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    • Home (overview)
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  • Cislunar glossary (terms & definitions)

    • Cislunar Space Glossary
    • Fundamentals

      • Allan Deviation (ADEV)
      • Dual One-Way Ranging (DOWR)
      • Einstein Equivalence Principle (EEP)
      • Gravitational Redshift
      • High Altitude Airship (HAA)
      • Near-space
      • Passive Hydrogen Maser (PHM)
      • Stratospheric Airship
      • /en/glossary/fundamentals/absolute-range/
      • /en/glossary/fundamentals/aerodynamic-coefficient/
      • /en/glossary/fundamentals/aerodynamic-moment/
      • /en/glossary/fundamentals/aerospace-vehicle/
      • /en/glossary/fundamentals/ballistic-coefficient/
      • /en/glossary/fundamentals/bi-elliptic-transfer/
      • /en/glossary/fundamentals/body-frame/
      • /en/glossary/fundamentals/celestial-coordinate-system/
      • /en/glossary/fundamentals/celestial-sphere/
      • /en/glossary/fundamentals/characteristic-velocity/
      • /en/glossary/fundamentals/coverage-angle/
      • /en/glossary/fundamentals/earth-ellipsoid/
      • /en/glossary/fundamentals/earth-oblateness-perturbation/
      • /en/glossary/fundamentals/ecef-frame/
      • /en/glossary/fundamentals/energy-parameter/
      • /en/glossary/fundamentals/finite-thrust-maneuver/
      • /en/glossary/fundamentals/free-flight-phase/
      • /en/glossary/fundamentals/free-flight-trajectory/
      • /en/glossary/fundamentals/frozen-orbit/
      • /en/glossary/fundamentals/gaussian-perturbation-equations/
      • /en/glossary/fundamentals/geocentric-inertial-frame/
      • /en/glossary/fundamentals/gps-time/
      • /en/glossary/fundamentals/gravitational-potential/
      • /en/glossary/fundamentals/gravity-turn/
      • /en/glossary/fundamentals/gravity-vs-gravitation/
      • /en/glossary/fundamentals/hit-equation/
      • /en/glossary/fundamentals/hohmann-transfer/
      • /en/glossary/fundamentals/inertial-navigation-system/
      • /en/glossary/fundamentals/instantaneous-balance/
      • /en/glossary/fundamentals/isru/
      • /en/glossary/fundamentals/julian-date/
      • /en/glossary/fundamentals/kepler-equation/
      • /en/glossary/fundamentals/kompsat/
      • /en/glossary/fundamentals/lagrangian-perturbation-equations/
      • /en/glossary/fundamentals/launch-azimuth/
      • /en/glossary/fundamentals/launch-window/
      • /en/glossary/fundamentals/lift-to-drag-ratio/
      • /en/glossary/fundamentals/load-factor/
      • /en/glossary/fundamentals/longitudinal-lateral-motion/
      • /en/glossary/fundamentals/lunar-lander/
      • /en/glossary/fundamentals/minimum-energy-trajectory/
      • /en/glossary/fundamentals/newton-iteration-method/
      • /en/glossary/fundamentals/nutation/
      • /en/glossary/fundamentals/optimal-velocity-inclination/
      • /en/glossary/fundamentals/orbit-capture/
      • /en/glossary/fundamentals/orbit-insertion-conditions/
      • /en/glossary/fundamentals/orbital-elements/
      • /en/glossary/fundamentals/orbital-equation/
      • /en/glossary/fundamentals/orbital-maneuver/
      • /en/glossary/fundamentals/orbital-phase/
      • /en/glossary/fundamentals/orbital-transfer-vehicle/
      • /en/glossary/fundamentals/perturbation-motion/
      • /en/glossary/fundamentals/phasing-orbit/
      • /en/glossary/fundamentals/pitch-program/
      • /en/glossary/fundamentals/powered-phase/
      • /en/glossary/fundamentals/precession/
      • /en/glossary/fundamentals/pressure-center/
      • /en/glossary/fundamentals/range-error-coefficient/
      • /en/glossary/fundamentals/reentry-corridor/
      • /en/glossary/fundamentals/reentry-phase/
      • /en/glossary/fundamentals/repeat-ground-track-orbit/
      • /en/glossary/fundamentals/reusable-launch-vehicle/
      • /en/glossary/fundamentals/satellite-ring/
      • /en/glossary/fundamentals/sequential-quadratic-programming/
      • /en/glossary/fundamentals/skip-reentry/
      • /en/glossary/fundamentals/solar-exposure-factor/
      • /en/glossary/fundamentals/specific-angular-momentum/
      • /en/glossary/fundamentals/specific-impulse/
      • /en/glossary/fundamentals/stagnation-heat-flux/
      • /en/glossary/fundamentals/standard-atmosphere/
      • /en/glossary/fundamentals/subsatellite-track/
      • /en/glossary/fundamentals/sun-synchronous-orbit/
      • /en/glossary/fundamentals/thrust-to-weight-ratio/
      • /en/glossary/fundamentals/thrust/
      • /en/glossary/fundamentals/total-angle-of-attack/
      • /en/glossary/fundamentals/trajectory-equation/
      • /en/glossary/fundamentals/trajectory-optimization/
      • /en/glossary/fundamentals/trim-angle-of-attack/
      • /en/glossary/fundamentals/true-anomaly/
      • /en/glossary/fundamentals/tsiolkovsky-equation/
      • /en/glossary/fundamentals/turning-program/
      • /en/glossary/fundamentals/two-body-problem/
      • /en/glossary/fundamentals/utc/
      • /en/glossary/fundamentals/variation-of-parameters/
      • /en/glossary/fundamentals/velocity-frame/
      • /en/glossary/fundamentals/velocity-inclination-angle/
      • /en/glossary/fundamentals/vis-viva-equation/
      • /en/glossary/fundamentals/vleo/
      • /en/glossary/fundamentals/walker-constellation/
      • /en/glossary/fundamentals/zero-angle-of-attack-reentry/
    • Dynamics & Math

