Laser boresight kit and method of alignment

Claim 2

A boresight kit for accurately aligning components of a weapon system on an airplane comprising: means for establishing a plane of reference in front of the airplane at right angles to its armament datum line comprising a rectangular frame, having horizoNtal and vertical members, which is attached to the nose of the airplane; a source of laser light mounted so as to direct the emitted laser light beam perpendicular to the reference plane; means attached to a component of the weapon system for reflecting the laser light to thereby enable alignment of said component; and a target for receiving the reflected light.

Claim 3

The device of claim 1 wherein the rectangular frame has a measuring bar positioned vertically across the frame and mounted to roll along the horizontal members of the frame.

Claim 4

The device of claim 2 wherein the source of laser light is slidably mounted on the measuring bar.

Claim 5

A boresighting apparatus comprising: a boresight board positioned perpendicularly with respect to an aircraft fuselage centerline; a laser source means for producing a first beam of light directed towards a beamsplitter means mounted on said boresight board at a point corresponding to a reference line parallel to or coincident with said aircraft fuselage centerline; a pentaprism means adjustably mounted on said boresight board and having a position corresponding to the axis of a properly positioned gun barrel mounted on said aircraft, said beamsplitter means emitting second and third beams of light which are perpendicular with respect to one another; means for aligning said third beam of light to correspond to said reference line, said second beam of light being directed to said pentaprism means which converts said second beam of light into a fourth beam of light which is parallel to said third beam of light, wherein said fourth beam of light corresponds to the axis of said properly positioned gun barrel such that gun barrel alignment may be checked or adjusted.

Claim 6

A boresighting apparatus comprising: a boresight board positioned perpendicularly with respect to an aircraft fuselage centerline; a laser source means for producing a first beam of light directed towards a beamsplitter means mounted on said boresight board at a point corresponding to a reference line parallel to or coincident with said aircraft fuselage centerline; a pentaprism means adjustably mounted on said boresight board and having a position corresponding to the axis of a properly positioned gun barrel mounted on said aircraft, said beamsplitter means emitting second and third beams of light which are perpendicular with respect to one another; means for aligning said third beam of light to correspond to said reference line, said second beam of light being directed to said pentaprism means which converts said second beam of light into a fourth beam of light which is parallel to said third beam of light, wherein said fourth beam of light corresponds to the axis of said properly positioned gun barrel such that gun barrel alignment may be checked or adjusted.

Claim 7

The device of claim 4 wherein said beamsplitter is of a pentaprism configuration.

Claim 8

A boresight jig comprising: a base member adapted to be rotatably mounted about and perpendicular to a line parallel to or coincident with an aircraft fuselage centerline; first pentaprism means mounted on the pivotal axis of said base member for receiving a first beam of light from a laser source and emitting a secon beam of light perpendicular thereto; and second pentaprism means mounted on said base member for receiving said second beam of light and emitting a third beam of light perpendicular thereto, wherein two of said beams of light form respectively parallel reference lines so that aircraft equipment may be properly aligned with respect thereto.

Claim 9

A boresight jig comprising: a base member adapted to be rotatably mounted about and perpendicular to a line parallel to or coincident with an aircraft fuselage centerline; first pentaprism means mounted on the pivotal axis of said base member for receiving a first beam of light from a laser source and emitting a secon beam of light perpendicular thereto; and second pentaprism means mounted on said base member for receiving said second beam of light and emitting a third beam of light perpendicular thereto, wherein two of said beams of light form respectively parallel reference lines so that aircraft equipment may be properly aligned with respect thereto.

Claim 10

The boresighting jig of claim 6 wherein said laser source is mounted on said base member.

Claim 11

The boresighting jig of claim 6 wherein said first pentaprism is a beamsplitter.