MK 13 Launcher

Sea Demon · 02-01-08, 09:37 PM

I've watched some video's of the MK13 Launcher in action with Standard Missiles. In those videos, it seems that the launcher/missile is angled upwards about 10-15 degrees or so, and the missile comes off the rail and moves away from the surface of the water. In the game, the missile comes off the rail straight, and flies a trajectory parallel to the surface of the water and very low to the surface. Why the difference?

This video shows what I'm talking about:

caymanlee · 02-02-08, 03:40 AM

1st, It's a simulation, so the accuracy somehow swing

2nd, It depends what kind of it's target is: AIR or Ship, High or Low

3rd, a more sophisticated doctrine can make it more real

ASWnut101 · 03-04-08, 08:49 PM

Perhaps it's so the missile doesn't hit the sea during launch, especially if the OHP (or launching platform) is in rougher seas. You have to take into account that gravity will pull the missile down a bit during its launch, and in high seas that could cause the missile to hit the water.

Just my guess.

GGLurch · 07-30-08, 04:49 AM

Rougher seas are automatically compensated by gyros and the launcher itself is changing his elevation accordingly.

The SM-1 is alinging itself after launch to follow a guidance radar beam to the target. The missile control radar is actually switching to CWI (continuous wave illumination) with a random frequency. This is to make sure the missle is following the right path and never loses contact with the radar if more than one missle is in the air and more than one ship is controlling them. Loosing contact will initiate a selfdestruct sequence. The chosen frequency is sent to the missle during the launch process using a plug right next to the exaust. This is (incl. chosing the frequency) also one of the reasons, why the lauch takes app. 2s from pressing the button `til "Bird away". The missle is alinging itself "on the" CWI-beam by reading the reflected signal from the target in the nose cone and by receiving the radarsignal from the radar itself in one of the side (longer) fins. The high start point ensures proper alingment to "ride the beam" to the target. It ensures, that the missle actually finds the radar beam it is suppose to follow.

You can download these info on the internet. e.g. try "radar guided SM-1 CWI"

I think to simulate that in DW is actually not necessary, since the homing technique is not simulated as such.

02-01-08, 09:37 PM	#1
Sea Demon Ocean Warrior Join Date: Mar 2004 Location: USA Posts: 2,552 Downloads: 33 Uploads: 0	MK 13 Launcher I've watched some video's of the MK13 Launcher in action with Standard Missiles. In those videos, it seems that the launcher/missile is angled upwards about 10-15 degrees or so, and the missile comes off the rail and moves away from the surface of the water. In the game, the missile comes off the rail straight, and flies a trajectory parallel to the surface of the water and very low to the surface. Why the difference? This video shows what I'm talking about:

03-04-08, 08:49 PM	#3
ASWnut101 Admiral Join Date: Sep 2006 Location: USA Posts: 2,021 Downloads: 9 Uploads: 0	Perhaps it's so the missile doesn't hit the sea during launch, especially if the OHP (or launching platform) is in rougher seas. You have to take into account that gravity will pull the missile down a bit during its launch, and in high seas that could cause the missile to hit the water. Just my guess. __________________

02-02-08, 03:40 AM	#2
caymanlee Medic Join Date: Apr 2005 Location: Centre Posts: 161 Downloads: 32 Uploads: 0	1st, It's a simulation, so the accuracy somehow swing 2nd, It depends what kind of it's target is: AIR or Ship, High or Low 3rd, a more sophisticated doctrine can make it more real

07-30-08, 04:49 AM	#4
GGLurch Nub Join Date: Jul 2006 Posts: 4 Downloads: 20 Uploads: 0	Rougher seas are automatically compensated by gyros and the launcher itself is changing his elevation accordingly. The SM-1 is alinging itself after launch to follow a guidance radar beam to the target. The missile control radar is actually switching to CWI (continuous wave illumination) with a random frequency. This is to make sure the missle is following the right path and never loses contact with the radar if more than one missle is in the air and more than one ship is controlling them. Loosing contact will initiate a selfdestruct sequence. The chosen frequency is sent to the missle during the launch process using a plug right next to the exaust. This is (incl. chosing the frequency) also one of the reasons, why the lauch takes app. 2s from pressing the button `til "Bird away". The missle is alinging itself "on the" CWI-beam by reading the reflected signal from the target in the nose cone and by receiving the radarsignal from the radar itself in one of the side (longer) fins. The high start point ensures proper alingment to "ride the beam" to the target. It ensures, that the missle actually finds the radar beam it is suppose to follow. You can download these info on the internet. e.g. try "radar guided SM-1 CWI" I think to simulate that in DW is actually not necessary, since the homing technique is not simulated as such.