PHASE 2 DESIGN PROJECT

STATEMENT OF WORK

Each engineering design team, hereafter referred to as the design team, will submit a technical proposal for the design of a scale model of a garage-door opening system to the Department of Engineering at Baylor University, hereafter referred to as the owner. Upon approval of its proposed design, each engineering design team will construct, test, and evaluate its garage-door opening system. The design team shall then make a formal written report and a formal oral report on the garage-door opening system and its performance.

The design team will design the garage-door opening system to meet or exceed all of the criteria described below:

The owner will provide a solid aluminum rectangular garage door whose dimensions are 50 cm wide, 30 cm tall, and 0.635 cm thick.

The design team will design and construct a frame for the garage door that provides a vertical opening whose area is no less than 95% of the 50 cm by 30 cm area of the garage door by itself. The system will allow the closed door to completely close the opening in the frame. When open, the door must be in a horizontal position in such a way that neither the door nor any of the system obscures any of the 95% opening or its projection along a line perpendicular to the plane of the opening for a distance of one meter in each direction.

The door may have mass removed by operations such as drilling holes for screws. The door may be cut and reassembled to form a semi-flexible door unit. The door may have rollers, guides, etc. attached to it. Some of the these operations just identified will remove mass from the door, but the mass of the final assembled door unit must not be less than 95% of the original mass of the door provided by the owner.

Motive power for the system will include a dc motor and a set of six solar cells, all of which will be provided by the owner. No different or additional motors or solar cells may by used. Except for solar insolation, no source of energy external to the system may be used. The solar cells may be used as a source of energy that can be stored in devices provided by the design team; but, with the exception noted below, no other internal source of energy may be used beyond that stored from the solar cells. The exception to this requirement is that potential energy may be stored in devices such as compressed springs or initially stationary masses. Such energy will be used and restored by the system during a cycle of operation.

Motive power may be used only to open and close the door, and it may not be used to hold the door in either the open or the closed position.

The system’s opening of the door will be set in motion by operation of a single electrical switch, and the opening of the door will be stopped by the system without any human intervention.

Similarly, the system’s closing of the door will be set in motion by operation of a single electrical switch (it may be the same electrical switch as used to set the opening of the door in motion), and the closing of the door will be stopped by the system without any human intervention.

The system will be capable of completing the raising and lowering cycle three times in the absence of additional solar insolation.

The maximum time allowed for raising the door is 10 seconds. The maximum time allowed for lowering the door is 10 seconds.

The system will be readied for testing by the owner as follows:

All stored energy that has been provided by the solar cells will be dissipated.

The device will be located outdoors in sunlight for approximately two and one-half days prior to compliance testing. The device will be in the sunlight from 8:00 a.m. until 6:00 p.m. each of the first two days and will be oriented as follows: the projection onto the ground of the vector normal to the plane of the solar cells will be pointing due south. On the third day, the device will be placed as it was the first two days, but it will be in sunlight only from 8:00 a.m. until 2:00 p.m. when it will be brought inside for compliance testing.