PROPELLER

1 . A method of manufacturing a propeller having a plurality of blades, each of the plurality of blades having an intake portion, an exhaust portion, and a tip portion extending from the intake portion to the exhaust portion, the method comprising:

defining a plurality of parameter sections by selecting some of the parameters including skew angle, roll angle, rake, radius, pitch angle, vertical angle values;

defining a parameter section at the transition from the intake portion to the tip portion by parameters to cause the amount of non-axial lift in the tip portion to be greater than the axial lift in the tip portion; and

extrapolating between parameter sections to form smooth lines to form a blade configured to form a loop when attached to a hub.

2 . The method of claim 1 further comprising defining parameter sections to include a roll value of 90 degrees in the tip portion.

3 . The method of claim 1 further comprising defining parameter sections so a root of the exhaust portion is forward of a root of the intake portion when extending outward from the hub, and skew continually decreases.

4 . The method of claim 1 comprising aligning the parameter sections along a non-helical median line.

5 . The method of claim 1 further comprising forming the hub having a plurality of the blades extending outward from the hub and disposed around the hub.

6 . The method of claim 1 comprising defining one or more parameters for parameter sections by parameters to cause the amount of non-axial lift in the intake portion to be less than the non-axial lift in tip portion.

7 . The method of claim 1 comprising defining one or more parameters for parameter sections by parameters to cause the amount of non-axial lift in the exhaust portion to be less than the non-axial lift in the tip portion.

8 . The method of claim 1 comprising selecting parameters for parameter sections such that the tip portion has a 90 degree roll angle closer to the exhaust portion than to the intake portion.

9 . The method of claim 1 wherein the parameter sections are planar.

10 . A propeller comprising:

a plurality of blades, each of the plurality of blades having an intake portion, an exhaust portion, and a tip portion extending from the intake portion to the exhaust portion;

a hub;

the plurality of blades extending outward from the hub and disposed around the hub;

each blade forming a loop;

each blade comprising a plurality of parameter sections having selected some of the parameters including skew angle, roll angle, rake, radius, pitch angle, vertical angle values;

a parameter section at the transition from the intake portion to the tip portion defined by parameters to cause the amount of non-axial lift in the tip portion to be greater than the axial lift in the tip portion;

a parameter section or area between consecutive parameter sections in the tip portion having a roll value of 90 degrees; and

a root of the exhaust portion is forward of a root of the intake portion when extending outward from the hub, and skew is continually decreasing.

11 . The propeller of claim 10 comprising the plurality of blades each having an irregular helical median line.

12 . The propeller of claim 10 wherein the plurality of blades are configured so non-axial lift in the intake portion is less than non-axial lift in tip portion.

13 . The propeller of claim 10 wherein the plurality of blades are configured so the amount of non-axial lift in the exhaust portion to be less than the non-axial lift in the tip portion.

14 . The propeller of claim 10 wherein the tip portion has a 90 degree roll angle closer to the exhaust portion than to the intake portion.