Homework / test English to Russian Tech/Engineering Aerospace / Aviation / Space

в описании летательного аппарата с ракетным двигателем, типа «летающее крыло»

Контекст: The fuselage consists of the nose section, pressurized cabin (Fig. 2) designed to accommodate one pilot and four passengers, and tail compartment. The longitudinal framing is made of spars that bear the main load and stringers that hold the skin. The transverse framing is made of load-bearing frames located in the wing attachment area, as well as row frames. The cutout areas are framed by beams.

не нашла cutout areas в словарях в применении к летательным аппаратам, соответственно, непонятны и beams

Заранее спасибо