Colégio Cognos

Por que os aviões têm janelas redondas e não quadradas?

Quando olhamos para o interior de um avião, algo chama a atenção: todas as janelas são arredondadas, nunca quadradas. Esse detalhe não é apenas uma questão estética, mas sim uma decisão de engenharia crucial para a segurança das aeronaves.

Quando olhamos para o interior de um avião, algo chama a atenção: todas as janelas são arredondadas, nunca quadradas. Esse detalhe não é apenas uma questão estética, mas sim uma decisão de engenharia crucial para a segurança das aeronaves.

Nos anos 1950, quando os primeiros aviões comerciais a jato começaram a voar, algumas companhias optaram por janelas quadradas. O problema surgiu rapidamente: os cantos retos das janelas criavam pontos de concentração de pressão. Durante os voos em grandes altitudes, a diferença entre a pressão interna (pressurizada para conforto dos passageiros) e a externa (muito menor) fazia com que essas áreas se tornassem vulneráveis a rachaduras e, em alguns casos, levassem a acidentes fatais.

A solução foi simples e genial: janelas arredondadas. O formato circular ou oval distribui a pressão de maneira uniforme, sem pontos frágeis. Com isso, a estrutura da fuselagem fica muito mais resistente às variações de pressão durante as decolagens, cruzeiros e pousos.

Além da segurança, há também benefícios práticos. Janelas arredondadas sofrem menos desgaste com o tempo, evitam que trincas se espalhem rapidamente e contribuem para a longevidade da aeronave. É um pequeno detalhe que salva vidas e aumenta a confiabilidade dos voos.

Assim, o design das janelas não é fruto de acaso: é resultado de décadas de testes, erros e aprendizados que ajudaram a tornar a aviação mais segura para milhões de passageiros em todo o mundo.

Nota editorial

Este artigo faz parte do portal Cognos Space, um espaço de ideias, educação e reflexão, mantido pelo Colégio Cognos.

As opiniões aqui expressas não refletem necessariamente o posicionamento institucional do colégio, mas contribuem para o debate e formação crítica dos leitores.

Conheça o Colégio Cognos: www.colegiocognos.com.br

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