# US 7,410,119 B2 · Rotating missile emitting light pulses

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- Number: US 7,410,119 B2
- Document ID: US7410119B2
- Status: Granted
- Kind: B2
- Application number: 10/558,741
- Filed: 2004-07-01
- Published: 2006-11-16
- Granted: 2008-08-12
- Earliest claimed: 2003-07-04
- Assignees: Mbda France
- Inventors: Fabienne Leon; Bernard Teneze; Franck Bernoux
- Web page: https://patentgrep.com/patent/US7410119B2

## CPC

- F41G 7/305: {for spin-stabilized missiles}
- H04B 10/1121: {One-way transmission}
- F41G: WEAPON SIGHTS; AIMING (optical aspects thereof G02B)
- H04B: TRANSMISSION

## Abstract

The invention concerns a rotating missile emitting light pulses. The invention is characterized in that means are provided to interrupt said light pulses (5) when the rotational movement (3) of the missile (2) about its longitudinal axis (L-L) stops.

## Claims

### Claim 1

A missile provided with an emitter of light pulses addressed to a receiver disposed at a fixed post, said missile receding from said receiver while being impressed with a rotational motion about its longitudinal axis (L-L), said missile further including a light interruption section for interrupting said light pulses when said rotational motion of said missile stops.

### Claim 2 (depends on 1)

The missile as claimed in claim 1, wherein said light interrupting section masks the light pulses.

### Claim 3 (depends on 1)

The missile as claimed in claim 1, wherein said light interrupting section halts the operation of said emitter.

### Claim 4 (depends on 3)

The missile as claimed in claim 3, wherein said emitter is controlled by an electronic control device, and said light interrupting section halts the operation of said electronic control device.

### Claim 5 (depends on 3)

The missile as claimed in claim 3, wherein said emitter is controlled by an electronic control device, and said light interrupting section disables the control link between said electronic device and said emitter.

### Claim 6 (depends on 1)

The missile as claimed in claim 1, further comprising a roll detector for said missile emitting roll pulses each of which corresponds to a specific angular position of said missile about said longitudinal axis (L-L), wherein said roll detector controls said light interrupting section.

### Claim 7 (depends on 6)

The missile as claimed in claim 6, wherein said light interrupting section interrupts the light pulses with delay with respect to the detection of a first missing roll pulse.

### Claim 8 (depends on 7)

The missile as claimed in claim 7, wherein said light interrupting section interrupts the light pulses after a duration (D) corresponding to at least two periods (T) of said roll pulses, said duration being metered from a last roll pulse detected by said roll detector.

### Claim 9 (depends on 6)

The missile as claimed claim 6, wherein said light interrupting section comprises a systematic meter permanently metering at a higher frequency than the frequency of said roll pulses, said systematic meter is reset to zero and reinitialized by each roll pulse that it receives and, in case of absence of a roll pulse, said systematic meter emits a signal after metering up to a predetermined number, starting from a last roll pulse received.