Accession Number : ADD017697

Title :   Communication with Reentry Vehicle through Modulated Plasma.

Descriptive Note : Patent, Filed 23 May 94, patented 18 Jul 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Hesse, Philip W ; Uhm, Han U ; Choe, Joon

Report Date : 18 Jul 1995

Pagination or Media Count : 5

Abstract : Signal antennae are mounted on the casing wall between forward nose and rear tail ends of an aerospace launched vehicle for radio communication through a radiation conducting sheath of plasma formed thereon by atmospheric ionization during descent of the vehicle along a non-gliding reentry path. The reentry path is maintained by vehicle guidance at a steep angle in response to data transmitted to the antennae through the radiation conducting sheath having a plasma content minimized by cooling which is thereby maintained in complete surrounding relation to the vehicle and modulated to enhance data transmission during the entire duration of vehicle descent.

Descriptors :   *RADIO TRANSMISSION, *PATENTS, *PLASMA SHEATHS, *GUIDED MISSILE ANTENNAS, REENTRY VEHICLES, ANGLES, ATMOSPHERE ENTRY, DATA TRANSMISSION SYSTEMS, TAIL ASSEMBLIES, COOLING, MODULATION, RADIO SIGNALS, NOSES, DESCENT, GLIDING, DESCENT TRAJECTORIES

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE