First Diagnostic Tests of a 75mm Solid-Fuel Ramjet Tubular Projectile
Abstract
A series of six prototype 75mm solid-fuel ramjet tubular (SFRJ) projectiles were tested at the Ballistic Research Laboratories Transonic Range Facility during June 1982. The purpose of the tests was to evaluate the performance of the SFRJ projectile with a new cowl configuration and with various size nozzles and inlet steps. The firings were instrumented with cameras and a Hawk radar to provide information on structural integrity, sabot performance, flight stability, fuel ignition, and drag. All rounds were fired at velocities near 1,500 m/s and good radar data were obtained. Although some yaw was visually observed on all flights, no instabilities were detected. One round experienced structural failure. Four rounds demonstrated successful autoignition with burn times in the order of two seconds. Finally, one round experienced a long burn time of about eight seconds, an anomalous performance. Further tests are planned to determine aerodynamic coefficients, fuel performance parameters, and consistency of burn time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1983
- Accession Number
- ADA130598
Entities
People
- Rao J. Yalamanchili
- William H. Mermagen
Organizations
- Ballistic Research Laboratory