⚡ Electric Propulsion Power & Thrust Calculator

Thrust ↔ power with efficiency · propellant & thrusting days for a Δv · EPS power demand

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Thruster

Mission Segment

Results

Thrust
– mN
Input power
– W
Power / thrust
– W/mN
Mass flow
– mg/s
Propellant for Δv
– kg
Thrust-on time
– days
Calendar time at duty
– days
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📖 How to use

  1. Give either the available power (from EPSTools' budget) or the required thrust; Isp and efficiency come from the thruster family.给定可用功率（来自 EPSTools 预算）或所需推力；Isp 与效率取自推力器型谱。
  2. Power/thrust ≈ 15–25 W/mN for Hall thrusters — the fundamental EP trade: high Isp saves propellant but costs power and time.霍尔推力器约 15–25 W/mN——电推的根本权衡：高 Isp 省推进剂，但费功率、费时间。
  3. The duty cycle converts thrust-on days into calendar days (eclipses, power sharing, station passes).占空比把点火天数换算为日历天数（地影、功率分配、测控弧段）。
  4. Carry the input power into EPSTools' power budget as a sunlight load, and the propellant into Tank Sizing (xenon).把输入功率作为光照负载计入 EPSTools 功率预算，推进剂量带入贮箱工具（氙气）。

EP relations

Thrust from power: F = 2·η·P/(Isp·g₀); equivalently P/F = Isp·g₀/(2η).

Mass flow: ṁ = F/(Isp·g₀); propellant: m_p ≈ m·Δv/(Isp·g₀) for Δv ≪ exhaust velocity.

Thrust-on time: t = m·Δv/F — low-thrust transfers take weeks to months; check the calendar impact at your duty cycle before committing to EP for schedule-critical maneuvers.

All computation runs locally in your browser.

电推关系式

功率求推力: F = 2·η·P/(Isp·g₀)；即 P/F = Isp·g₀/(2η)。

质量流量: ṁ = F/(Isp·g₀)；推进剂: Δv ≪ 喷气速度时 m_p ≈ m·Δv/(Isp·g₀)。

点火时间: t = m·Δv/F —— 小推力转移以周、月计；对进度敏感的机动，先按占空比核日历时间再决定是否用电推。

全部计算在你的浏览器本地完成。