Owing to the chaotic and non-integrable nature of three-body dynamics, the conventional Keplerian elements are rendered inadequate for cataloging cislunar space objects. Currently, there has been a conspicuous absence of universally recognized parameters for the characterization and cataloging of such objects, posing a significant impediment to effective cislunar space situational awareness. This research published in the Chinese Journal of Aeronautics proposes a novel approach to parameterize the orbits of the Earth-Moon collinear libration points by leveraging the theoretical frameworks of canonical transformations. Six characteristic parameters are established, which maintain a bijective correspondence with the state variables. Specifically, two parameters define the motion of the invariant manifold, while the remaining four parameters characterize the dynamics of the central manifold. Based on the parameters of central manifold, a situation map for depicting the distribution of libration point objects was developed, and its application in orbit identification was explored. This method furnishes novel instrumentation for enhanced space situational awareness and target cataloguing within the cislunar domain, enabling operators to effectively tag, track and manage cislunar objects with a compact, uncertainty-quantified parameter set.

A research team from the Beijing Institute of Technology (BIT) and Yinhe Hangtian has achieved a major advance in orbit mechanics by developing an analytical method capable of directly predicting spacecraft trajectories under third-body gravitational perturbations. This work, recently published in the Chinese Journal of Aeronautics, resolves a long-standing challenge in celestial dynamics and provides a new theoretical tool for deep-space exploration and autonomous spacecraft control.

The wide-speed-range vehicles have attracted significant attention due to the exceptional performance in autonomous aerospace operations. In a recent innovative study published in the Chinese Journal of Aeronautics, a double swept waverider employing novel vortex-wave coupling technology has addressed the fundamental compromise between high-speed shockwave management and low-speed vortex lift utilization. By integrating basic flow field design with an Improved Multi-Objective Cuckoo Search algorithm, this configuration achieves breakthrough wide-speed-range performance, laying a critical foundation for the development of horizontal take-off and landing aerospace vehicles.

The notion of employing detonation to enhance aerospace propulsion systems has been explored for several decades. In a recent breakthrough, a novel detonation engine known as the Ram-Rotor Detonation Engine has emerged. This innovative engine integrates the processes of propellant compression, detonation combustion, and expansion within a single rotor, enabling it to markedly enhance propulsion efficiency across a broad range of flight Mach numbers.

A key challenge in parallel adaptive Cartesian grid generation is significant computational load imbalance during k‑d tree searches. A new Dynamic Partition Weight approach, published in the Chinese Journal of Aeronautics (https://doi.org/10.1016/j.cja.2025.103921), solves this by predicting each cell’s required k‑d tree iterations and performing intelligent load rebalancing. This method enables the generation of billion‑cell grids for complex aircraft models in less than a minute, offering a breakthrough for high‑fidelity CFD simulations.

Exosomes facilitate cell-to-cell communication and are involved in key biological processes. Understanding the mechanisms regulating exosome production could offer new therapeutic insights for various diseases. Here, Prof. Zhong’s team demonstrates that exosome secretion is significantly inhibited when glucose is replaced with galactose as the primary carbon source in the culture medium. This glycometabolic regulation of exosome secretion is dependent on the cellular hexosamine biosynthetic pathway (HBP). Inhibition of HBP via gene knockdown, pharmacological blockade, or metabolite deprivation markedly suppresses exosome secretion. Mechanistically, HBP regulates multivesicular body (MVB) outward trafficking and its fusion with the plasma membrane via synaptosomal-associated protein 25 (SNAP25). O-GlcNAcylation of SNAP25 promotes soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complex assembly, thereby facilitating exosome release. In summary, these findings reveal a critical role of HBP and protein O-GlcNAcylation in exosome secretion, which may provide new therapeutic targets for exosome-associated diseases, including cancer and inflammatory disorders.