# Accession Number:

## AD0829606

# Title:

## TRAJECTORY PARAMETERS AND MISS COEFFICIENTS FOR FREE-FALL BALLISTIC TRAJECTORIES,

# Descriptive Note:

# Corporate Author:

## GENERAL DYNAMICS/ASTRONAUTICS SAN DIEGO CA

# Personal Author(s):

# Report Date:

## 1958-02-28

# Pagination or Media Count:

## 31.0

# Abstract:

It is assumed in the report that all trajectories are based upon an object being launched with an initial velocity at a specific launch angle. There is no powered flight. The earth is assumed to be spherical and non-rotating with a vacuum atmosphere. For any desired earth range there is an infinite family of trajectory paths which will give that range. The main parameter chosen to describe these different paths is the eccentricity of the elliptical trajectory. In the curves showing the trajectory results the eccentricity is chosen as the independent variable. The following trajectory parameters are plotted as a function of range and eccentricity a initial launch velocity b initial launch angle c time of flight d error in range due to an error in the initial magnitude of the velocity when the launch angle is held fixed. e error in range due to an error in the velocity which is perpendicular to the initial velocity direction when the velocity magnitude is held fixed. Author

# Descriptors:

# Subject Categories:

- Guided Missile Trajectories, Accuracy and Ballistics
- Guided Missiles