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14 November 2026
To address the conflict between fast response and strict safety constraints in aeroengine transient control, this paper proposes a hierarchical safe reinforcement learning method based on a control barrier function (CBF) safety filter. Under the same...
14 November 2026
Parafoil airdrop systems are sensitive to atmospheric wind disturbances, and wind prediction accuracy is critical for trajectory planning. However, the relationship between prediction accuracy and landing precision is poorly quantified. This study pr...
14 November 2026
To investigate the influence of nonlinear transmission characteristics of a semi-levered nose landing gear mechanism on landing impact responses, a nonlinear dynamic model calibrated using quasi-static load–stroke tests is established. The coup...
13 November 2026
This study numerically investigates transient flow regulation in a simplified rotary rear variable area bypass injector (RVABI) across a range of actuation periods and bypass-to-core inlet total-pressure ratios. Opening and closing strokes follow dis...
Rapid formation control of multi-parafoil swarms under gust disturbances and steering-line stroke limits is challenging because three-dimensional virtual commands must be realized through only two control channels and post-allocation saturation cause...
An efficient morph wing evaluation is proposed to integrate morphing concepts and static aeroelastic effects, enabling fuel reduction, enhancing sustainability and reducing operational costs in air transportation while assessing specific advantages c...
This study investigates planar Voronoi-based satellite-swarm reconfiguration near the Earth–Moon
A shape memory alloy (SMA)-actuated morphing stratospheric airship configuration is proposed, in which SMA members serve simultaneously as actuation elements and primary load-carrying structures. A partitioned sequential coupling strategy is adopted,...
Computationally efficient and sufficiently accurate mass estimation methods are required for the design exploration of aircraft with nonconventional configurations at the conceptual design stage. This paper investigates a box-wing regional aircraft d...
The authors have made the following corrections to the author list and the content of the original publication [...]
Auxiliary power units (APUs) of aircraft undergo continuous performance degradation during service due to the coupled effects of operating environment and load. Accurate prediction of their remaining useful life (RUL) is of great significance for avo...
Relative pose measurement and 3D structural perception of space non-cooperative targets provide core technical support for on-orbit servicing, space debris removal, and defunct satellite capture. A single sensor can hardly achieve high-precision rang...
Continuous stationkeeping near Sun–Earth collinear libration points requires thrusts of several mm/s2, which exhausts propellant-based propulsion and bounds mission lifetime. Building on the superconducting-loop solar sail configuration origina...
This paper addresses the tracking problem of hypersonic variable-sweep vehicles (HVSVs) subject to model uncertainties and feedback gain perturbations. Neglecting feedback gain perturbations in controller design can degrade tracking performance and c...
Multi-UAV cooperative transportation in confined environments requires coordinated turning, collision avoidance, and mitigation of gust-induced payload motion. This paper develops a task-specific control framework that coordinates formation-geometry...
Variations in flight conditions and wing configuration alter the aerodynamic characteristics and inertial properties of high-speed variable-sweep vehicles. A longitudinal gain-scheduled controller combining common Lyapunov vertex synthesis and invers...
This work investigates the propulsion performance of a metal-ion thruster based on thermionic vacuum arc (TVA) discharge operated in direct current (dc) and pulsed regimes using zinc (Zn) as solid propellant. The study focuses on the indirect estimat...
The safe and scalable integration of drones into complex urban low-altitude airspace relies heavily on precise and real-time environmental modeling. However, the extreme volatility of low-altitude environments, often disrupted by dynamic obstacles an...
Satellite telemetry exhibits complex temporal dynamics and strong cross-parameter dependencies, complicating both reconstruction and anomaly detection. Conventional methods may inadequately capture channel-specific temporal behavior and cross-paramet...
Low-level windshear is among the most hazardous weather on approach, and the reactive alerting chain fixed by certification standards such as TSO-C117 is the last line of defense. This paper asks whether the fixed five-second decision window of the c...
With the continuous advancement of cislunar space exploration, reliable navigation infrastructure for diverse users is essential for future deep-space missions. This study investigates the design and service performance of navigation satellite conste...
The renewed interest in long-duration human exploration missions to the Moon and Mars has highlighted the need for spacesuits capable of ensuring both physiological protection and operational performance. Operational extravehicular activity (EVA) spa...
This paper addresses an integral event-triggered secure formation control approach for unmanned aerial vehicles (UAVs) subject to false data injection (FDI) attacks. The formation-learning closed loop is shown to be semiglobally practically uniformly...
Reliable thermal-to-visible localization requires verifying whether geometrically consistent matches identify the correct map region. We present Provenance-Isolated Verification of Observation Transport (PIVOT), a predictive verifier that selects amo...
Tilt-wing electric vertical take-off and landing (eVTOL) aircraft face distinctive safety challenges during transition due to configuration variations, highly nonlinear aerodynamics and coupled effects of distributed electric propulsion. These charac...
