The SAE MOBILUS platform will continue to be accessible and populated with high quality technical content during the coronavirus (COVID-19) pandemic. x

Your Selections

Pneumatic systems
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

new

Spring Drive Fitting

  • Magazine Article
  • TBMG-36183
Published 2020-03-01 by Tech Briefs Media Group in United States

Valve and tube manufacturers continue to battle the problem of fitting pipes and tubing together quickly and reliably. The spring drive fitting addresses this challenge, bridging the gap between solutions for small-diameter tube fittings commonly seen in high-pressure, low-flow-area pneumatic systems and solutions for large flanges used in low-pressure, high-flow-area hydraulic systems.

Valves for Pneumatic Cylinders and Actuators

  • Magazine Article
  • TBMG-36005
Published 2020-02-01 by Tech Briefs Media Group in United States

In the pneumatic world, valves are the equivalent of relays controlling the flow of electricity in automation systems. Instead of distributing electric power to motors, drives, and other devices, pneumatic valves distribute air to cylinders, actuators, and nozzles.

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Optimization of Pneumatic Network Actuators with Isosceles Trapezoidal Chambers

SAE International Journal of Materials and Manufacturing

Nanjing University of Aeronautics and Astronautics, China-Shuxin Wang
Southeast University, China-Fangyu Zhou, Juekuan Yang
  • Journal Article
  • 05-12-03-0016
Published 2019-10-04 by SAE International in United States
Soft actuators with pneumatic network have innovative potential applications in medical and rehabilitation areas. The performance of this kind of actuators is determined by the design of chambers and the properties of the active extensible layer and the passive inextensible layer. In this article, actuator with isosceles trapezoidal chambers is proposed. Orthogonal experiment design and finite element method are used to optimize the structure of actuators. Results indicate that adding constrain-limiting paper in the passive layer can significantly reduce the bending radius. Position of the paper in the passive layer also affects the bending radius. Actuators with trapezoidal chambers can have a smaller bending radius compared with that with rectangle chambers. The bending radius decreases as the ratio of short base to long base of trapezoid decreases. Increasing the number density of chambers can further reduce the bending radius. In addition, we find that the optimized actuator not only has a smallest bending radius but also can exert a largest force at its tip.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

A New Positioning Device Designed for Aircraft Automated Alignment System

Shanghai Jiao Tong University-Jie Huang, Long Yu, Yuhan Wang
Shanghai Top NC Tech Co Ltd-Yilian Zhang
Published 2019-09-16 by SAE International in United States
Accurate and fast positioning of large aircraft component is of great importance for Automated Alignment System. The Ball joint is a widely-used mechanical device connecting the aircraft component and positioners. However, there are some shortcomings for the device in man-machine engineering, such as the entry state of the ball-head still needs to be confirmed by the workers and then switched to the locking state manually. To solve above problems, a new positioning mechanism is present in this paper, which consists of a ball-head and a ball-socket. The new device is equipped with a monocular vision system, in which a calibrated industrial camera is used to collect the images of the ball-head. And then, the 3-D coordinate of the ball-head center is calculated by a designed algorithm, guiding the positioner to capture the ball-head. Once the ball-head gets into the ball-socket, the pneumatic system will drive the pistons to move to the specified location. Meanwhile, the amount of compression of a set of springs has changed, so the steel balls are compelled to compress, contact or…
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Preliminary Design of Hydraulic and Pneumatic System Architectures for a Morphing Flight Control Structure

German Aerospace Center DLR-Michael Schäfer, Andreas Schäfer, Oliver Bertram
Published 2019-09-16 by SAE International in United States
Bionics in aeronautics has the potential to increase the performance and efficiency of aircraft significantly. Inspired by the wings of birds, morphing wing structures have been extensively investigated over the last decades. The continuous adaption of the wings over a large scale of the flight envelope enables an optimization of the aerodynamic characteristics and, this way, a reduction of the fuel consumption. Additionally, those structures could support or replace traditional flight control surfaces. Depending on the morphing technology, different systems may be suitable to actuate the morphing structure. An early inclusion of the system architecture into the development of the morphing technology enables designing an optimal system in compliance with all requirements. Therefore, this paper discusses the conceptual design of system architectures for a novel morphing wing structure that is used for flight control. The benefits of morphing structures for aircraft applications are shown and the functionality of the used morphing structure is introduced. The morphing structure was designed to be actuated by fluids and is compatible with different gases and liquids. Since the fluid…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

HOSE ASSEMBLY, METAL - MEDIUM PRESSURE, FLARED, WELDED, STRAIGHT TO 90°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5460C
  • Current
Published 2019-06-03 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

HOSE ASSEMBLY, METAL - MEDIUM PRESSURE, FLARED, WELDED, 45° TO 45°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5461C
  • Current
Published 2019-06-03 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

HOSE ASSEMBLY, METAL - MEDIUM PRESSURE, FLARED, WELDED, 90° TO 90°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5463C
  • Current
Published 2019-06-03 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

HOSE ASSEMBLY, METAL - MEDIUM PRESSURE, FLARED, WELDED, STRAIGHT TO 45°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5459C
  • Current
Published 2019-06-03 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

HOSE ASSEMBLY, METAL - MEDIUM PRESSURE, FLARED, WELDED, 45° TO 90°

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5462C
  • Current
Published 2019-06-03 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available