Evidence map›Paper›PMID 40901965›Full record

ArticleScience advances2025

Flapping-wing robot achieves bird-style self-takeoff by adopting reconfigurable mechanisms.

Ang Chen, Bifeng Song, Kang Liu, Zhihe Wang, Dong Xue, Hongduo Qi

Abstract read
In one paragraph

Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Ang ChenSchool of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.ORCID 0000-0001-6491-6139
Bifeng SongSchool of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.
Kang LiuSchool of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.
Zhihe WangSchool of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.
Dong XueSchool of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.ORCID 0000-0001-6364-6499
Hongduo QiSchool of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Flying vertebrates use specialized wingbeat kinematics in hovering, takeoff, and landing, featuring ventrally anterior downstrokes and aerodynamically inactive upstrokes to enhance aerodynamic characteristics at low airspeeds. Rarely implemented in robotics, this inspired RoboFalcon2.0, a flapping-wing robot with reconfigurable mechanisms performing bioinspired flap-sweep-fold (FSF) motion for controlled bird-style takeoff. FSF couples flapping, sweeping, and folding within a single wingbeat cycle, mimicking vertebrate slow-flight kinematics. Wind tunnel tests demonstrate that sweeping amplitude modulates lift and pitching moment in FSF motion. Computational fluid dynamics simulations reveal that FSF's aerodynamic effects correlate with leading-edge vortex strength and pressure center location. Dynamics simulations analyze pitch control during takeoff. Real-world flights validate RoboFalcon2.0's self-takeoff capability. This work advances avian-inspired robotics through vertebrate-like actuation principles, enabling more biomimetic flapping-wing designs.

Indexed as

BirdsFlight, AnimalRoboticsWings, AnimalAnimalsBiomechanical PhenomenaBiomimeticsComputer SimulationHydrodynamics

Identifiers

PMID40901965
PMCPMC12407090

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.