Performance characterization of pneumatic single pellet injection system

Conference · Fri Jan 01 00:00:00 EST 1982

OSTI ID:5634276

Schuresko, D D; Milora, S L; Hogan, J T; Foster, C A; Combs, S K

The Oak Ridge National Laboratory single-shot pellet injector, which has been used in plasma fueling experiments on ISX and PDX, has been upgraded and extensively instrumented in order to study the gas dynamics of pneumatic pellet injection. An improved pellet transport line was developed which utilizes a 0.3-cm-diam by 100-cm-long guide tube. Pellet gun performance was characterized by measurements of breech and muzzle dynamic pressures and by pellet velocity and mass determinations. Velocities up to 1.4 km/s were achieved for intact hydrogen pellets using hydrogen propellant at 5-MPa breech pressure. These data have been compared with new pellet acceleration calculations which include the effects of propellant friction, heat transfer, time-dependent boundary conditions, and finite gun geometry. These results provide a basis for the extrapolation of present-day pneumatic injection system performance to velocities in excess of 2 km/s.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5634276
• Report Number(s): CONF-8210204-1; ON: DE84001954
• Resource Relation: Conference: American Vacuum Society meeting, Baltimore, MD, USA, 16 Oct 1982
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
FUEL PELLETS
INJECTION
ISX TOKAMAK
REACTOR FUELING
PDX DEVICES
HYDROGEN
MASS
PERFORMANCE
VELOCITY
CLOSED PLASMA DEVICES
ELEMENTS
INTAKE
NONMETALS
PELLETS
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS
700205* - Fusion Power Plant Technology- Fuel
Heating
& Injection Systems