Propulsion Lab — ZICORE Command System

Engine Database

53 engines

Engine ↕	Category ↕	Isp (vac) ↕	Thrust ↕	Mass ↕	Fuel	Type	Status ↕

Propulsion Calculator

7 tools

Isp Calculator

Isp = F / (ṁ × g₀)

Thrust (N)

Mass Flow Rate (kg/s)

Specific Impulse

—s

Delta-V Calculator

Δv = Isp × g₀ × ln(mᵢ / m_f)

Isp (s)

Initial Mass (kg)

Final Mass (kg)

Delta-V

—m/s

Thrust-to-Weight Ratio

TWR = F / (m × g₀)

Thrust (N)

Mass (kg)

Gravity (m/s²)

TWR

—

Mass Flow Rate

ṁ = F / (Isp × g₀)

Thrust (N)

Isp (s)

Mass Flow Rate

—kg/s

Burn Time

t = (mᵢ × g₀ × Isp / F) × (1 − e^(−Δv/(g₀×Isp)))

Delta-V (m/s)

Thrust (N)

Initial Mass (kg)

Isp (s)

Burn Time

—s

Payload Fraction

PF = m_payload / m_total × 100%

Payload Mass (kg)

Total Mass (kg)

Payload Fraction

—%

Multi-Stage Delta-V

Δv_total = Σ (Isp_i × g₀ × ln(m_i / m_f))

Total Delta-V

—m/s

Engine Comparison

side-by-side

Specifications Comparison

Isp Comparison

Thrust Comparison

Mass Comparison

Thrust-to-Weight

Multi-Attribute Radar

Mission Recommendation

3D Engine Viewer

Three.js

Merlin 1D — LOX/RP1

Engine Cross-Section