The first step in design for noise is preliminary aerodynamic design to ensure smooth airflow. This includes optimizing the blade shape, angle, and spacing for low noise and high efficiency.
Extreme Fans, Blowers, and Air Movers for Aerospace and Defense
Bascom Hunter provides best-in-class air-movement solutions for the demanding requirements of aerospace and defense platforms with vane axial, mixed flow, and centrifugal fans and blowers. Our high-efficiency, low-noise systems are modular and customizable, with varying diameters and motor types and the capabilities to produce a wide range of flow rates and air pressures, according to the specific needs of the customer. Our existing production lines allow for cost-effective implementation of our fans into newly developed or retrofitted systems, and we can also design a custom fan from the ground up to meet your requirements. If an existing fan does not meet your requirements, our Power and Control Group can design a custom fan for your application. Bascom Hunter fans are the current choice for numerous customers in the aerospace and defense market.
Our air movers are powered by high-speed, direct drive electric motors. This allows the air movers to be compact and lightweight package. Our fans are designed to accept various drive and motor types including 400Hz induction synchronous motors, brushless direct current motors, and permanent magnet synchronous motors. Fan voltage options include:
- 115V/ 200V – 400 Hz (AC)
- 28 V (DC)
- 270 VDC
- 600 VDC
Bascom Hunter also produces shaft-driven fans and blowers in accordance with customer requirements. Our fans can also be driven with hydraulic motors.
Designed for High Performance
Bascom Hunter specializes in the design and manufacturing of high-power density air movers with significant experience in vane axial and centrifugal fan development. The Bascom Hunter fan catalog ranges from a few CFM flow to flow rates greater than 18,000 CFM.
In addition, these fans are designed for high operating temperatures. These fans are developed by integrating patented aerodynamic and thermal design in a multidisciplinary optimization process between the aerodynamic, electromagnetic, and mechanical design engineering activities. The resulting fans have demonstrated high performance characteristics, low noise, and high efficiency in a compact form factor.
Designed for Low Noise
Our Power and Control Group has extensive reference designs and products that have comprehensive noise test results. This allows for high confidence in design of new fans for high performance while minimizing the noise.
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Bascom Hunter fans are designed for low noise, which requires several key considerations and techniques to minimize noise while maintaining efficiency and performance. The major steps in the design for low noise process includes:
Aerodynamic Design 
Blade Count and Design
The number of blades and their design can significantly impact noise levels and the specific noise frequencies.
Rotor-Stator Interaction
The tone noise can be optimized by carefully selecting the number of stator vanes to specifically avoid combinations of rotor and stator blade counts that amplify noise.
Tip Clearance
The tip clearance is the gap between the blade tips and the casing in a fan. This gap can significantly impact fan noise due to tip leakage, vortex formations, pressure fluctuations and aerodynamic losses.
Structure Born Noise
The fan and motor drive architecture are designed for low noise and vibration through multidisciplinary design and material selection.
Motor Noise
The electric motor can be a major source of noise. The motor and motor drive needs to be designed to make sure items such as current ripple and phase noise is minimized.
Proven Design and Customization
QUIET, SMALLER, LIGHTER, BETTER FLOW
Bascom Hunter specializes in making mission critical equipment for aircraft and military vehicles. Our proven designs are agile and modular, allowing us to provide rapid, cost-effective solutions to our customers across a wide variety of applications. We also have the engineering expertise and capability to create new systems from the ground up, depending on the needs of our customer. All our products are backed by our long-term service and support commitments. Contact us with your requirements today.
Force
Bascom Hunter’s Force family of vane axial fans are lightweight, compact, low-noise solutions for aerospace and defense, delivering 150–3,400 CFM with AC or DC motor options.
Galeforce
Bascom Hunter’s Galeforce series delivers high-performance vane axial fans engineered for aerospace and defense. Lightweight, compact, and low-noise, these fans feature 5-axis machined impellers and guide vanes for maximum efficiency. Offering 200–20,500 CFM of airflow, Galeforce fans support AC or DC power with a range of motor options.
Helios
Bascom Hunter’s Helios series are high-performance centrifugal fans built for high-pressure aerospace and defense applications, delivering up to 40 in. WC and 50–9,000 CFM in a lightweight, compact, low-noise design.