Single-Stage Vehicles
Vehicles that reach the intended trajectory or orbit without discarding stages.
Reference
Rocket Bodies & Vehicle Library
Conceptual overview of launch-vehicle architectures and major structural elements. Content is educational and does not replace detailed structural analysis or engineering drawings.
Multistage Vehicles
Vehicles that discard empty stages to improve mass ratio and reach higher velocities.
Expendable Architectures
Vehicles designed to be used once; stages are not recovered for reuse.
Partially and Fully Reusable Architectures
Vehicles that recover one or more stages for inspection, refurbishment, and reflight.
Solid, Liquid, and Hybrid Vehicle Configurations
Vehicle-level propellant architecture choices and their system impacts.
Small, Medium, and Heavy Launch Vehicles
Classifications by payload capacity to a reference orbit.
Nose Cones and Payload Fairings
Aerodynamic and protective structures that enclose the payload during ascent.
Propellant Tanks
Primary structures that store liquid or solid propellants and often form the vehicle’s main body.
Interstages and Stage Adapters
Structures connecting stages and supporting separation and load transfer.
Primary Structure and Avionics Bays
Load-bearing airframe and protected volumes for guidance, navigation, and control equipment.
Thermal Protection and Recovery Systems
Systems that manage re-entry heating and enable stage or fairing recovery.
Aerodynamic Control Surfaces
Fins, grid fins, and similar devices used for attitude control in atmosphere.
Structural Materials Considerations
Trade-offs among alloys, composites, and manufacturing approaches for vehicle structures.
Spacecraft and Upper-Stage Contexts
Upper stages and in-space stages that deliver payloads to final orbits or escape trajectories.
Glossary
Structural and architecture terms
- Mass fraction
- Ratio of propellant mass to total stage or vehicle mass. Higher mass fractions improve performance for a given Isp.
- Structural ratio
- Ratio of structural (dry) mass to total stage mass. Lower structural ratios are generally desirable but constrained by strength and stiffness.
- Staging
- Event in which an empty stage is separated so the remaining vehicle can continue with improved mass ratio.
- Fairing
- Protective aerodynamic shell around the payload, jettisoned after atmospheric flight.
- Interstage
- Structure connecting two stages, carrying loads and supporting separation.
- Thrust structure
- Structure that transfers engine thrust into the vehicle primary structure and tanks.
Selected references
- NASA — launch vehicle and structures educational resources.
- ESA — European launcher programme public information.
- NASA Technical Reports Server (NTRS) — materials and structures chapters for launch vehicles.
Illustrations and descriptions on this page are conceptual. They are not engineering drawings and must not be used as the basis for flight hardware design without proper analysis and certification processes.