Method of making a flexprop

Details Method of making a flexprop Method of making a flexprop

1990-05-07

1992-05-12

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Impeller making

298896, 298897, 416DIG3, 446217, 446218, B21K 304

Patent

active

051115760

ABSTRACT:
A grenade device for use with and for ejection from an artillery shell is ovided. The device includes a stabilizing propeller and a grenade body. The propeller has two opposite blades disposed on opposite sides of a rotation axis. Each blade has an upper tilted portion and a lower substantially flat portion and a connecting return bend tip portion. Each such portion has a leading edge and a trailing edge. Each upper tilted portion has a transverse angle of attack. The upper tilted portions have a common longitudinal upper projected axis. The lower flat portions also have a common longitudinal lower projected axis. The common longitudinal upper projected axis and the common longitudinal lower projected axis form a projected displacement angle therebetween. The propeller is made from a flexible metal or fabric ribbon. The blades are folded in a nested arrangement before descent. During descent, the blades unfold to their overall aerodynamic shape. The propeller has a windmill type of rotation during descent. The grenade body may have an alternator as part of an electronic fuze, which is connected to a shaft, that is connected to the propeller coaxially therewith along the rotation axis for energizing the alternator.

REFERENCES:
patent: 1443585 (1923-01-01), Mitchel et al.
patent: 1639943 (1927-08-01), Heberling
patent: 3974369 (1976-08-01), Chmela et al.
patent: 4445817 (1984-05-01), Wethern

Affiliated with

Also associated with

Rating

Method of making a flexprop does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making a flexprop, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a flexprop will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2422664