the purpose is they can find the best shape to go with the wind
Without wind tunnel testing and other testing, testing in flight would be even more dangerous to the test pilot, and anyone killed should the aeroplane crash.
A subsonic wind tunnel is a wind tunnel that cannot take testing to Mach 1 (the speed of sound). There are a wide variety of wind tunnels, and they come in a broad range of sizes, too. They span models from ones that test motorcycle helmets to ones that test a whole small aircraft or aircraft model. A link is provided to the Wikipedia article on the wind tunnel, and you'll find that link below.
Malcolm Sayer (For Jaguar) - He was an aircraft designer who moved to Jaguar and designed the iconic E type Jaguar. This was the first vehicle to be tested in a wind tunnel. With respect to the previous contributor, development of another "iconic" automobile, the SAAB 92, was underway more than a decade before Jaguar began development of the E-type. The SAAB 92, developed by aircraft engineers & designers, was one of the first (if not the first) moderately-priced, volume-produced car whose shape was perfected through wind tunnel testing. Its coefficient of drag in the low 0.30s backs up that claim.
Frank wenham invented the first wind tunnel in 1871 in Greenwich England with his colleague John Browning
They did developmental work on the Wind Tunnel, and other aircraft related devices. a model of a Wright Bros Wind tunnel is on display- occasionally run-up at the Franklin Institute in Philadelphia-( a museum open to the public) they also have a more modern Load cell type wind tunnel for testing model wing sections-this is about 6-l0 feet long as is the Wright prototype of l902. The Bros. made an improvised printing press as youngsters but this was probably not patented.
more money
Without wind tunnel testing and other testing, testing in flight would be even more dangerous to the test pilot, and anyone killed should the aeroplane crash.
In a wind tunnel test the plane never leaves the ground. It's only to see how the wind will affect the plane. When your testing during real flight, your actually in the sky and really flying the plane.
Alan Pope has written: 'Low-speed wind tunnel testing' -- subject(s): Wind tunnels
Robert Frank Robinson has written: 'Introduction to wind tunnel testing'
Wing shapes are tested in a wind tunnel to see how they will perform in flight.
R. L. Tobler has written: 'Materials for cryogenic wind tunnel testing' -- subject(s): Cryogenic wind tunnels
Wind tunnel tests for cars are conducted to evaluate aerodynamic performance, helping to reduce drag and improve fuel efficiency. These tests allow engineers to analyze airflow patterns around the vehicle, identify potential areas of turbulence, and optimize design elements for better stability and handling. Additionally, they help in assessing the impact of wind on vehicle noise and overall performance at various speeds. Ultimately, wind tunnel testing contributes to enhancing safety and performance while maximizing fuel economy.
A wind tunnel.
The wind tunnel was developed by the American engineer and inventor Frederick W. Lanchester in the early 1900s. He is credited with creating the first closed-circuit wind tunnel in 1907, which allowed for more controlled and accurate aerodynamic testing. Lanchester's work laid the foundation for modern aerodynamics and contributed significantly to the field of aviation and fluid dynamics.
Wind tunnel testing is generally very expensive and time consuming. In addition, if the object to be tested (i.e. a car, an airplane) is too big to fit in the tunnel itself, a very accurate scale model must be produced, and Reynold's numbers (a number describing the flow conditions over the object) must be accurately matched to the expected operating conditions. These models can be prohibitively expensive as well.
A subsonic wind tunnel is a wind tunnel that cannot take testing to Mach 1 (the speed of sound). There are a wide variety of wind tunnels, and they come in a broad range of sizes, too. They span models from ones that test motorcycle helmets to ones that test a whole small aircraft or aircraft model. A link is provided to the Wikipedia article on the wind tunnel, and you'll find that link below.