Rubenerd Blog

Despite WordPress assigning this post as p1177, this is in fact the 757th post! Yes, it’s time for another one of our really hated loved Useless Rubenerd Blog milestones!

Given the fact I’m in the 700+ range of posts, there are some posts which have the same number as famous Boeing airliners. Being a huge fan of commercial aviation, I figured I’d create some small posts about these planes. I missed the boat on the 707/720 and 727 (no, I’m sorry the 717 was the MD-95!) but I did do posts on the 737 and 747.

757 in Geneva, by Alejandro Pérez

The 757 was first introduced by Boeing in 1983 to replace the aging 727 trijet for short to medium range flights. Its narrow body design had similar cross section dimensions to the 707/720, 727 and 737 and was able to service hot and high climates. Despite production ending in 2004, 1,019 of the 757’s built out of 1,050 are in active service, mostly in North America and Western Europe. The capacity bracket the 757-200 served has since been replaced by a stretched and extended range version of the 737, the 900ER. The -300 series will be replaced by the 787 Dreamliner.

A defining feature of the 757 was its common cockpit and avionics design with the 767, meaning a pilot trained to fly one could learn to fly the other in a very short amount of time. In relation to it’s size, the 757 also has a very high ground clearance, especially when it’s in the air (that was me trying to make a funny), perhaps after lessons learned from trying to fit wide turbofans onto a low ground clearance plane such as the 737.

From a purely engineering standpoint, and to use the very technical language that people in the Illuminati use to describe commercial aircraft, to me 757s always looked like pug dogs from the front. And the angle of the windows makes them look cross. Is that just me?

Despite WordPress assigning this post as p1166, this is in fact the 747th post! Yes, it’s time for another one of our really hated loved Useless Rubenerd Blog milestones!

Given the fact I’m in the 700+ range of posts, there are some posts which have the same number as famous Boeing airliners. Being a huge fan of commercial aviation, I figured I’d create some small posts about these planes. I missed the boat on the 707/720 and 727 (no, I’m sorry the 717 was the MD-95!) but I did do one on the Boeing 737.

The first things

The Boeing 747 is perhaps the most recognisable and well known commercial airliner (aside from the Concorde and the Spruce Goose!). It was the world’s first wide-bodied airliner and one of the earlist to use huge, high bypass turbofan engines which were much quieter and more fuel efficient than the slimmer but much more noisy and smoke producing turbojets of earlier planes.

Why the 747 has that "hump"

The placement of the cockpit on a deck above the primary seating area (on the "hump" as it were) was not done initially to allow for a second deck of passengers, but purely for helping with the transport of cargo.

Having the cockpit in a second level allowed the main nose area of the 747 to open up like a hinge: this meant large cargo containers could easily be loaded and offloaded. It also helped to protect the pilots from containers crushing them from behind if the plane went into free-fall or crashed. Ouch!

Future proofing for SSTs

The 747 was deliberately designed to be future proof for airlines that purchased them. At the time, Boeing theorised that most people would be flying in supersonic airliners from the 1970s onwards, so they designed the 747 with cargo friendly features so that passenger versions could easily be converted into freighters in the future. Therefore they could sell more planes to airlines with the assurance they’d still be useful when SSTs (super sonic transports, like Concorde) took over.

Of course, we all know that SSTs were a colossal flop, but at the time they seemed like the future.

Versions

The initial 747-100 (1970) was designed with a very small "hump" which was used as a passenger relaxation area and bar; according to Wikipedia Boeing simply didn’t know what to do with that small amount of space! The 747-200 (1971) replaced the lounge with regular passenger seating, and the 747SP (1976) (for special performance) was created with a shorter fuselage to increase range.

The 747-300 (1980) was the first of the next generation of 747s which had a SUD (stretched upper deck) as default which allowed for more seating on the top deck; it also had more efficient engines and a greater range. The 747-400 (1989) was radically redesigned with more advanced electronics, a glass cockpit (replacing mechanical dials with computer screens) and winglets to improve fuel efficiency and range.

The 747-8 is the intended successor expected to enter service in 2010 to compete with the Airbus A380. Given industry delays, we can expect it sometime in 2094.