      • A* Search Algorithm (A* Search)
      • A2PPO (Attention-Augmented Proximal Policy Optimization)
      • Action-Angle Variables
      • Backstepping Sliding Mode Control
      • Backward Stability Set
      • Bang-bang Control (Bang-bang Control)
      • Barycentric Synodic Coordinate System
      • Batch Deployment (Batch Deployment)
      • Bicircular Four-Body Problem
      • Birkhoff-Gustavson Normal Form
      • Buoyancy-weight Imbalance
      • Capture Set
      • Central Manifold
      • Chaos Effect
      • Clohessy-Wiltshire (CW) Equation
      • Co-state Normalization (Co-state Normalization)
      • Coasting Arc (Coasting Arc)
      • Continuation Method (Parameter Continuation)
      • Continuation (延拓)
      • Cooperative Agent (CA)
      • CR3BP with Low-Thrust (CR3BP-LT)
      • Circular Restricted Three-Body Problem (CR3BP)
      • Curriculum Learning
      • Deep Reinforcement Learning
      • Differential Correction (微分修正)
      • Differential Evolution (DE) Algorithm
      • Differential Games (Differential Games)
      • Direct Collocation
      • Dynamic Programming (Dynamic Programming)
      • Dynamic Target Method
      • Ephemeris Model
      • Equinoctial Orbital Elements (Equinoctial Orbital Elements)
      • Fuzzy Backstepping Control
      • Generalized Advantage Estimation (GAE)
      • Gaussian Process Regression
      • Geocentric Rotating Coordinate System (GRC)
      • Heteroclinic Orbit Transfer (Heteroclinic Orbit Transfer)
      • Hill Three-Body Problem
      • Homotopy Method (Homotopy Method)
      • Improved Baseline Control-Point Method (Improved Baseline Control-Point Method)
      • Impulsive Maneuver (脉冲机动)
      • Initial Value Optimization
      • Invariant Manifold (Invariant Manifold)
      • J2000 Geocentric Equatorial Coordinate System (J2000 Geocentric Equatorial Coordinate System)
      • Jacobi Constant (Jacobi Integral)
      • K-Means Clustering (K-Means Clustering)
      • K-Medoids Clustering (K-Medoids Clustering)
      • KD-Tree (KD-Tree)
      • Libration Point (Equilibrium Point)
      • Libration Point Spacecraft Body Coordinate System (Libration Point Spacecraft Body Coordinate System)
      • Libration Point Spacecraft Orbital Coordinate System (Libration Point Spacecraft Orbital Coordinate System)
      • Lindstedt-Poincare Method (Lindstedt-Poincare Method)
      • L2-centered Rotating Coordinate System (L2-centered Rotating Coordinate System, LRC)
      • Low-Thrust Transfer MDP Formulation
      • Mass Discontinuity (Mass Discontinuity)
      • Monodromy Matrix
      • Newton-Euler Equations
      • Particle Swarm Optimization
      • Patch Point (Splicing Point)
      • Patched Method (拼接法)
      • Poincaré Map (庞加莱图)
      • Poincaré Section
      • Quasi-Bicircular Problem (QBCP)
      • Quasi-Bicircular Four-Body Problem
      • Regional Station-keeping Control
      • Seven-node Model
      • Shooting Method
      • Six-DOF Motion Equations
      • Sliding Mode Control
      • Solar Radiation Pressure (SRP)
      • Stability Index
      • Stability Set
      • State Transition Matrix (STM)
      • Static Lift
      • Strobe Map
      • Targeting Method
      • Thermo-mechanical Coupling Model
      • Thermodynamic Model
      • Two-Level Differential Correction Method
      • Two-node Model
      • Variational Mode Decomposition
      • Zero-Velocity Surface
      • /en/glossary/dynamics/ddpg/
      • /en/glossary/dynamics/hcpso/
      • /en/glossary/dynamics/mo-mcts/
      • /en/glossary/dynamics/nsga-ii/
      • /en/glossary/dynamics/pareto-optimal/
      • /en/glossary/dynamics/pontryagin-principle/
      • /en/glossary/dynamics/pseudo-arclength-continuation/
      • /en/glossary/dynamics/pursuit-evasion-game/
      • /en/glossary/dynamics/q-law/
      • /en/glossary/dynamics/reachable-set/
      • /en/glossary/dynamics/reduced-order-dynamics/
      • /en/glossary/dynamics/regularization/
      • /en/glossary/dynamics/rlepeso/
      • /en/glossary/dynamics/saddle-point-strategy/
      • /en/glossary/dynamics/state-dependent-tsp/
      • /en/glossary/dynamics/two-dominant-invariant-manifold/
      • /en/glossary/dynamics/zero-effort-miss/
    • Mission orbits

