Table of Contents
Why did the 727 have 3 engines?
Eastern Airlines wanted a third engine for its overwater flights to the Caribbean, since at that time twin-engine commercial flights were limited by regulations to routes with 60-minute maximum flying time to an airport (see ETOPS). Eventually, the three airlines agreed on a trijet design for the new aircraft.
How much does it cost to build a Boeing 727?
Taking the average of the two sources, a 727-200 (advanced) manufactured between 1978-1983 costs $6.4 million.
Are Boeing 727 still flying?
Readers of a certain vintage will well remember Boeing’s 727, a mainstay of many airlines in the 1970s and 1980s. Between 1962 and 1984, Boeing made 1,832 Boeing 727s. Now, nearly 40 years after production ended, only a handful of Boeing 727s remain in the air, and none are dedicated to scheduled passenger flights.
How fast does a Boeing 727 go?
Technical Specifications
| First flight | Feb. 9, 1963 |
|---|---|
| Top speed | 632 mph |
| Cruising speed | 570 mph |
| Range | 3,110 miles |
| Ceiling | 36,100 feet |
How many engines does a Boeing 727?
three engines
With a raked T-shaped tail and three engines, the 727 drew plenty of attention when it launched in 1962. The design also served a practical purpose, with the mid-size plane aimed at smaller cities where airports had smaller runways that couldn’t handle the larger 707 jet.
How far can a 727 Glide?
For example, a Boeing 727–200 has a glide ratio of 17:1, so if the plane is at 30,000 ft and both engines fail, it should be able to “glide” roughly 17 times 30,000 ft (or 97 miles) before they reach sea level.
What is the landing speed of a 727?
LANDING , 727 So That’s 20+107 That equals 127 Kts IAS ( It’s Pretty Close, Eh!)
How many seats does a Boeing 727 hold?
The 727’s fuselage has an outer diameter that allows six-abreast seating (three per side) and a single central access walkway when coach-class (18 inch width) seats are installed. The first Boeing 727 flew in 1963 and for over a decade it was the most produced commercial jet airliner in the world.
Where is the JT8D engine on a Boeing 727?
The third JT8D engine, which is located at the very rear of the fuselage (called engine 2), is supplied with air from an inlet at the front of the vertical fin through an S-shaped duct to the engine’s inlet. The 727 featured high-lift devices on its wing, thus being one of the first jets able to operate from relatively short runways.
Why did Boeing 727 have a built-in airstair?
The 727 was designed for smaller airports, so independence from ground facilities was an important requirement. This led to one of the 727’s most distinctive features: the built-in airstair that opens from the rear underbelly of the fuselage, which initially could be opened in flight.
What is the difference between a Boeing 727 and a stage 3?
The 727’s JT8D jet engines use older low-bypass turbofan technology, whereas Stage 3 aircraft use the more efficient and quieter high-bypass turbofan design. When the Stage 3 requirement was being proposed, Boeing engineers analyzed the possibility of incorporating quieter engines on the 727.
https://www.youtube.com/watch?v=BQT48VX-jxU