Accession Number : AD0724296

Title :   Smoothing and Differentiation of Tracking Data Taken Across Separation Impulse.

Descriptive Note : Technical memo.,

Corporate Author : NAVAL WEAPONS LAB DAHLGREN VA

Personal Author(s) : Frick,Charles H.

Report Date : MAY 1961

Pagination or Media Count : 25

Abstract : Data observed before and after 'separation', a sudden change in the force system, are used to estimate motion before, during and after 'separation'. Polynomial methods are used and since a single polynomial of low degree cannot reflect the physical phenomena of motion through separation three polynomials are used and chosen in such a way as to make position, velocity and acceleration continuous. This is done by assuming a constant acceleration before separation, an acceleration which is quadratic in time during separation, and another value of constant acceleration after separation. (Author)

Descriptors :   (*ROCKET TRAJECTORIES, *CURVE FITTING), UNDERWATER ROCKETS, HOMING TORPEDOES, TRACKING, LEAST SQUARES METHOD, POLYNOMIALS, EQUATIONS OF MOTION, VELOCITY, ACCELERATION

Subject Categories : Statistics and Probability
      Armor

Distribution Statement : APPROVED FOR PUBLIC RELEASE