 − a2 | r |
(15)
| ψ = −U | a2 | ( | b2 | − r ) sin θ − U1 | b2 | ( r − | a2 | ) sin θ, |
| b2 − a2 | r | b2 − a2 | r |
(16)
and similarly, with velocity components V and V1 along Oy
| φ = V | a2 | ( | b2 | + r ) cos θ − V1 | b2 | ( r + | a2 | ) cos θ, |
| b2 − a2 | r | b2 − a2 | r |
(17)
| ψ = V | a2 | ( | b2 | − r ) sin θ + V1 | b2 | ( r − | a2 | ) sin θ, |
| b2 − a2 | r | b2 − a2 | r |
(18)
and then for the resultant motion