Production of plasma channels in gas-jets

2007 ◽  
Author(s):  
A. Gamucci ◽  
M. Galimberti ◽  
D. Giulietti ◽  
L. A. Gizzi ◽  
T. Hosokai ◽  
...  
Keyword(s):  
Gas Jets ◽  
Plasma Channels ◽  
Title Production

Formation of plasma channels in the interaction of a nanosecond laser pulse at moderate intensities with helium gas jets

1999 ◽  
Vol 59 (6) ◽  
pp. 7110-7120 ◽  
Author(s):  
E. De Wispelaere ◽  
V. Malka ◽  
S. Hüller ◽  
F. Amiranoff ◽  
S. Baton ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Nanosecond Laser Pulse ◽  
Nanosecond Laser ◽  
Gas Jets ◽  
Plasma Channels ◽  
Helium Gas

COMPARATIVE STUDY OF TWIN-FLUID ATOMIZATION USING SONIC OR SUPERSONIC GAS JETS

1996 ◽  
Vol 6 (3) ◽  
pp. 285-304 ◽  
Author(s):  
Byung Kyu Park ◽  
Joon Sik Lee ◽  
Kenneth D. Kihm
Keyword(s):  
Comparative Study ◽  
Gas Jets

Thermal Interaction of Straight-Through and Twisted Gas Jets with a Crossflow

2006 ◽  
Vol 37 (5) ◽  
pp. 459-466
Author(s):  
B. I. Zyskin ◽  
S. S. Skachkova ◽  
K. V. Zaitsev ◽  
B. V. Berg ◽  
T. F. Bogatova ◽  
...  
Keyword(s):  
Thermal Interaction ◽  
Gas Jets

Particle velocity measurement in powder gas jets of coaxial powder nozzles for laser material deposition

2021 ◽  
Vol 33 (1) ◽  
pp. 012019
Author(s):  
Jonathan Schaible ◽  
Luis Andrea Hau ◽  
David Weber ◽  
Thomas Schopphoven ◽  
Constantin Häfner ◽  
...  
Keyword(s):  
Particle Velocity ◽  
Velocity Measurement ◽  
Laser Material ◽  
Gas Jets ◽  
Material Deposition ◽  
Particle Velocity Measurement

scholarly journals Design of Satellite Attitude Control Algorithm Based on the SDRE Method Using Gas Jets and Reaction Wheels

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Luiz C. G. de Souza ◽  
Victor M. R. Arena
Keyword(s):  
Attitude Control ◽  
Control Algorithm ◽  
Controller Design ◽  
Algorithm Design ◽  
Large Angle ◽  
Space Mission ◽  
Control Technique ◽  
Gas Jets ◽  
State Dependent ◽  
Highly Nonlinear

An experimental attitude control algorithm design using prototypes can minimize space mission costs by reducing the number of errors transmitted to the next phase of the project. The Space Mechanics and Control Division (DMC) of INPE is constructing a 3D simulator to supply the conditions for implementing and testing satellite control hardware and software. Satellite large angle maneuver makes the plant highly nonlinear and if the parameters of the system are not well determined, the plant can also present some level of uncertainty. As a result, controller designed by a linear control technique can have its performance and robustness degraded. In this paper the standard LQR linear controller and the SDRE controller associated with an SDRE filter are applied to design a controller for a nonlinear plant. The plant is similar to the DMC 3D satellite simulator where the unstructured uncertainties of the system are represented by process and measurements noise. In the sequel the State-Dependent Riccati Equation (SDRE) method is used to design and test an attitude control algorithm based on gas jets and reaction wheel torques to perform large angle maneuver in three axes. The SDRE controller design takes into account the effects of the plant nonlinearities and system noise which represents uncertainty. The SDRE controller performance and robustness are tested during the transition phase from angular velocity reductions to normal mode of operation with stringent pointing accuracy using a switching control algorithm based on minimum system energy. This work serves to validate the numerical simulator model and to verify the functionality of the control algorithm designed by the SDRE method.

Effect of conductive screens on the stabilization of plasma channels with currents of hundreds kAmps

2016 ◽  
Vol 13 (7) ◽  
pp. 788-791
Author(s):  
V. D. Bochkov ◽  
D. V. Bochkov ◽  
S. I. Krivosheev ◽  
Yu. E. Adamian
Keyword(s):  
Plasma Channels

Three-Dimensional Temporal Instability of Compressible Gas Jets Injected in Liquids

AIAA Journal ◽  
10.2514/2.714 ◽  
1999 ◽  
Vol 37 (2) ◽  
pp. 202-207 ◽  
Author(s):  
Krishnan Subramaniam ◽  
Ramkumar N. Parthasarathy ◽  
Kai-Ming Chiang
Keyword(s):  
Three Dimensional ◽  
Gas Jets ◽  
Temporal Instability ◽  
Compressible Gas
Sign in / Sign up

Export Citation Format

Share Document