Aeroacoustic Wind Tunnel Quiz

Aeroacoustic wind tunnels are primarily designed to study:

• Lift and drag coefficients

• Noise generated by airflow

• Structural vibrations

• Engine thrust efficiency

The settling chamber in an aeroacoustic tunnel helps in:

• Accelerating airflow

• Removing turbulence and straightening the flow

• Generating airflow

• Measuring acoustic intensity

The contraction section of a wind tunnel:

• Slows down the airflow

• Mixes hot and cold air

• Accelerates and smooths the airflow

• Filters out particles

In an aeroacoustic tunnel, acoustic treatment on walls is used to:

• Increase noise levels

• Reduce echoes and reflections

• Increase air pressure

• Improve fan performance

The NASA Icing Research Tunnel (IRT) is located at:

• Langley Research Center

• Lewis Research Center, Cleveland, Ohio

• Ames Research Center

• Goddard Space Flight Center

The NASA IRT was designated as an International Historic Mechanical Engineering Landmark in:

• 1976

• 1986

• 1996

• 2006

Which feature in the IRT produces supercooled droplets?

• Nozzle reservoir

• Spray bars with nozzles

• Mixing chamber

• Conducting pipe

The 2100-ton cooler in the NASA IRT was designed by:

• Willis Carrier

• NACA

• Boeing

• Lockheed Martin

The 25-foot fan of NASA’s IRT is made of:

• Aluminum

• Carbon fiber

• Sitka spruce wood

• Stainless steel

In the spray bar mechanism, the purpose of the pressurized water pipe is to:

• Heat air

• Supply water for droplet formation

• Control air velocity

• Cool the substrate