Smart-Material Based Hydraulic Pump System for Actuation of a Morphing Wing

Sneed, Ryan C.; Smith, Roland R.; Cash, Michael F.; Anderson, Eric H.

doi:10.2514/6.2007-1702

Cited by 6 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has higher actuation stresses in comparison with solenoid and moving-coil transducers (Kim and Sadighi, 2010). Magnetostrictive materials have been used to drive hydraulic pumps (Bridger et al, 2004; Chaudhuri et al, 2009; Sneed et al, 2007). The principle is similar to that of the piezoelectric pump.…”

Section: Actuatorsmentioning

confidence: 99%

Morphing aircraft based on smart materials and structures: A state-of-the-art review

Sun

Guan

Liu

et al. 2016

Journal of Intelligent Material Systems and Structures

283

137

View full text Add to dashboard Cite

A traditional aircraft is optimized for only one or two flight conditions, not for the entire flight envelope. In contrast, the wings of a bird can be reshaped to provide optimal performance at all flight conditions. Any change in an aircraft’s configuration, in particular the wings, affects the aerodynamic performance, and optimal configurations can be obtained for each flight condition. Morphing technologies offer aerodynamic benefits for an aircraft over a wide range of flight conditions. The advantages of a morphing aircraft are based on an assumption that the additional weight of the morphing components is acceptable. Traditional mechanical and hydraulic systems are not considered good choices for morphing aircraft. “Smart” materials and structures have the advantages of high energy density, ease of control, variable stiffness, and the ability to tolerate large amounts of strain. These characteristics offer researchers and designers new possibilities for designing morphing aircraft. In this article, recent developments in the application of smart materials and structures to morphing aircraft are reviewed. Specifically, four categories of applications are discussed: actuators, sensors, controllers, and structures.

show abstract

Section: Actuatorsmentioning

confidence: 99%

Morphing aircraft based on smart materials and structures: A state-of-the-art review

Sun

Guan

Liu

et al. 2016

Journal of Intelligent Material Systems and Structures

283

137

View full text Add to dashboard Cite

show abstract

“…Optimum matching for a 1 inch (25.4 mm) diameter 3 3.125 inch (79.4 mm) long Terfenol rod was achieved with a 1.25 inch (32 mm) diameter piston and 0.1 inch (2.5 mm) chamber height. Under the smart material actuated servo hydraulics (SMASH) program, CSA Engineering Inc. (Anderson and Garg, 2002;Anderson et al, , 2003 reported the development of several hybrid actuators, including a magnetostrictive hydraulic actuator with a power output exceeding 100 W (Sneed et al, 2006(Sneed et al, , 2007. The maximum no-load flow rate was 0.4 gpm (25.2 cm 3 /s), and the maximum developed pressure was 1700 psi (11.7 MPa).…”

Section: Commercial Developmentsmentioning

confidence: 99%

Compact hybrid electrohydraulic actuators using smart materials: A review

Chaudhuri

Wereley

2011

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

The development of compact hybrid electrohydraulic actuators driven by various smart materials has been widely reported in the literature in recent years. Such solid-state-induced strain actuators have applications in a variety of aerospace and automotive and mechanical engineering fields. These devices are capable of producing high stroke (or displacement) and high force (or pressures) in a compact form factor by utilizing the large bandwidth and energy density of currently available smart materials. The basic operation of these hybrid actuators involves high-frequency bidirectional operation of an active material that is converted to unidirectional motion of a hydraulic fluid by a set of valves. Over the last decade, several prototype hybrid actuators have been designed using piezoelectric (PZT-5H), magnetostrictive (Terfenol-D), and electrostrictive (PMN-PT) materials as the driving elements, with actuation frequencies ranging from 10 Hz to 1 kHz. Power outputs and volumetric flow rates have reached up to 20 W and 40 cm3/s, respectively. Different mathematical models have been developed to evaluate the performance of these hybrid actuators. While early efforts focused on a simple, quasi-static approach to simulate pump operation, more complex dynamic models have been recently developed to capture the complex interaction between the smart material and the transmission fluid at high operating frequencies. The objective of this survey is to review the state-of-the-art in compact hybrid electrohydraulic actuation systems and to summarize design and modeling efforts.

show abstract

“…On the other hand, polymeric memory materials could be used for morphing wings. Such materials are able to reduce the overall mass of wings (Yazik and Sultan 2019;Tsushima 2020;Sneed 2007).…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic and Aeroacoustic Performance of a Wing with Structured Surface Inspired by Owl’s Wings

2022

JAFM

View full text Add to dashboard Cite

With the advent of various advanced materials, the idea of flying like birds has attracted considerable attention in recent years. In addition, aeroacoustics has become an important issue and is being widely studied. In this work, based on the shape of Owls' wings, an attempt was made to improve the aeroacoustic and aerodynamic performances of conventional aircraft wings. For this purpose, wings with different elements, namely, square, triangular, and semicircular, on their top surface were examined. In addition, three different spatial distributions of the elements according to the Owl's wings shape were considered. For incompressible airflow, aerodynamic and aeroacoustic parameters of wing with structured surfaces were investigated. Also, a wing with serrations was examined. The results indicate that wings with elements distributed starting from maximum section thickness and continuing up to the trailing edge are the most suitable case for both aerodynamic and aeroacoustic improvements. On the other hand, a two-sided serrated wing and a serrated wing in the trailing edge reduce the sound level significantly. In addition, the use of both elements and serrations delays wing stall and thus markedly increases the maximum lift coefficient.

show abstract

Smart-Material Based Hydraulic Pump System for Actuation of a Morphing Wing

Cited by 6 publications

References 9 publications

Morphing aircraft based on smart materials and structures: A state-of-the-art review

Morphing aircraft based on smart materials and structures: A state-of-the-art review

Compact hybrid electrohydraulic actuators using smart materials: A review

Aerodynamic and Aeroacoustic Performance of a Wing with Structured Surface Inspired by Owl’s Wings

Contact Info

Product

Resources

About