Aerodynamic Improvement Products

VG Engineering can provide acoustically lined and un-lined augmentor tubes for new, up-grade and retrofit applications. Augmenter tubes, sometimes referred to as detuners are designed according to operational use requirements such as; mass flow, temperature, velocity (Mach Number), vibration and sound. Augmentor tubes stabilize the engine efflux and provide adequate mixing of engine and entrained cooling air flow prior to noise attenuation through the silencer system. Correct design ensures that sufficient cooling air mass flow is provided for reliable operation without raising the test cell depression or effecting engine performance. Our augmenter tube designs allow for unstressed thermal growth while the fabrication uses suitable materials and technics to protect against elevated temperatures and thermal cycling together with corrosion caused by the combustion by-products. Where an acoustically lined system is required, a composite system of ceramics, basalt and high temperature e-glass are used to protect against thermal shock, vibration and erosion that are common issues especially in jet engine afterburner or reheat applications.
VG Engineering turning vane cascade systems are optimized for efficient air flow redirection over a wide range of angles and sizes. Turning Vane systems can be provided with a precision aerodynamic blade profile and acoustic absorption to minimize pressure drop and self-noise generation as air passes through the turning vane cascade. Static and movable turning assemblies can be provided. Movable turning vanes can pivot and lift, with counter balanced and interlocked, motorized drive mechanisms to allow equipment access. VGE provides Turning Vanes for a wide range of applications including:

  • Industrial fan ducts
  • Wind tunnels
  • Aero-engine test facilities
  • Aircraft Ground Run-up Pens and Enclosures
VG Engineering produced flow straighteners or flow conditioners provide the ability to present a swirl free, fully developed flow profile to the plane of measuring devices and machinery where space for straight runs of pipe or duct is not available or practical. CFD Design of our flow straighteners is based upon the customer equipment requirements for geometric and dynamic similarity to the calibration conditions to give repeatable, error free measurement for a range of fluids and gases. Variations of perforated plate, honeycomb structures and tube stack flow designs consider velocity profile, turbulence intensity and swirl characteristics of the flow.

Typical applications include:

  • Aircraft engine testing facilities
  • Compressor testing facilities
  • Fan inlets
  • Wind tunnels
  • Paint spray booths
VG Engineering provides flow ejectors that improve the “pumping efficiency” of a prime mover system using the primary flow to entrain secondary flow to reduce the velocity and temperature of the mixed medium. The geometry of our flow ejector designs maximize the desired mixed flow mass to improve performance and the system efficiency. Flow ejectors are designed for a range of applications including:

  • Aero-jet engine test cells
  • Power generation gas turbine exhaust systems
  • Forced Draft Fan applications
Our flow diffusers are designed to improve the uniformity of flow velocity and temperature of gases and fluids across the entire cross section of the area. The use of a diffuser within a system optimizes the flow pattern, spread and linearization of the flow, to minimize turbulence, increase system flow efficiency and improving acoustic characteristics by reducing self-noise. Flow diffusers can be designed in a range of size and mounting types to meet customer system requirements. An ideal retrofit to improve existing flow issues in process systems including:

  • Heat exchangers to improve operating efficiency
  • Power generation Gas Turbine Exhaust Systems
  • Industrial Fan Exhaust Systems
  • Aero-engine Test Cells
  • Wind Tunnels
VG Engineering provides highly-engineered static flow mixing devices to continuously blend gases and fluids within air plenums, exhaust or intake systems, ducts or pipelines. Our flow mixers have no moving parts, using the flow stream energy to provide a consistently homogeneously mixed medium, efficiently, optimizing the system performance with no maintenance.