Open doors for bob and mallory: Open port usage in android apps and security implications

YJ Jia, QA Chen, Y Lin, C Kong… - 2017 IEEE European …, 2017 - ieeexplore.ieee.org
Open ports are typically used by server software to serve remote clients, and the usage
historically leads to remote exploitation due to insufficient protection. Smartphone operating …

Swashplateless helicopter rotor system with trailing-edge flaps for flight and vibration controls

J Shen, M Yang, I Chopra - Journal of Aircraft, 2006 - arc.aiaa.org
THE use of trailing-edge flaps for primary flight control started as early as 1922 when
Pescara incorporated plain flaps for blade pitch control. 1 The trailing-edge flap provides …

Continuation and bifurcation analysis in helicopter aeroelastic stability problems

D Rezgui, MH Lowenberg, M Jones… - Journal of Guidance …, 2014 - arc.aiaa.org
The dynamics of rotary wing systems are complex and typically feature highly nonlinear and
often unsteady aerodynamics, as well as aeroelastic influences. In ongoing efforts to reduce …

New combinational active control strategy for improving aerodynamic characteristics of airfoil and rotor

Y Ma, Q Zhao, G Zhao - Proceedings of the Institution of …, 2020 - journals.sagepub.com
In order to improve the aerodynamic characteristics of rotor, a new active flow control
strategy by combining a synthetic jet actuator and a variable droop leading-edge or a trailing …

Numerical and experimental analysis on the helicopter rotor dynamic load controlled by the actively trailing edge flap

ZX Zhou, XC Huang, JJ Tian, HX Hua… - Smart Materials and …, 2022 - iopscience.iop.org
Reducing the rotor dynamic load is an important issue to improve the performance and
reliability of a helicopter. The control mechanism of the actively controlled flap (ACF) on the …

Analysis of Rotorcraft Vibration Reduction Using a Center-of-Gravity Offset

Y Yoshizaki, S Sunada - TRANSACTIONS OF THE JAPAN SOCIETY …, 2023 - jstage.jst.go.jp
When a rotorcraft has N blades, N/rev vibration becomes large as the cruise speed
increases. This article numerically examines the effect of Center-of-Gravity (CG) offset on …

Aeroelastic analysis of rotor systems using trailing edge flaps

IG Lim, I Lee - Journal of Sound and vibration, 2009 - Elsevier
An aeroelastic analysis of rotor blades with trailing edge flaps was conducted using large
deflection-type beam theory for forward flight conditions with a focus on reducing vibration …

Research of Unsteady Aerodynamic Characteristics of Electrically Controlled Rotor Airfoils with Trailing-Edge Flaps

C Liang, H Li, T Su, CA Frank, K Li - Aerospace, 2023 - mdpi.com
An electrically controlled rotor (ECR), also known as a swashplateless rotor, eliminates the
swashplate system to implement the primary control via the trailing-edge flaps (TEFs), which …

Structural and mechanism design of an active trailing-edge flap blade

JH Lee, B Natarajan, WJ Eun, SR Viswamurthy… - Journal of Mechanical …, 2013 - Springer
A conventional rotor control system restricted at 1/rev frequency component is unable to vary
the hub vibratory loads and the aeroacoustic noise, which exist in high frequency …

[图书][B] Comprehensive aeroelastic analysis of helicopter rotor with trailing-edge flap for primary control and vibration control

J Shen - 2004 - search.proquest.com
A comprehensive aeroelastic analytical model of helicopter rotors with trailing-edge flaps for
primary and vibration controls has been developed. The derivation of system equations is …