Aerodynamic Characteristic of the A3 DRDC-ISL Reference Projectile – Missile with Lattice Fins

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Authors
  1. Dupuis, A.
  2. Berner, C.
  3. Bernier, A.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);Institut Franco-Allemand de Recherches, Saint-Louis (France);SNC Technologies Inc, Le Gardeur QUE (CAN)
Abstract
Free-flight tests were conducted in the Defence R&D Canada (DRDC) Valcartier aeroballistic range and at the ISL open range test site and wind tunnel experiments in the DRDC Valcartier Indraft Trisonic and the French German Research Institute wind tunnels as well as numerical computations on the A3 DRDC-ISL reference projectile at subsonic and supersonic velocities. The projectile consisted of an ogive-cylinder body with a length-to-diameter ratio of 10 with four lattice control surfaces. The reference grid fin consisted of nine thick cells in a vertical orientation and located at 0.7 cal from the base. The wind tunnel tests were conducted for various fin deflection angles at a range of angles of attack and roll orientations to determine the static aerodynamic coefficients. Very thin walls, an open base concept as well as a cruciform cell orientation were also investigated in the wind tunnels. Flow visualizations were obtained from wind tunnel as well as free-flight tests. The wind tunnel tests were conducted in the Mach number range of 0.6 to 4.0, while the free-flight tests were conducted in the Mach number range of 1.4 to 3.3. The stability derivatives and static aerodynamic coefficients were very well determined. Numerical investigations were carried out on the reference configuration to visualize the flow features and obtain predictions of the aerodynamic coefficients. The aerodynamic coefficients and stability derivatives are presented individually and then compared wher

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Keywords
FREE-FLIGHT TESTS;CFD ANALYSIS;LATTICE FINS;GRID FINS;SUPERSONIC;SUBSONIC;TRANSONIC;AERODYNAMICS COEFFICIENTS;STABILTY DERIVATIVES;FLIGHT DYNAMICS;CHOKED FLOW;AEROBALLISTIC RANGE TESTS;MLM METHODOLOGY;TRAJECTORY ANALYSIS;MACH NUMBER;REYNOLDS NUMBER
Report Number
DRDC-VALCARTIER-TR-2005-216 — Technical Report
Date of publication
01 Aug 2005
Number of Pages
282
DSTKIM No
CA026195
CANDIS No
524000
Format(s):
CD ROM

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