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    • Home (overview)
    • What is cislunar space
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  • Cislunar glossary (terms & definitions)

    • Cislunar Space Glossary
    • Fundamentals

      • Absolute Range
      • Aerodynamic Coefficient
      • Aerodynamic Moment
      • Aerospace Vehicle
      • Allan Deviation (ADEV)
      • Ballistic Coefficient
      • Bi-Elliptic Transfer
      • Body Frame
      • Celestial Coordinate System
      • Celestial Sphere
      • Characteristic Velocity
      • Coverage Angle
      • Dual One-Way Ranging (DOWR)
      • Earth Ellipsoid
      • Earth Oblateness Perturbation
      • Earth-Centered Earth-Fixed Frame (ECEF)
      • Einstein Equivalence Principle (EEP)
      • Energy Parameter
      • Earth Observation (EO)
      • Finite Thrust Maneuver
      • Free-Flight Phase
      • Free-Flight Trajectory
      • Frozen Orbit
      • Gaussian Perturbation Equations
      • Geocentric Inertial Frame
      • GPS Time
      • Gravitational Potential
      • Gravitational Redshift
      • Gravity Turn
      • Gravity vs Gravitation
      • High Altitude Airship (HAA)
      • Hit Equation
      • Hohmann Transfer
      • Inertial Navigation System
      • Instantaneous Balance Assumption
      • In-Situ Resource Utilization (ISRU)
      • Julian Date
      • Kepler's Equation
      • Korea Multi-Purpose Satellite (KOMPSAT)
      • Lagrangian Perturbation Equations
      • Launch Azimuth
      • Launch Window
      • Lift-to-Drag Ratio
      • Load Factor
      • Longitudinal and Lateral Motion
      • Lunar Lander
      • Minimum Energy Trajectory
      • Near-space
      • Newton's Iteration Method
      • Nuri (KSLV-II)
      • Nutation
      • Optimal Velocity Inclination
      • Orbit Capture
      • Orbit Insertion Conditions
      • Orbital Elements
      • Orbital Equation
      • Orbital Maneuver
      • Orbital Phase
      • Orbital Transfer Vehicle
      • Passive Hydrogen Maser (PHM)
      • Perturbation Motion
      • Phasing Orbit
      • Pitch Program Angle
      • Powered Phase
      • Precession
      • Center of Pressure
      • Range Error Coefficient
      • Reentry Corridor
      • Reentry Phase
      • Repeat Ground Track Orbit
      • Reusable Launch Vehicle
      • Synthetic Aperture Radar (SAR)
      • Satellite Ring
      • Sequential Quadratic Programming
      • Skip Reentry
      • Solar Exposure Factor
      • Specific Angular Momentum
      • Specific Impulse
      • Stagnation Heat Flux
      • Standard Atmosphere
      • Stratospheric Airship
      • Subsatellite Track
      • Sun-Synchronous Orbit
      • Thrust-to-Weight Ratio
      • Thrust
      • Total Angle of Attack
      • Trajectory Equation
      • Trajectory Optimization
      • Trim Angle of Attack
      • True Anomaly
      • Tsiolkovsky Rocket Equation
      • Powered Phase Turning Process
      • Two-Body Problem
      • Coordinated Universal Time
      • Variation of Parameters
      • Velocity Frame
      • Velocity Inclination Angle
      • Vis-Viva Equation
      • Very Low Earth Orbit (VLEO)
      • Walker Constellation
      • 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)
      • Co-state Variables
      • Coasting Arc (Coasting Arc)
      • Continuation Method (Parameter Continuation)
      • Continuation
      • Cooperative Agent (CA)
      • CR3BP with Low-Thrust (CR3BP-LT)
      • Circular Restricted Three-Body Problem (CR3BP)
      • Curriculum Learning
      • Deep Deterministic Policy Gradient (DDPG)
      • Deep Reinforcement Learning
      • Detection Graph
      • Differential Correction
      • 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)
      • Earth Restricted Three-Body Problem (ERTBP)
      • Fuel-optimal Control
      • Fuzzy Backstepping Control
      • Generalized Advantage Estimation (GAE)
      • Gaussian Process Regression
      • Geocentric Rotating Coordinate System (GRC)
      • Hamiltonian
      • Hybrid Cluster Particle Swarm Optimization (HCPSO)
      • 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
      • 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)
      • LSTM Neural Network
      • Low-Thrust Transfer MDP Formulation
      • Mass Discontinuity (Mass Discontinuity)
      • Multi-Objective Monte Carlo Tree Search (MO-MCTS)
      • Modal Analysis
      • Monodromy Matrix
      • Monte Carlo Tree Search
      • Newton-Euler Equations
      • NSGA II (Non-dominated Sorting Genetic Algorithm II)
      • Pareto Optimality
      • Particle Swarm Optimization
      • Patch Point (Splicing Point)
      • Patched Method
      • Poincaré Map
      • Poincaré Section
      • Pontryagin's Maximum Principle
      • Pseudo-Arclength Continuation
      • Spacecraft Pursuit-Evasion Game
      • Q-Law Control Law
      • Quasi-Bicircular Problem (QBCP)
      • Quasi-Bicircular Four-Body Problem
      • Reachable Set
      • Reduced-Order Dynamic Equations
      • Regional Station-keeping Control
      • Regularization
      • Reinforcement Learning Enhanced Particle Swarm Optimization (RLEPSO)
      • Saddle-Point Strategy
      • Seven-node Model
      • Shooting Method
      • Six-DOF Motion Equations
      • Sliding Mode Control
      • Solar Radiation Pressure (SRP)
      • Stability Index
      • Stability Set
      • State-Dependent Traveling Salesman Problem (SDTSP)
      • State Transition Matrix (STM)
      • Static Lift
      • Strobe Map
      • Switching Function
      • Targeting Method
      • Thermo-mechanical Coupling Model
      • Thermodynamic Model
      • Two-Point Boundary Value Problem (TPBVP)
      • Trim Condition
      • Two-Dominant Invariant Manifold Method
      • Two-Level Differential Correction Method
      • Two-node Model
      • Variational Mode Decomposition
      • Zero-Effort Miss (ZEM)
      • Zero-Velocity Surface
    • Mission orbits

