NOVELTY - The turbine has blades (1) spiraling around a rotary axle (9), where centers (3) of the respective blades are attached to the axle. A cylindrical extension (10) is mounted in front of the blades and protruded from the axle. Another cylindrical extension (17) is protruded opposite to the former extension on the axle. A hall (11) is traversed through the latter extension and connected to an electric power generator (18). Leading edges (4) of the respective blades are narrower than trailing edges (5) to create an aerodynamic profile (8), where the trailing edges are perpendicular to the axle.    USE - Horizontal axis logarithmic spiral fluid turbine i.e. fluid rotor, for use on a fixed object e.g. pole, bridge or fixed vertical tower such as street light, and fast moving vehicle e.g. electric car and boat above water surface i.e. sea bed or river, to transform rotational energy into electric power by rotating an electric power generator to provide electricity in water mill or wind mill or at light winded environment. Can also be used as a vertical axis logarithmic spiral fluid turbine.    ADVANTAGE - The turbine is effective for generating power at given radius, fluid type and velocity, so that the turbine is simple, safe and inexpensive to construct and maintain. The turbine guides moving fluid around the rotary axle and between the blades in a manner so as to collect fluid kinetic energy in an efficient manner. The surface of the blade is perpendicular to an axis from a point and at a side of the blade facing rotation direction so as to provide an aerodynamic shape to the blade and lift the blade in an effective manner. The turbine allows a rotary axis to be attached to the generator from a front end or back end so as to allow the turbine to transfer the collected energy into usable power. The turbine allows a horizontal axis to be parallel to fluid current so as to improve efficiency of the turbine. The aerodynamic profile creates an efficient turbine so as to move the fluid in an efficient manner by shifting excessive fluid to blade surfaces in a rear side of the turbine. The turbine has simplicity and low drag when tethered or pulled behind a moving object from a front part. The aerodynamic profile guides the turbine to self-orient into fluid current direction by mounting the front part of the turbine to a horizontal pivot point or to a cable. The turbine transforms the kinetic energy along blades surface in a gradual manner. The turbine distributes and channels the flowing fluid evenly between the blades, so that the leading edges are allowed to increase start-up speed that is significantly lower. The turbine can withstand higher forces, so that total surfaces of the blades can be distributed in relatively smaller radius and can be built as one whole piece. The turbine is inexpensive, includes less engineering works, and has reduced moving parts and low maintenance costs, thus producing minimal noise and turbulence. The turbine is safer for birds and marine life, and protects environment.    DESCRIPTION OF DRAWING(S) - The drawing shows a rear perspective view of a horizontal axis logarithmic spiral fluid turbine mounted onto a tower.    Blades (1)    Centers (3)    Leading edges (4)    Trailing edges (5)    Aerodynamic profile (8)    Rotary axle (9)    Cylindrical extensions (10, 17)    Hall (11)    Electric power generator (18)