Exterior ballistics activities at the ISL Open Range test site · at the ISL Open Range test site...
Transcript of Exterior ballistics activities at the ISL Open Range test site · at the ISL Open Range test site...
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Exterior ballistics activities at the ISL Open Range test site
ISL has skills in the domain of exterior ballistics, covering all the processes from model and sabot designs to the aerodynamic characterization of vehi-cles in free � ight. In this sense, free � ight experiments – with several types of architectures – can be conducted at the ISL open range test site located in Baldersheim, about 25 km north of Saint-Louis.
Objectives: aerodynamic characterization of architectures, sensor perfor-mance evaluation, analysis of behavior of vehicles in � ight, etc.
Characteristics• Velocity regimes from Mach 0.6
to 5.0
• 4 � relines from 50 m to 1000 m
• Ri� ed or smooth bore guns from Ø 20 to 105 mm
ISL – French-German Research Institute of Saint-Louis Business Development Of� ce: [email protected] rue du Général Cassagnou • 68301 Saint-Louis • France
Trajectory trackers
Soft recovery unit
Fireline 230 m
10.5 Ghz radar
Sand bay with targetLauncher: 105 mm smooth bore gun
Sky screensMuzzle flash detectorPanoramic view of a � reline and experimental setup
Examples of studied architectures• spin-stabilized model
from Ø 20 to 105 mm
• � n-stabilized modelfrom Ø 10 to 98 mm
• sub-scale space probes mounted in the sabot and guiding the models within the launcher
Measurement techniquesSeveral measurement techniques can be deployed to obtain free � ight data:
• Doppler Radar
• Embedded sensors: magnetometers, accelerometers, gyrometers, pres-sure transducers, …
• 3D high speed optical system composed of two trajectory trackers
Free-� ight measurements Vehicle aerodynamic characterization
Snapshots of the sabot separation of a long range projectile obtained from the two trajectory trackers