Results 81 to 90 of about 2,824,115 (285)
Analysis and development of autonomous flight system for a multi-propeller drone
, 2023 reservedLe valanghe rappresentano una delle principali minacce per coloro che praticano attività in montagna. La ricerca di persone sepolte in seguito a tali eventi costituisce un compito delicato e cruciale, la cui efficacia dipende in gran parte dalla
SARTOR, MATTIA
core
Improved Radar Detection of Small Drones Using Doppler Signal-to-Clutter Ratio (DSCR) Detector
, 2023 The detection of drones using radar presents challenges due to their small radar cross-section (RCS) values, slow velocities, and low altitudes. Traditional signal-to-noise ratio (SNR) detectors often fail to detect weak radar signals from small drones ...
Huiping Hu +4 more
core +1 more source
Advanced Engineering Materials, EarlyView.Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees +6 more
wiley +1 more source
Folder 3: Model engine data sheets and operating instructions, C - D, 1946, 1950, 1960
, 1946 Operating manual for the Drone Diesel model engine.
Drone Engineering Inc.
core +1 more source
Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials
Advanced Engineering Materials, EarlyView.Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley +1 more source
ATMOSPHERIC ENVIRONMENT DETECTION METHOD BASED ON MULTI-ROTOR UAV PLATFORM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 For the method of atmospheric detection based on multi-rotor UAV, the effects of flight safety and airflow on detection accuracy are analyzed. The detector mounted on the multi-rotor drone should be highly symmetrical and the center of gravity should be ...
A. Shen +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn +5 more
wiley +1 more source
Aerial Threat Detection around Critical Infrastructures: Drone Trajectory Analysis and Behavior Profiling [PDF]
, 2023 openIn recent times, the utilization of drones has seen a significant increase across both civilian and military domains. Within the military sphere, these UAVs (Unmanned Aerial Vehicles) exhibit the capacity to engage targets at extended distances ...
COSUTI, LUCA
core
Advanced Engineering Materials, EarlyView.Gallium microalloying redirects interfacial reactions in low‐temperature Bi–Sn solders from Cu–Sn toward Cu–Ga intermetallic formation. The resulting Cu–Ga layer suppresses intermetallic growth during thermal aging, alters fracture pathways, and improves interfacial stability.
Iva Králová +6 more
wiley +1 more source
Evaluation of Additive Manufacturing Techniques to Increase Drone Radar Detection Range
DronesThe deployment of drones in civil airspaces has increased rapidly in recent years. However, their small radar cross-section hinders detectability by existing surveillance systems.
Christian Maya +2 more
doaj +1 more source