Projectile fuze

A missile fuse, comprising:

• an ignition device (12);
• and
• a security means (30), intended to enable ignition of a missile only under predetermined conditions, including a detection device (35) configured i) to be sensitive to a dynamic air pressure arising at the missile (11) in flight, and ii) to enable ignition of the missile when the dynamic pressure attains a predetermined value of dynamic pressure corresponding to a given speed of the missile, and further configured to prevent ignition of the missile when the dynamic pressure does not attain the predetermined pressure value,
• wherein the detection device comprises a detector element (36) configured to be, under the influence of the dynamic air pressure, any of displaced and deformed, so as to enable ignition if the dynamic pressure attains the predetermined value, and to prevent ignition if the dynamic pressure does not attain the predetermined pressure value,
• wherein the detector element (36, 50) is configured to occupy either of a rest position and an ignition-enabling position,
• wherein the security means (30) are configured to definitively prevent the detector element (36, 50) from occupying the ignition-enabling position when the value of dynamic pressure is not attained after a predetermined period of time counted from missile launch, and
• wherein the detector element (36, 50) cooperates with a mobile mechanical element (14), the mobile mechanical element (14) configured to be displaceable from an initial position to an ignition position after launch of the missile, the detector element (36, 50) being configured i) to prevent the mobile mechanical element (14) from being displaced to the ignition position when the value of dynamic pressure is not attained, and ii) to move away from the mobile mechanical element, and thereby not prevent the mobile mechanical element (14) from being displaced to the ignition position, when the value of dynamic pressure is attained.

A missile fuse, comprising:

• an ignition device (12);
• and
• a security means (30) , intended to enable ignition of a missile only under predetermined conditions, including a detection device (35) configured i) to be sensitive to a dynamic air pressure arising at the missile (11) in flight, and ii) to enable ignition of the missile when the dynamic pressure attains a predetermined value of dynamic pressure corresponding to a given speed of the missile, and further configured to prevent ignition of the missile when the dynamic pressure does not attain the predetermined pressure value,
• wherein the detection device comprises a detector element (36) configured to be, under the influence of the dynamic air pressure, any of displaced and deformed, so as to enable ignition if the dynamic pressure attains the predetermined value, and to prevent ignition if the dynamic pressure does not attain the predetermined pressure value, and
• wherein the detector element (36) is housed in a chamber (37) of the fuse and linked by a channel (40) to a hole (41) situated in a front section (42) of the fuse,
• wherein the detector element comprises a transmission element (50) configured i) to enable ignition and ii) to interrupt an ignition process, and
• wherein the detector element (36, 50) cooperates with a mobile mechanical element (14), the mobile mechanical element (14) configured to be displaceable from an initial position to an ignition-enabling position after launch of the missile, the detector element (36, 50) being configured i) to prevent the mobile mechanical element (14) from being displaced to the ignition position when the value of dynamic pressure is not attained, and ii) to move away from the mobile mechanical element, and thereby not prevent the mobile mechanical element (14) from being displaced to the ignition position, when the value of dynamic pressure is attained.