Captive Trajectory System (CTS) & Store Load Testing
Calspan is able to Rapidly Test a Large Number of Stores for your Aircraft
Calspan’s Captive Trajectory System (CTS) testing services support the development and refinement of weapons, stores, and space access vehicles. Conducted in our transonic wind tunnel, CTS testing replicates real-world release dynamics through precisely controlled motion of scale models using advanced servo-driven mechanisms. Our recent investments in a CTS control rack, new integration lab, and calibration processes support more accurate, repeatable results across a variety of release scenarios—from gravity drop to rail launch. Whether testing aircraft-borne ejectors or launch vehicle separation events, our CTS program delivers valuable aerodynamic and proximity data in real-time.
We are equipped to:
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Simultaneously assess stored loads and their effect on aircraft control authority.
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You can supply your own balances, utilize Calspan’s inventory, or work with Calspan FMS to fabricate balances tailored to your needs.
Simulated Release Types
We support ejector, rail launch, pitch pivot, and gravity-based store releases, enabling broad testing flexibility for aircraft and launch systems.
Integrated Test Infrastructure
Recent investments in CTS hardware, software, and lab space ensure accurate, reliable testing and faster setup for successive test campaigns.
Defense and Space Applications
We support both military and commercial programs including weapons carriage, stage separation, and spacecraft proximity testing.
Transonic Wind Tunnel Testing Using Calspan’s Captive Trajectory System
Calspan’s transonic wind tunnel enables high-fidelity simulation of store separation events using our advanced Captive Trajectory System (CTS). The CTS replicates constrained motion and free trajectory behavior using a multi-axis servo-driven platform capable of reproducing pitch, roll, yaw, and translational movement within a tightly controlled test envelope.
Calspan has made targeted investments to enhance test quality and throughput, including:
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A new CTS software and control rack
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A dedicated CTS integration lab
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Tunnel calibration and flow survey enhancements
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Process improvements for test consistency and repeatability
Captive Store Loads Testing
Calspan also offers Captive-Store Loads testing to support military aircraft and weapons development. This technique allows for simultaneous evaluation of multiple stores in the captive/carry position using strain gage balances mounted between the store, pylon, and carrier. This setup enables precise measurement of forces and moments on each store. The resulting data allows customers to assess store and pylon loads across multiple configurations, and determine their effects on control surfaces such as trailing edge flaps. This insight supports evaluations of aircraft performance, stability, and control—and ultimately contributes to improved flight safety and system certification.
Calspan’s CTS and captive-load test services have supported the accelerated development of both advanced munitions and space access systems. Our experienced in-house team manages all aspects of testing—from integration and instrumentation to data analysis.
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