Calculating velocities to be gained in positioning

  • Thread starter beansbaxter
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In summary, the conversation is discussing the need for a formula to calculate the velocities needed for a target delivery system launched from a mobile platform at sea to hit a stationary land target. The formula must take into account various corrections, such as roll, pitch, heading, and air density. The computations involve three different reference planes and it is unclear what exactly the equation should be. More information or context is needed to determine the specific equation.
  • #1
beansbaxter
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0
Problem:
I am looking for a formula necessary to caculate velocities to be gained in positioning a target delivery system at a target point prior to reentry vehicle delivery. The delivery system will be launched from a mobile platform at sea. The corrections that need to be considered and included are:

-roll
-pitch
-heading
-deflection correction of launch platform in x,y & z axis
-correction of delivery system misalignment with reference to launch platform
-local gravity
-earth rotational speed

The formula is necessary to calculate the requisite velocities needed to strike a stationary land target with a ballistic object released from a delivery system. It will be assumed that the delivery system will be at 0 vbg (Velocities to Be Gained).

The only corrections to be considered are:
-air density
-wind direction above target

All I can come up with so far is this:
The actual computations go across three different reference planes. There's the launch platform reference plane, which is resolved about the physical frame into what's called the 'computing reference' plane, and that in turn is used to calculate the velocity to be gained values to be used in the delivery system reference plane.
 
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  • #2
do you need differential equations which you are going to integrate?
or just an answer directly: VBG=...?
 
  • #3
Just the equation is all I am in desperate need of...
 
  • #4
sorry, but from your description it is still not clear to me what "THE" equation should be like. I doubt one would start out with only one equation though.
Maybe you could give some more background (is this some project, an exam question) or some more info.
 

1. What is the equation for calculating velocities to be gained in positioning?

The equation for calculating velocities to be gained in positioning is Δv = vf - vi, where Δv is the change in velocity, vf is the final velocity, and vi is the initial velocity.

2. How is this equation used in scientific research?

This equation is commonly used in scientific research to determine the necessary velocities for a spacecraft or satellite to reach a desired orbit or trajectory. It is also used in physics experiments to calculate the velocity of an object before and after a force is applied.

3. What units are typically used for velocity in this equation?

Velocity is typically measured in meters per second (m/s) or kilometers per hour (km/h) in this equation. However, any unit of distance divided by unit of time can be used as long as it is consistent throughout the equation.

4. How is this equation related to Newton's Second Law of Motion?

The equation for calculating velocities to be gained in positioning is essentially a simplified version of Newton's Second Law of Motion, which states that force is equal to mass times acceleration (F=ma). By rearranging the equation to solve for acceleration (a = Δv/t) and then substituting for force using Newton's Second Law (F = ma), we arrive at the equation Δv = FΔt/m. This is equivalent to the original equation, with force and time being the factors that contribute to the change in velocity.

5. Can this equation be used for non-linear motion?

Yes, this equation can be used for non-linear motion as long as the initial and final velocities are known. It can also be used for objects that undergo changes in velocity over a period of time, rather than just a single instant. In these cases, the equation may need to be modified to account for the different velocities at various points in time.

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