Accession Number : ADD013373

Title :   Simple Diver Reentry Method.

Descriptive Note : Patent, Filed 20 Jun 85, patented 5 May 87,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Nelson, Robert L

Report Date : 05 May 1987

Pagination or Media Count : 9

Abstract : A method for compensating for pre-reentry errors generated by the weapon delivery system to provide a reduced impact range error dispersion over that provided by a ballistic trajectory after reentry comprising maneuvering the reentry body after reentry so that the terminal flight direction is essentially in line with the line of means of the reentry body's position-error ellipse that exists just prior to reentry. The reentry, a dive maneuver including an optional pullup leg and a pulldown leg to establish the required terminal direction, and a terminal ballistic leg to impact. The required maneuvering is accomplished by modulating the aerodynamic lift of the reentry body by controlling the reentry body's roll orientation.

Descriptors :   *ATMOSPHERE ENTRY, *BALLISTIC TRAJECTORIES, *PATENTS, *MANEUVERABLE REENTRY VEHICLES, AERODYNAMIC LIFT, DIRECTIONAL, DIVERS, DIVING, FLIGHT, MANEUVERS, ORIENTATION(DIRECTION), REENTRY VEHICLES, WEAPON DELIVERY, REENTRY VEHICLES, GROUND ROLL(AERONAUTICS)

Subject Categories : Guided Missile Reentry Vehicles
      Ballistics
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE