This Image Shows an Acrylic Bubble-Formed Side Window for a Helicopter

question 4

Multiple Choice

This image shows an acrylic bubble-formed side window for a helicopter. What is most likely to have formed this product?  

• A) free forming
• B) trapped-sheet contact-heat pressure forming
• C) mechanical forming
• D) pressure-bubble vacuum snap-back forming

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Definitions:

Orbits

The bony structures surrounding the eyes, providing protection and supporting the muscles that control eye movements.

Eyebrows

The strips of hair located above the eyes on the face, serving functions related to expression, facial recognition, and protection of the eyes.

Eyelids

The movable pieces of skin that cover and protect the eyes when closed and help to spread moisture (tears) over the surface of the eyes when they blink.

Eyelashes

The short, curved hairs growing on the edge of eyelids, serving to protect the eyes from debris and aid in moisture retention.