Why was the 747 designed with a hump?
Table of Contents
- 1 Why was the 747 designed with a hump?
- 2 How many different 747 variants are there?
- 3 Why is the 747 being phased out?
- 4 Are any Boeing 727 still flying?
- 5 Are there any 747-100 still flying?
- 6 How big is a 777 compared to a 747?
- 7 How many 747 crashed?
- 8 What are the origins of the Boeing 747?
- 9 Can You 3D-print a model of the Boeing 747SP?
- 10 Who modified the Boeing 747SP Sofia?
Why was the 747 designed with a hump?
The plane was designed for both passengers and cargo, so if passengers stopped flying it, the 747 was still useful. That’s where the iconic hump comes in. Engineers decided to turn the front of the plane into a giant door. The nose would open up, making it easy to load tall cargo.
How many different 747 variants are there?
| Boeing 747 | |
|---|---|
| Produced | 1968–present |
| Number built | 1,566 (incl. 2 undelivered Boeing testbeds) as of September 2021 |
| Variants | Boeing 747SP Boeing 747-400 Boeing 747-8 Boeing VC-25 Boeing E-4 |
| Developed into | Boeing YAL-1 Boeing Dreamlifter |
What are they replacing the 747 with?
Boeing quietly unveiled the $442 million airliner that will replace the 747 jumbo jet. The Boeing 777X was unveiled on March 13 in a private, employees-only event. The 777X is destined to serve as Boeing’s new flagship and replace the iconic 747 jumbo jet.
Why is the 747 being phased out?
The end of the 747 has been a long time coming. Demand for the four-engine jet has decreased steadily in recent years as airlines have sought smaller, nimbler, more fuel-efficient twin-engine planes instead, such as the Airbus A330 and A350, and the Boeing 777 and 787.
Are any Boeing 727 still flying?
The 727 was used for many domestic flights and on some international flights within its range. Its last commercial passenger flight was in January 2019. It was succeeded by the 757-200 and larger variants of the 737.
Are 747’s still in service?
Boeing’s most iconic aircraft — the 747 — is celebrating 51 years of passenger service in January. Most of the world’s airlines, however, are retiring their 747s in favor of new, fuel-efficient jets. The final models will be delivered to cargo giant Atlas Air in 2022, marking the end of the program.
Are there any 747-100 still flying?
For instance, the Iranian Air Force still operates a 50.8-year-old Boeing 747-100, which is considered the oldest jumbo jet used for non-commercial passenger operations. The 48.1 years-old jumbo jet, registered as 73-1676, has been flying governmental flights since July 1973, according to Planespotters.net.
How big is a 777 compared to a 747?
Boeing 747 vs 777: Specs
| Specifications | 747-400 | 777-300 |
|---|---|---|
| Length | 231 ft 10 in (70.66 m) | 242 ft 4 in (73.86 m) |
| Wingspan | 211 ft 5 in (64.4 m) | 212 ft 7 in (64.80 m) |
| Height | 63 ft 8 in (19.4 m) | 60 ft 8 in (18.5 m) |
| Seats | 416 | 365 |
Will 747 make a comeback?
Alongside this, a handful of older Boeing 747-400s are also set to return to the skies, with a Lufthansa spokesperson telling Simple Flying, “We will also be bringing our eight 747-400s back into service for the next few years; staring in 2023, they will be successively replaced by the 777s once they are delivered.”
How many 747 crashed?
Of the 61 Boeing 747 aircraft losses, 32 resulted in no loss of life; in one, a hostage was murdered; and in one, a terrorist died. Some of the aircraft that were declared damaged beyond economical repair were older 747s that sustained relatively minor damage.
What are the origins of the Boeing 747?
The origins of the 747 go back to the 1960s. Pan American World Airways (Pan Am) saw the economic potential and asked Boeing to design an aircraft around 2.5 times the size of the Boeing 707. Boeing and Pan Am had already had great success with the 707 and wanted to take this further with a higher capacity, twin-aisle aircraft.
Why did the Boeing 747 have a smaller upper deck?
The smaller upper deck also allowed for a wider main fuselage for the aircraft, improving its cargo capacity. This, of course, has gone on to be a big success for the 747. Such a large aircraft needed a new high-bypass turbofan engine design too. This would deliver higher power but with lower fuel consumption.
Can You 3D-print a model of the Boeing 747SP?
With the help of the staff of the NASA Ames SpaceShop Rapid Prototyping Facility, the SOFIA mission team created an eight-piece, 3D-printable model of the modified 747SP aircraft, its telescope and cabin.
Who modified the Boeing 747SP Sofia?
The Boeing 747SP that is SOFIA underwent extensive modifications by L-3 Integrated Systems in Waco, Texas, from 1998 to 2007. L-3 Integrated Systems was responsible for the aircraft’s modifications including design engineering, airframe structual modifications, telescope design integration, and flight test activities.