PROTECTION COVERING FOR FOLDED TAIL FIN OF PROJECTILE
First Claim
1. A protection covering for folded tail fins of a projectile, the protection covering, for protecting the folded tail fins provided at a rear end of a projectile, comprising:
- a body portion having a cylindrical shape and having an inner part into which a portion of the projectile having tail fins installed thereat is inserted, whereby the tail fins are constrained;
a circular plate portion provided at a rear end of the body portion to close the rear end of the body portion; and
a combustion gas suction hole provided at a center of the circular plate portion so as to be coaxial with the circular plate portion, whereinthe rear end of the projectile is configured open;
a space corresponding to depth and width of each of the inner grooves is provided between the rear end of the projectile and each inner groove provided on the inner side surface of the circular plate portion of the protection covering;
when the projectile is inserted into the body portion, the rear end of the projectile being open is closed by the circular plate portion, whereby the inner side of the rear end portion of the projectile becomes an air pocket; and
after the projectile moves away from a gun barrel, the accumulated combustion gas flowed into the air pocket through the combustion gas suction hole during the launch of the projectile automatically separates the protection covering from the projectile by pressure applied on the inner side surface of the circular plate portion, wherein a plurality of inner grooves are provided in radial directions from the combustion gas suction hole on the inner side surface of the circular plate portion so as to increase an area of the inner side surface of the circular plate portion on which the pressure is applied in a direction to separate the protection covering.
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Accused Products
Abstract
A protection covering for folded tail fins of a projectile. The protection covering is installed to surround outer portion of the folded tail fins of the projectile and protects the tail fins against external high pressure, whereby the tail fins are not damaged even at high pressure generated in a launching process of the projectile. After the launch of the projectile, the protection covering is separated from the projectile by the pressure applied on the inner side surface of the circular plate portion of the protection covering by the accumulated combustion gas inside the air pocket. The protection covering is automatically separated from the projectile without providing any other mechanical structure immediately after the launch of the projectile, thereby providing an effect to allow the tail fins to be deployed quickly and economically.
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Citations
9 Claims
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1. A protection covering for folded tail fins of a projectile, the protection covering, for protecting the folded tail fins provided at a rear end of a projectile, comprising:
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a body portion having a cylindrical shape and having an inner part into which a portion of the projectile having tail fins installed thereat is inserted, whereby the tail fins are constrained; a circular plate portion provided at a rear end of the body portion to close the rear end of the body portion; and a combustion gas suction hole provided at a center of the circular plate portion so as to be coaxial with the circular plate portion, wherein the rear end of the projectile is configured open; a space corresponding to depth and width of each of the inner grooves is provided between the rear end of the projectile and each inner groove provided on the inner side surface of the circular plate portion of the protection covering; when the projectile is inserted into the body portion, the rear end of the projectile being open is closed by the circular plate portion, whereby the inner side of the rear end portion of the projectile becomes an air pocket; and after the projectile moves away from a gun barrel, the accumulated combustion gas flowed into the air pocket through the combustion gas suction hole during the launch of the projectile automatically separates the protection covering from the projectile by pressure applied on the inner side surface of the circular plate portion, wherein a plurality of inner grooves are provided in radial directions from the combustion gas suction hole on the inner side surface of the circular plate portion so as to increase an area of the inner side surface of the circular plate portion on which the pressure is applied in a direction to separate the protection covering. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification