microplastic
Well-Known Member
Cutaway model of a Russian 57mm S-5O parachute flare rocket, used for night illumination.
The the front part of the rocket is fitted with the VB-5 fuze (3D-printed replica) and has an inner tube that houses the illumination charge with a parachute. The connection between the flare housing and the parachute was made with a ball bearing to stabilize the parachute on its way down. The rocket motor is an electrically ignited powder stick in a steel tube with an elongated eight-fin exhaust nozzle at the rear.
The rockets are launched from a horizontal flight or a flat dive from a height of about 1,500 m, illumination begins at a height of 700-750 m above the target.
When the rocket is launched, the rocket motor's igniter receives an electrical pulse and ignites the motor igniter charge. The rocket motor burns for 1.1 seconds and flies about 300 meters during this time. The wings fold out and bring the rocket to approx. 750rpm.
The setback forces the striker sleeve downwards and releases the safety ball of the spring-loaded striker. The striker hits the primer and ignites the powder train and the black-powder safety pellet of the spring-loaded pin. The pin holds the slider in safety position. When the pellet is burned out, the pin rises, releasing the slider and making the connection to the expelling charge. The sleeve has a zigzag path that slows its movement to ensure the fuze is armed at a safe distance from the aircraft. 15–19 seconds after firing, the flame of the powder train reaches the expelling charge. The pressure of the charge pushes the inner tube backwards, separating the warhead from the rocket (aluminum connector) and igniting the flare's ignition/ejection charge through three holes in the bottom of the tube . The flare is pushed out of the tube and slowly sinks to the ground on the parachute. The flare burns for about 15 seconds.
Length of the rocket : 548mm
Diameter of the rocket : 57mm
Weight of the rocket : 4.94 kg
Fuzes of the warhead : VB-5
Decent rate: 15-20m/s
Luminous intensity:1 million cd
Burning time: 15s
The the front part of the rocket is fitted with the VB-5 fuze (3D-printed replica) and has an inner tube that houses the illumination charge with a parachute. The connection between the flare housing and the parachute was made with a ball bearing to stabilize the parachute on its way down. The rocket motor is an electrically ignited powder stick in a steel tube with an elongated eight-fin exhaust nozzle at the rear.
The rockets are launched from a horizontal flight or a flat dive from a height of about 1,500 m, illumination begins at a height of 700-750 m above the target.
When the rocket is launched, the rocket motor's igniter receives an electrical pulse and ignites the motor igniter charge. The rocket motor burns for 1.1 seconds and flies about 300 meters during this time. The wings fold out and bring the rocket to approx. 750rpm.
The setback forces the striker sleeve downwards and releases the safety ball of the spring-loaded striker. The striker hits the primer and ignites the powder train and the black-powder safety pellet of the spring-loaded pin. The pin holds the slider in safety position. When the pellet is burned out, the pin rises, releasing the slider and making the connection to the expelling charge. The sleeve has a zigzag path that slows its movement to ensure the fuze is armed at a safe distance from the aircraft. 15–19 seconds after firing, the flame of the powder train reaches the expelling charge. The pressure of the charge pushes the inner tube backwards, separating the warhead from the rocket (aluminum connector) and igniting the flare's ignition/ejection charge through three holes in the bottom of the tube . The flare is pushed out of the tube and slowly sinks to the ground on the parachute. The flare burns for about 15 seconds.
Length of the rocket : 548mm
Diameter of the rocket : 57mm
Weight of the rocket : 4.94 kg
Fuzes of the warhead : VB-5
Decent rate: 15-20m/s
Luminous intensity:1 million cd
Burning time: 15s
