Laser-beam optimization for momentum transfer by laser-supported detonation waves
Abstract
Momentum transfer from a laser-supported detonation wave to a solid target has been studied by means of a time-dependent, two-dimensional, two-temperature Lagrangian hydrodynamics code. Its dependence on laser pulse length has been calculated and pulse length conditions obtained for optimizing impulse transfer to a target of finite area embedded in a larger plane surface, taking into account the laser coupling efficiency. Computer solutions are compared with existing analytical models for laser-induced surface pressures and impulse, and a summary is given of the pulse time regime of applicability of blast-wave models proposed by previous investigators. Scaling laws are given for optimized pulses that predict the laser parameters required to deliver a given impulse to a target of given area in an atmosphere of given density.
- Publication:
-
AIAA Journal
- Pub Date:
- November 1977
- DOI:
- 10.2514/3.7459
- Bibcode:
- 1977AIAAJ..15.1597F
- Keywords:
-
- Computer Techniques;
- Detonation Waves;
- Hydrodynamic Equations;
- Momentum Transfer;
- Pulsed Lasers;
- Acoustic Velocity;
- Blast Loads;
- Optimization;
- Scaling Laws;
- Lasers and Masers