Method and launcher for launching a projectile
AssigneeSaab AB
InventorMathias Lindstroem
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for launching a projectile and a launcher comprising a barrel (1) accommodating a. a projectile (2); b. a rocket motor (13) at the rear end of the projectile (2) comprising a first compartment containing a first propellant; c. a countermass (3) at the rear end of the barrel (1); and d. a second compartment between the rocket motor (13) and the countermass (3) containing a second propellant, wherein said first and second compartments form a high pressure chamber (6) subsequent to firing of the projectile (2).
Claims12
Method for launching a projectile (2) from a barrel (3) accommodating
- a. a projectile (2);
- b. a rocket motor (13) at the rear end of the projectile (2) comprising a first compartment (6″) containing a first propellant (10);
- c. a countermass (3) at the rear end of the barrel (1);
- and
- d. a second compartment (6′) between the rocket motor (13) and the countermass (3) containing a second propellant (11), wherein said first and second compartments (6″,6′) form a high pressure chamber (6) subsequent to firing of the projectile (2);
- i) wherein combustion gases originating from propellants contained in said first and second compartments (6″,6′) in said high pressure chamber (6) accelerate the projectile (2) in the firing direction and the countermass (3) in the opposite direction towards a breech;
- and
- ii) wherein the pressure in the high pressure chamber (6) falls in the second compartment to a level below the pressure in the first compartment when the countermass (3) leaves the barrel (1);
- and
- iii) wherein said first compartment upholds substantially the originally formed pressure by means of an opening of said first compartment delimiting the exhaust of gases from the first compartment to the second compartment, thus enabling continued acceleration of the projectile (2) after the countermass (3) has exited the barrel (1).
Launcher comprising a barrel (1) accommodating
- a. a projectile (2);
- b. a rocket motor (13) at the rear end of the projectile (2) comprising a first compartment containing a first propellant;
- c. a countermass (3) at the rear end of the barrel (1);
- and
- d. a second compartment between the rocket motor (13) and the countermass (3) containing a second propellant, wherein said first and second compartments form a high pressure chamber (6) subsequent to firing of the projectile (2);
- wherein a cartridge case (8) is arranged inside the barrel (1) extending from the rear end of the projectile (2) to the rear part of the countermass (3).
Dependencies are inferred from the claim text.