      • Apolune (远月点)
      • Ballistic Capture Orbit
      • Cycler Trajectory
      • DRO Constellation
      • Distant Retrograde Orbit (DRO)
      • Earth-Moon L1/L2 Halo Orbit (EML1/EML2 Halo)
      • Free-Return Trajectory (自由返回轨道)
      • Full Lunar Surface Coverage Orbit
      • Halo Orbit (Halo 轨道)
      • Lissajous Orbit (Lissajous 轨道)
      • Low-Energy Transfer Orbit
      • Lyapunov Orbit (Lyapunov 轨道)
      • Multi-Revolution Halo Orbit
      • Near-Rectilinear Halo Orbit (NRHO)
      • Orbit Identification
      • Orbit Keeping (Station-Keeping)
      • Parking Orbit (停泊轨道)
      • Perilune (近月点)
      • Prograde (顺行)
      • Quasi-Periodic Orbit
      • Resonance Orbit
      • Retrograde (逆行)
      • Transfer Orbit (转移轨道)
      • /en/glossary/orbits/axial-orbit/
      • /en/glossary/orbits/butterfly-orbit/
      • /en/glossary/orbits/dpo/
      • /en/glossary/orbits/horseshoe-orbit/
      • /en/glossary/orbits/hub-and-spoke/
      • /en/glossary/orbits/lopo/
      • /en/glossary/orbits/polynomial-constraint-stationkeeping/
      • /en/glossary/orbits/primary-impulse-transfer/
      • /en/glossary/orbits/vertical-orbit/
    • Navigation