Adaptive cycle engines regulate the bypass ratio through variable geometry to reconcile low fuel consumption during subsonic cruise with high specific thrust during supersonic operation. This study investigates a two-shaft, two-bypass variable cycle...
Lateral intakes generate distorted inflow and complex swirl structures upstream of axial fans. Steady and unsteady numerical simulations were performed to investigate the coupled flow field between a lateral intake and an axial-fan rotor. The local n...
Repeated computational fluid dynamics (CFD)-based aerodynamic optimization requires both a compact design space and an inexpensive mesh-update procedure. This study presents a reduced-parameter-to-mesh framework in which low-dimensional variables act...
This paper formulates one operational day of a space data center, which processes client data onboard for a ground network, as a cross-domain co-flow program on one time-expanded network with cyclic boundary conditions, solves it as a linear program...
Low Earth Orbit (LEO) satellite constellations are emerging as a key enabler of next-generation global communications, but achieving low-latency and reliable routing across inter-satellite links (ISLs) remains a major challenge. This paper proposes a...
To address the high complexity and varying scale of swarm-to-swarm orbital pursuit–evasion games, this paper proposes a hierarchical decision-making framework consisting of a progressive spatial-coverage target assignment method and a scalable...
Reducing the emissions of the aviation sector will require innovative propulsion system solutions, maximizing as many system synergies as possible. For propulsion system concepts that include both a gas turbine and a fuel cell, utilizing the product...
To address online trajectory optimization problems subject to strict terminal-position and flight-direction constraints, this paper proposes an improved model predictive convex programming (MPCP) approach for closed-loop online trajectory prediction...
Some existing three-body cooperative guidance methods for terminal interception rely on the attacker’s future-maneuver prediction or explicit forecasting of its future maneuver and may require high overload demand. Therefore, this paper present...
With the continuous increase in airport operational pressure, frequent conflicts and declining efficiency in aircraft surface taxiing have become increasingly prominent. This paper addresses the problem of aircraft conflict resolution and taxi trajec...
This study proposes a simple, fast method for predicting fixed-pitch propeller axial thrust at various incidence angles and advance ratios. Based on the experimentally obtained results from the University of Dayton Low-Speed Wind Tunnel using off-the...
Free-floating space manipulators exhibit strong dynamic coupling between the robotic system and its spacecraft base, where configuration transitions may generate significant base-attitude disturbances. This paper proposes a constrained trajectory-pla...
The flowpath configuration of a scramjet combustor decisively governs its combustion performance. Scramjet combustors are generally classified into rectangular and circular cross-section types. For circular cross-section combustors, numerous flowpath...
We investigate equilibrium-consistent reservoir-computing (RC) prediction and adaptively weighted model predictive control (MPC) for a nonlinear pitch–plunge flutter benchmark at
The rapid expansion of the satellite constellation market requires spacecraft platforms designed for highly scalable manufacturing, increased production throughput, and agile integration workflows. This work presents the mechanical optimization of th...
In multi-hop UAV ad hoc networks, three-dimensional high mobility, strong line-of-sight interference and a hard saturation constraint on control-plane broadcasting distinguish the channel load estimation problem from its terrestrial counterpart: the...
Discovering design rules is essential for advancing interpretable and intelligent propeller design. This paper proposes a knowledge–data hybrid-driven method for discovering design rules for high-efficiency propellers, with the aim of expanding...
Accurate prediction of plasma composition during the phase transitions of ablation products remains challenging under thermodynamic nonequilibrium conditions. To address this issue, a plasma composition calculation method based on an electron–h...
Future commercial engines require higher bypass ratios and smaller cores, leading to open tip clearances exceeding 4% (s/H ≥ 4%) in rear stages. The resulting leakage flows show strong three-dimensional unsteady features that challenge numerical p...
The management of NOTAMs on the flight deck remains a challenge for flight crews, who must process large volumes of dense textual information to identify the notices relevant to their mission. Despite ongoing modernisation efforts, the NOTAM system s...
The micro xenon gas flow control module is mainly applied to the feed system of hundred-watt Hall electric propulsion. Two-channel microflow control is realized via structural design to meet the flow requirements of the anode and cathode of the Hall...
The growing adoption of artificial intelligence in space communications has imposed increasingly demanding efficiency requirements on deep learning training for tasks such as intelligent signal processing and resource allocation. However, performance...
Quadruped navigation for future lunar missions requires route selection over unstructured terrain that accounts for terrain characteristics and controller execution capabilities. Fixed geometric rules cannot fully capture controller-specific executio...
This study develops a graded-compliance, metal-packaged fiber Bragg grating (FBG) strain sensor for cryogenic structural health monitoring of metallic propellant tanks and pipelines on reusable launch vehicles (RLVs). The serially connected frame ena...
A one-dimensional combustion-path model is developed to relate wave-speed deficits to axial-force production in non-premixed rotating detonation rocket engines. Incoming propellant is partitioned into full detonation, attenuated-front combustion, par...
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