Results 71 to 80 of about 47,836 (211)

Numerical Investigation of Ventilated Cavities Around a Rudder-Equipped Axisymmetric Body

open access: yesFluids
As an efficient drag reduction technique, ventilated cavity technology demonstrates significant application in underwater launch systems. This study employs numerical simulations to systematically examine the ventilated cavity flow characteristics and ...
Wanyun Xu   +5 more
doaj   +1 more source

AI‐Based Autonomous Sailboat Navigation: A Review

open access: yesJournal of Field Robotics, Volume 42, Issue 8, Page 4157-4180, December 2025.
ABSTRACT This review explores the recent advancements in AI‐driven autonomous sailboat navigation, underscoring its pivotal role in ocean monitoring and real‐time maritime data collection. Drawing on an extensive range of primary and secondary sources, the study critically evaluates current challenges, innovative control algorithms, and path planning ...
Vishali Mankina   +6 more
wiley   +1 more source

Flight-measured X-24A lifting body control surface hinge moments and correlation with wind tunnel predictions [PDF]

open access: yes
Control-surface hinge-moment measurements obtained in the X-24A lifting body flight-test program are compared with results from wind-tunnel tests. The effects of variations in angle of attack, angle of sideslip, rudder bias, rudder deflection, upper-flap
Pearson, G. P. E., Tang, M. H.
core   +1 more source

A UAV Air Combat Trajectory Prediction Method Based on QCNet

open access: yesCAAI Transactions on Intelligence Technology, Volume 10, Issue 6, Page 1661-1674, December 2025.
ABSTRACT The Unmanned Aerial Vehicle (UAV) air combat trajectory prediction algorithm facilitates strategic pre‐planning by predicting UAV flight trajectories with high accuracy, thus mitigating risks and securing advantages in intricate aerial scenarios.
Zhang Jiahui, Meng Zhijun, He Jiazheng
wiley   +1 more source

Aircraft control position indicator [PDF]

open access: yes, 1987
An aircraft control position indicator was provided that displayed the degree of deflection of the primary flight control surfaces and the manner in which the aircraft responded.
Dennis, Dale V.
core   +1 more source

Numerical Investigation of Coupled Oblique Flow and Steering Effects on Hydrodynamic Performance of Rudder Behind Propeller

open access: yesJournal of Marine Science and Engineering
The hydrodynamic performance of a rudder behind a propeller is critical for determining vessel maneuvering stability. During navigation, the coupled effects of the oblique flow angle (β) and the rudder angle (δ) significantly alter the wake velocity ...
Weiguan Chen   +5 more
doaj   +1 more source

Development of a safe operation capability chart as the design basis of a rudder area

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2018
Ship owners now demand a new design approach for the rudder that considers detailed design information such as maneuverability and environmental loads etc. on a quantified basis.
Youngjun You, Sewon Kim, Woojin Kim
doaj   +1 more source

Independent Orbiter Assessment (IOA): Analysis of the rudder/speed brake subsystem [PDF]

open access: yes
The results of the Independent Orbiter Assessment (IOA) of the Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) are presented. The IOA approach features a top-down analysis of the hardware to determine failure modes, criticality ...
Riccio, J. R., Wilson, R. E.
core   +1 more source

Numerical and experimental study on flutter characteristics of a wing with drag rudder

open access: yesKongqi donglixue xuebao
The drag rudder serves as an unconventional control surface specifically designed for flying wing aircraft. Positioned near the wingtips, the drag rudder splits to generate drag force and yawing moments, which exhibits significant nonlinear ...
Yongchang LI   +6 more
doaj   +1 more source

Effects of control inputs on the estimation of stability and control parameters of a light airplane [PDF]

open access: yes
The maximum likelihood parameter estimation technique was used to determine the values of stability and control derivatives from flight test data for a low-wing, single-engine, light airplane. Several input forms were used during the tests to investigate
Cannaday, R. L., Suit, W. T.
core   +1 more source

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