(5)
With n = ½, the jet is reversed in direction, and the profile is the catenary of equal strength.
In Bobyleff’s problem of the wedge of finite breadth,
| ch nΩ = √ | b | √ | u − a | , sh nΩ = √ | b − a | √ | u | , |
| a | u − b | a | u − b |
(6)
| cos nα = √ | b | , sin nα = √ | a − b | , |
| a | a |
(7)
and along the free surface APJ, q = Q, ψ = 0, u = e−πφ/m = aeπs/c,
| cos nθ = cos nα √ | eπ2/c − 1 | , |
| eπ2/c − cos2 nα |
| eπ2/c = | cos2 nα sin2 nθ | , |
| sin2 nθ − sin2 nα |