Singularities Of The Rectifying Developable Of A Nonlightlike Space Curve In Minkowski 3-Space

In this paper, We give the singularities of rectifying developable in Minkowski 3-space. Then main tool we use is normal distance functions of a curve.We also establish the relationships between the singularities that induce from the normal distance function and geometric invariants of the curve,which related with the order of contact between the curve and the helix. .