相关实验视频
Updated: May 17, 2025

12:22
Optimization, Test and Diagnostics of Miniaturized Hall Thrusters
Published on: February 16, 2019
8.9K
在H10高功率密度大厅推进器推进器
Richard R Hofer1, Jacob B Simmonds1, Dan M Goebel1
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA USA.
概括
捷普尔开发了一种新的霍尔推进器 (H10),用于深空任务,实现3000秒的特定冲动. 这种高功率密度推进器显著提高了机器人和人类探索的推进能力.
科学领域:
- 航空航天工程 航空航天工程
- 等离子体物理学的物理学
- 电动推进 电动推进 电动推进
背景情况:
- 磁性屏蔽增加了霍尔推进器的寿命,用于深空任务.
- 目前的霍尔推进器具有<2000秒的特定脉冲,限制了高速变换任务.
- 对于更广泛的任务应用,需要更高的特异性脉冲 (> 3,000 s).
研究的目的:
- 开发一个低质量的10千瓦级霍尔推进器,具有>3000秒的特定冲动.
- 实现广泛的功率控制比率,实现多功能深空推进.
- 证明高功率密度运行超过了最先进的状态.
主要方法:
- 开发了H10大厅推进器,具有集成的导电墙,磁屏蔽的放电室.
- 实现了被动的,多区域的热排放系统,以实现高功率密度.
- 在各种功率级别和电压下进行性能测试.
主要成果:
- 在800V (~3,000秒的特定冲动) 证明了2:1的功率压缩.
- 取得的效率>50%超过6:1功率压缩.
- 达到457mN推力,3400秒的特定冲动和76%的效率在800V,10kW的峰值性能.
- 在0.2-10千瓦的50:1功率压缩和15千瓦的热稳定状态下进行了演示.
结论:
- 霍尔推进器H10代表了一种新型的高功率密度电推进系统.
- 这项技术使下一代机器人科学和人类探索任务成为可能.
- 推进器的性能特征显著扩大了对深空探索的任务能力.
相关概念视频
The Hall Effect
2.1K
Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting material. From a historical perspective, this experiment was the first to demonstrate that the charge carriers in most metals are negative.
2.1K
Maximum Power Transfer
190
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
By substituting the entire circuit with...
190
Rocket Propulsion in Gravitational Field - II
2.3K
A rocket's velocity in the presence of a gravitational field is decreased by the amount of force exerted by Earth's gravitational field, which opposes the motion of the rocket. If we consider thrust, that is, the force exerted on a rocket by the exhaust gases, then a rocket's thrust is greater in outer space than in the atmosphere or on a launch pad. In fact, gases are easier to expel in a vacuum.
A rocket's acceleration depends on three major factors, consistent with the...
A rocket's acceleration depends on three major factors, consistent with the...
2.3K
Faraday Disk Dynamo
2.0K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
2.0K
Rocket Propulsion in Gravitational Field - I
2.7K
Rockets range in size from small fireworks that ordinary people use to the enormous Saturn V that once propelled massive payloads toward the Moon. The propulsion of all rockets, jet engines, deflating balloons, and even squids and octopuses are explained by the same physical principle: Newton's third law of motion. The matter is forcefully ejected from a system, producing an equal and opposite reaction on what remains.
The motion of a rocket in space changes its velocity (and hence its...
The motion of a rocket in space changes its velocity (and hence its...
2.7K
Torque On A Current Loop In A Magnetic Field
3.7K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
3.7K