      • Altitude Regulation
      • Cislunar Spatiotemporal Reference
      • Earth-Moon Hybrid Navigation
      • Earth GNSS Weak Signal Navigation
      • Inter-Satellite Link Navigation
      • LiAISON Navigation
      • LunaNet (Lunar Network)
      • Lunar Navigation Constellation
      • Moonlight Initiative
      • Tiandu-1
      • Trajectory Planning
      • X-ray Pulsar Navigation
      • /en/glossary/navigation/autonomous-navigation/
      • /en/glossary/navigation/extended-kalman-filter/
      • /en/glossary/navigation/gagan/
      • /en/glossary/navigation/irnss/
      • /en/glossary/navigation/observability/
      • /en/glossary/navigation/orbit-identification/
      • /en/glossary/navigation/pnt/
      • /en/glossary/navigation/sem-autonomous-navigation/
    • Lunar minerals

      • Changeite-Ce (Cerium Changeite)
      • Changeite-Mg (Magnesium Changeite)
    • Programs & missions

      • Artemis Program
      • LuGRE Experiment
    • Other

      • Actuator Error
      • Chain-of-Thought (CoT) Prompting
      • Cislunar Navigation Prospects
      • Cislunar Space (地月空间)
      • EXOSIMS
      • Floquet Mode Method
      • Impulse Thrust
      • Insertion Error
      • Low Earth Orbit / LEO (低地球轨道)
      • Low-Rank Adaptation (LoRA)
      • Lunar Gravity Assist / LGA (月球借力)
      • Navigation Error
      • Noncooperative Target
      • Nuclear Thermal Propulsion (NTP)
      • Orbit Insertion (入轨)
      • Period-Doubling Bifurcation
      • Longitudinal Coupling Vibration (POGO)
      • Powered Lunar Flyby / PLF (有动力月球借力)
      • Prompt Tuning (P-tuning)
      • Reflection Coefficient (C_R)
      • Solar Constant (S₀)
      • Space Traffic Management (STM)
      • Spacecraft Intention Recognition
      • Starshade
      • Weak Stability Boundary / WSB (弱稳定边界)
      • /en/glossary/other/gslv/
      • /en/glossary/other/insat/
      • /en/glossary/other/orbital-residence-platform/
      • /en/glossary/other/pslv/
      • /en/glossary/other/pursuit-evasion-defense/
    • Organizations

      • Anduril Industries
      • Booz Allen Hamilton
      • General Dynamics Mission Systems
      • GITAI USA
      • Lockheed Martin
      • Northrop Grumman
      • Quindar
      • Raytheon Missiles & Defense
      • Sci-Tec
      • SpaceX
      • True Anomaly
      • Turion Space
      • /en/glossary/organizations/danuri/
      • /en/glossary/organizations/isro/
      • /en/glossary/organizations/kasa/
      • /en/glossary/organizations/sriharikota/
      • /en/glossary/organizations/true-anomaly-company/
    • Military space doctrine

      • Cislunar Space Situational Awareness
      • Competitive Endurance
      • Component Field Commands
      • Commander, Space Forces (COMSPACEFOR)
      • Counterspace Operations
      • DOTMLPF-P Framework
      • Force Design
      • Force Development
      • Force Employment
      • Force Generation
      • Golden Dome
      • Mission Command
      • Mission Delta (MD)
      • Operational Test and Training Infrastructure (OTTI)
      • Resilient/Disaggregated Architecture
      • Space Domain Awareness (SDA)
      • Space Mission Task Force (SMTF)
      • Space Superiority
      • Space Force Generation Process (SPAFORGEN)
      • System Delta (SYD)
      • /en/glossary/doctrine/asat/
      • /en/glossary/doctrine/civil-military-integration/
      • /en/glossary/doctrine/directed-energy-weapon/
      • /en/glossary/doctrine/distributed-architecture/
      • /en/glossary/doctrine/kinetic-weapon/
      • /en/glossary/doctrine/persistent-detection-corridor/
      • /en/glossary/doctrine/resilience-map/
    • Observation techniques

      • Astrometry
      • Background Star Elimination
      • Cislunar Moving Objects
      • Continuous Coverage (CP)
      • Earth Albedo
      • Ephemeris Correlation
      • Hot Pixel
      • Image Registration
      • Image Stacking
      • Lunar Glare Zone
      • Quasi-zero Wind Layer
      • Segmentation Map
      • Shift-and-Add (SAA)
      • Sidereal Tracking
      • Signal-to-Noise Ratio (SNR)
      • Solar Radiation
      • Source Extraction
      • Synthetic Tracking
      • Zonal Wind
      • /en/glossary/observation/illumination-constraint/
      • /en/glossary/observation/pointing-constraint/
    • Satellite Communication & TT&C