      • Apolune
      • Axial Orbit
      • Ballistic Capture Orbit
      • Butterfly Orbit
      • Cycler Trajectory
      • Distant Prograde Orbit (DPO)
      • DRO Constellation
      • Distant Retrograde Orbit (DRO)
      • Earth-Moon L1/L2 Halo Orbit (EML1/EML2 Halo)
      • Free-Return Trajectory
      • Full Lunar Surface Coverage Orbit
      • Halo Orbit
      • Heteroclinic Connection
      • Horseshoe Orbit
      • Hub-and-Spoke
      • Lissajous Orbit
      • Long Period Orbit
      • Low Prograde Orbit (LoPO)
      • Low-Energy Transfer Orbit
      • Low-Thrust Transfer Orbit
      • Lyapunov Orbit
      • Multi-Revolution Halo Orbit
      • Near-Rectilinear Halo Orbit (NRHO)
      • Orbit Identification
      • Orbit Keeping (Station-Keeping)
      • Parking Orbit
      • Perilune
      • Polynomial Constraint Station-Keeping
      • Primary Impulse Orbit Transfer
      • Prograde
      • Quasi-Periodic Orbit
      • Resonance Orbit
      • Retrograde
      • Short Period Orbit
      • Transfer Orbit
      • Triangular Libration Points
      • Vertical Orbit
    • Navigation & systems

      • Altitude Regulation
      • Autonomous Navigation
      • Cislunar Spatiotemporal Reference
      • Earth-Moon Hybrid Navigation
      • Extended Kalman Filter (EKF)
      • GPS Aided GEO Augmented Navigation (GAGAN)
      • Earth GNSS Weak Signal Navigation
      • Inter-Satellite Link Navigation
      • Indian Regional Navigation Satellite System (IRNSS)
      • LEO Navigation Augmentation
      • LiAISON Navigation
      • LunaNet (Lunar Network)
      • Lunar Navigation Constellation
      • Moonlight Initiative
      • Observability
      • Positioning, Navigation, and Timing (PNT)
      • Sun-Earth-Moon Autonomous Navigation
      • Tiandu-1
      • Trajectory Planning
      • X-ray Pulsar Navigation
    • Astronomy & observation

      • Astrometry
      • Background Star Elimination
      • Cislunar Moving Objects
      • Continuous Coverage (CP)
      • Earth Albedo
      • Ephemeris Correlation
      • Hot Pixel
      • Illumination Constraint
      • Image Registration
      • Image Stacking
      • Infrared Radiation
      • Lunar Glare Zone
      • Pointing Constraint
      • 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
    • Military space doctrine

      • Anti-Satellite Test (ASAT)
      • Cislunar Space Situational Awareness
      • Civil-Military Integration
      • Competitive Endurance
      • Component Field Commands
      • Commander, Space Forces (COMSPACEFOR)
      • Counterspace Operations
      • Directed Energy Weapon (DEW)
      • Distributed Architecture
      • DOTMLPF-P Framework
      • Force Design
      • Force Development
      • Force Employment
      • Force Generation
      • Golden Dome
      • Kinetic Weapon
      • Mission Command
      • Mission Delta (MD)
      • Operational Test and Training Infrastructure (OTTI)
      • Persistent Detection Corridor (PDC)
      • Resilience Map
      • Resilient/Disaggregated Architecture
      • Space Domain Awareness (SDA)
      • Space Mission Task Force (SMTF)
      • Space Superiority
      • Space Force Generation Process (SPAFORGEN)
      • System Delta (SYD)
    • Organizations

      • Anduril Industries
      • Booz Allen Hamilton
      • Danuri Lunar Orbiter
      • General Dynamics Mission Systems
      • GITAI USA
      • Indian Space Research Organisation
      • Korea Aerospace Administration
      • Lockheed Martin
      • Northrop Grumman
      • Quindar
      • Raytheon Missiles & Defense
      • Sci-Tec
      • SpaceX
      • Satish Dhawan Space Centre SHAR
      • True Anomaly
      • Turion Space

Force Design

Author: Tianjiang Shuo

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: 6/5/26, 11:01 AM
Contributors: Hermes Agent, Ou Yang Jiahong
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