Experimental Studies of the Helicon Injected Inertial Plasma Electrostatic Rocket (HIIPER)

Ahern, Drew M.; Al-Rashdan, Hussein; Altun, Oguzhan; Berland, Grant; Broemmelsiek, Emil; Chen, Zhengyu; Choakpichitchai, Patchara; Dong, Zongxu; Drew, Patrick D.; Richardson, Nicklaus O.; St.Lawrence, Nicholas; Stanevich, Kyle; Valiaveedu, Albert; Miley, George H.

doi:10.2514/6.2017-4629

Cited by 4 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3 Furthermore, an advanced space propulsion concept, which is known as the Helicon Injected Inertial Plasma Electrostatic Rocket (HIIPER) including a helicon plasma source and a modified IEC, is proposed. 6 The helicon source is to generate a high-density plasma, and the IEC grids is to extract the ions and produce a thrust. Note that a jet of electrons is produced by the IEC grids for a neutralized plasma exhaust.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, ion flow rate is an important parameter to investigate in this paper. Additionally, considering that Williams et al, 7 used a magnetically shielded anode to bias the discharge plasma potential and electrostatic grids for ion acceleration, Ahern et al, 6 added a grid on the upstream end of the helicon section, which is biased to positive voltages to enhance the downstream flow velocity. By using the ion tracking simulations of the computational program COMSOL Multiphysics, it is found that bias voltage could significantly influence the velocity of ions passing through the IEC grid setup in the simulation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Untitled

2020

AAOAJ

View full text Add to dashboard Cite

The Helicon Injected Inertial Electrostatic Confinement (IEC) offers an attractive D-D neutron source for neutron commercial and homeland security activation neutron analysis. Designs with multiple injectors also provide a potential route to an attractive small fusion reactor. Use of such a reactor has also been studied for deep space propulsion. In addition, a non-fusion design been studied for use as an electric thruster for near-term space applications. The Helicon Inertial Plasma Electrostatic Rocket (HIIPER) is an advanced space plasma thruster coupling the helicon and a modified IEC. A key aspect for all of these systems is to develop efficient coupling between the Helicon plasma injector and the IEC. This issue is under study and will be described in this presentation. To analyze the coupling efficiency, ion flow rates (which indicate how many ions exit the helicon and enter the IEC device per second) are investigated by a global model. In this simulation particle rate and power balance equations are solved to investigate the time evolution of electron density, neutral density and electron temperature in the helicon tube. In addition to the Helicon geometry and RF field design, the use of a potential bias plate at the gas inlet of the Helicon is considered. Biasing the plasma potential can increase the downstream ion velocity, but the optimal bias is a complex function of the Helicon parameters. In general, the results indicate that ion flow rate could be optimized by increasing the power supply, properly modifying the helicon tube length, radius and bias plate voltage. The selection of helicon configuration parameters, including power supply, helicon tube length, radius and bias voltage to optimize ion flow rates in a steady-state discharge are quantitatively presented based on the developed global model. This provides a guide for future experiments plus further investigations using 2 and 3 D modeling.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%