      • All-Time Seamless Communication
      • BeiDou Satellite System
      • Constellation Networking
      • Inter-Satellite Link (ISL)
      • Laser-Microwave Communication
      • Microwave Link

Force Design

Author: 天疆说

Site: https://cislunarspace.cn

Definition

Force Design is the U.S. Space Force service-level activity by which the Space Force determines the force it needs. By forecasting the operational environment five to fifteen years into the future, the Force Design process leverages concept development, wargaming, experimentation, exercises, and mission analysis to inform new requirements, architectures, and operational concepts. The output of Force Design is the Objective Force — the ideal future state of the Space Force's capabilities.

Force Design is a forward-looking planning activity whose core principle is that today's space force building must be based on accurate anticipation of future threats and opportunities, rather than merely satisfying current requirements.

Key Elements

Operational Environment Forecasting

The starting point of Force Design is forecasting the future operational environment over a five-to-fifteen-year horizon. This includes:

  • Threat Assessment: Predicting the counterspace capabilities adversaries may develop over the next five to fifteen years.
  • Technology Trends: Evaluating the impact of emerging technologies (such as artificial intelligence, quantum communications, and on-orbit servicing) on space operations.
  • Geopolitical Environment: Analyzing trends in the international space competition landscape.

Concept Development

Concept development is the core element of Force Design, aimed at exploring new ways and methods for future space operations:

  • Operational Concepts (CONOPS): Describing visions and methods for future space operations.
  • Capability Concepts: Defining future capabilities and technologies needed.
  • Organizational Concepts: Exploring organizational structures that support new operational concepts.

Wargaming and Experimentation

The Force Design process relies heavily on wargaming and experimentation to validate and refine concepts:

  • Wargaming: Testing the feasibility and effectiveness of operational concepts in simulated environments.
  • Experimentation: Validating the performance of new technologies and concepts through actual testing.
  • Exercises: Assessing the operability of new concepts in near-real-world environments.

Mission Analysis

Mission analysis is the foundational methodology of Force Design, systematically analyzing Space Force missions to determine:

  • Gaps between current capabilities and future requirements
  • Resources and investment priorities needed to close gaps
  • Cost-benefit analysis of different alternatives

Key Supporting Organizations

The Force Design process relies on three key supporting organizations:

  • Concepts and Technology Delta: Responsible for concept development and technology exploration.
  • Wargaming Delta: Responsible for organizing and conducting wargames.
  • Space Warfare Analysis Center: Responsible for conducting in-depth mission analysis and operational assessments.

Context in Space Force Vector 2025

Space Force Vector 2025 establishes Force Design as one of the four service-level activities of the Space Force, alongside Force Development, Force Generation, and Force Employment. The document states:

"Force Design is the service-level activity by which the Space Force determines the force we need. By forecasting the operational environment five to fifteen years into the future, the Force Design process leverages concept development, wargaming, experimentation, exercises, and mission analysis to inform new requirements, architectures, and operational concepts."

Force Design plays the role of a "compass" in the Space Force's strategic framework:

  • It provides the capability foundation for Competitive Endurance theory — determining what kind of force is needed to achieve space superiority.
  • It provides direction for the DOTMLPF-P framework — guiding the building direction across doctrine, organization, training, and other dimensions.
  • It provides targets for Force Development, Force Generation, and Force Employment — defining the Objective Force as the reference standard for these activities.

The output of Force Design — the Objective Force — is the core basis for Space Force planning and investment. It represents the ideal state the Space Force should achieve in the medium to long term, guiding comprehensive building efforts from technology research and development to personnel cultivation.

Related Concepts

  • Space Superiority — The ultimate objective pursued by Force Design
  • Competitive Endurance — The strategic theory guiding Force Design
  • Force Development — The process of transforming the Objective Force into reality
  • Force Generation — Building deployable forces based on Force Design outputs
  • DOTMLPF-P Framework — The dimensions Force Design must comprehensively consider

References

  • United States Space Force. Space Force Vector 2025. 2025.
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Last Updated: 4/29/26, 8:26 AM
Contributors: Hermes Agent
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