Why A350 Airplanes Lack Window Shades Like the B787

The choice between traditional window shades and modern electric dimming shades in aircraft has long been a topic of interest for both passengers and airplane manufacturers alike. This article explores why the Boeing 787 (B787) and Airbus A350 differ in their shading options.

Electric Shading in Boeing 787

The Boeing 787 Dreamliner is unique among modern aircraft due to its advanced electric shading technology. Unlike the Airbus A350, the B787 does not need traditional mechanical shades because it can control the light transmission through the windows electronically. Each window is equipped with a sidewall button just below it. This button allows passengers and crew to control the electric dimming of the window itself.

Airbus' Decision Not to Install Electric Shading

While Airbus considered installing electronic dimming shades for the A350, it ultimately decided against this option. The reason? The electronic dimming shades could not block out all of the light as effectively as needed, leading to the decision not to install them. The removal of traditional mechanical shades is a notable aspect of the A350 design. Some airlines operating B787s have even provided passengers with plastic sheets to cover the windows if they desire full opacity. Additionally, there have been complaints about the windows getting uncomfortably hot during sunny flights.

Comparison with Other Models

The Boeing 737 Max and the Boeing 777X provide a different perspective on window shading. The 737 Max retains traditional shades, while the 777X offers electronic dimming as an optional feature. This diversity in choice highlights the ongoing evolution of aircraft design in response to passenger preferences and technological advancements.

Window Design Differences

The differences are further emphasized by the physical design of the aircraft. The Boeing 787 has larger, more proportionate windows compared to the A350. However, the giveaway is in the aircraft doors: the A350 features small round porthole-style windows on its doors, while the Dreamliner has tall, narrow windows with rounded edges at the top and bottom. This unique window design contributes to the A350's overall aesthetic and possibly its decision not to use electronic shades.

Flexibility in Lighting Control

Another interesting aspect of the 787's design is its ability to manage the lighting for the entire aircraft. The crew can adjust the glass settings for the whole aircraft whenever necessary, providing a uniform dimming experience across the cabin.

Electrochromic Glass

At the heart of the B787's electric shading system lies a technology called electrochromic glass. This glass can adjust its opacity based on electric currents, offering a seamless and precise control over the amount of light entering the cabin. This feature not only enhances passenger comfort but also aligns with the newer trends in aviation technology.

In conclusion, the architectural and design choices made by Airbus and Boeing in the development of the A350 and B787 have led to differing approaches towards window shading. Understanding the reasoning behind these decisions can provide valuable insights into both the practical and aesthetic considerations in modern aircraft design.