Papers are judged primarily for their value as new contributions to existing knowledge of mobility engineering. Colwell, who funded this award, served SAE in many capacities for nearly 50 years, including a term as President in 1941.
The medal was named in honor of ArchT. Colwell, its first recipient and 1941 SAE President. Dr. Colwell symbolized the dedication and devotion of SAE members who work to further the objectives of SAE’s technical standards.
The medal was named in honor of ArchT. Colwell, its first recipient and 1941 SAE President. Dr. Colwell symbolized the dedication and devotion of SAE members who work to further the objectives of SAE’s technical standards.
Man's desire to fly under his own power has been given stimulus and a defined goal in the form of the Kremer Competition. A group of students at Massachusetts Institute of Technology formed a team for the purpose of designing and constructing an aircraft for this competition. The result of this effort is an aircraft of biplane canard configuration. A two-person crew powers a pusher propeller. The structure of the flying surfaces is balsa wood. The fuselage is constructed of aluminum tubing. Polypropylene film covers the frameworks. The results of the test program to date have brought out several problem areas. These include the need to strengthen the canard spar, relocate the canard hinge point, provide for ground steering, and replace the rear wheel with a stronger version. Other problems have occurred in the areas of the propulsion system and spoiler control actuation.
Designed as a test bed for electric vehicle components, the M.I.T. electric car, Tech I, is adaptable to a number of different power source-control motor systems. This paper discusses the performance of the systems incorporated in the vehicle as of October 1968, and outlines plans for future upgrading of the battery, motor, and control systems, culminating in the evolution of the Tech II electric car.
Considerable progress is being made toward the development of a standardized agricultural PTO driveline whereby the latter would be part of the tractor and could readily be attached to any implement by means of a quick disconnect. However, in order to establish a standardized design for an agricultural PTO driveline which would be universally acceptable, it must be made to suit all application requirements. This paper analyzes the interrelationship between the design of the driveline and its proposed application. The basic design is discussed in terms of the universal joint and center member. Application considerations are discussed with regard to driveline geometry, load cycle, and maximum torque.
The state of the art for wheel arch liners technology today implies the use of three main product kinds. Materials used show different characteristics in terms of weight of finished parts, mechanical, physical and acoustical properties.
Tire noise reduction was evaluated with acoustically designed exterior wheel arch liners. The wheel liners were made with a fiber blend selected to meet acoustical requirements, process demands, and durability challenges.
Abstract The flow around and downstream of the front wheels of passenger cars is highly complex and characterized by flow structure interactions between the external flow, fluid exiting through the wheelhouse, flow from the engine bay and the underbody. In the present paper the near wall flow downstream of the front wheel house is analyzed, combining two traditional methods. A tuft visualization method is used to obtain the limiting streamline pattern and information about the near wall flow direction. Additionally, time resolved surface pressure measurements are used to study the pressure distribution and the standard deviation. The propagation of the occurring flow structures is investigated by cross correlations of the pressure signal and a spectral analysis provides the characteristic frequencies of the investigated flow.
The airflow around an idealized wheel has been modelled using Star-CD 3.1, a commercial CFD package, and measured in a wind tunnel fitted with a moving ground. Measurements were made of the static pressure along the centreline of the idealised wheel and of the vortex characteristics immediately behind the wheel. Flow characteristics have been shown to change significantly with the introduction of wheel rotation, wheel width, and exposure to the oncoming flow. The CFD model successfully predicted the main features of the pressure profile around the wheel using the RNG k-ε turbulence model with the QUICK higher-order differencing scheme and the log-law wall function. The size of the vortex pair immediately behind the wheel and the Cp profile along the centreline of the wheel were found to be dependant upon the width of the wheel and the exposure to the oncoming flow.