Boeing 707

The 707 is a famous jet plane.

It was built to fly very far. This plane helped start the Jet Age. It was very popular in the 1960s.

The plane has four engines. These engines help it fly fast. It can carry many people. Some versions carry up to 174 people.

Boeing made many 707s. They used them for people and cargo. They even used them for the military. It was a very important plane.

The Boeing 707 is a famous jet plane.

It was built to fly very long distances. This plane helped start the Jet Age. It was very popular in the 1960s.

Boeing made the 707 from a test plane. This test plane was called the 367-80. The first 707 flew on December 20, 1957. It has four engines. These engines are called turbojets. Later models used turbofans. A turbofan is an engine that uses less fuel.

The 707 has wings that sweep back at 35 degrees. These wings can cause a shaky movement. Pilots call this a Dutch roll. To fix this, Boeing added a yaw damper. This is a tool that helps keep the plane steady. They also added a taller tail fin. This helps the plane stay on its path.

Many people rode in the 707. It could carry 174 people in one class. Some models were made for cargo. Others were used by the military. Boeing made 865 of these planes. They also made 154 smaller planes called 720s.

The Boeing 707 is a famous long-range airliner from America.

It was the first jetliner made by Boeing Commercial Airplanes. This plane was very important because it helped start the Jet Age. It became a huge success for passenger travel. Many people used it for long trips across the ocean. It helped make Boeing a leading maker of airplanes.

This plane works using four engines hanging under its wings. These are called podded engines. The first models used Pratt & Whitney JT3C turbojet engines. Later models used better engines called turbofans. A turbofan is a type of engine that uses less fuel.

The wings on the 707 are swept back at 35 degrees. This shape helps the plane fly fast. The wings also hold the fuel for the trip.

Boeing built the 707 based on a test plane. This test plane was called the 367-80 or the "Dash 80."

The very first 707 flew on December 20, 1957. Pan Am began regular service on October 26, 1958. Boeing wanted a new name for their jet planes. They chose the 700-series to show they were different from old propeller planes. They picked 707 because it sounded better than 700.

There were many different versions of this airplane. The 707-120B could carry 174 people in one class.

The longer 707-320 series had larger wings and was longer. Some models were even made for cargo. These were called the 707-320C convertible models. In total, Boeing made 865 of the 707 planes. They also made 154 smaller planes called the 720.

The 707's design changed as engineers learned more. The swept wings could cause a shaky motion called a Dutch roll. This motion makes the plane roll and turn at the same time.

To fix this, Boeing added a yaw damper to keep the plane steady. They also added a taller tail fin to help. These changes made the plane much safer to fly. You can still see the 707's influence in modern planes like the 737 and 757.

The Boeing 707 is a landmark American long-range, narrow-body airliner. It was the first jetliner produced by Boeing Commercial Airplanes. While it was not the very first commercial jet in service, it was the first to become widespread. Because of its massive success, the 707 is often credited with beginning the Jet Age. This aircraft helped establish Boeing as a dominant manufacturer in the global aviation industry. Its design influence can still be seen in modern aircraft like the 737 and 757.

The 707 is a swept-wing quadjet, meaning it has four engines. These engines are podded, which means they hang in separate containers under the wings. The wings are swept back at an angle of 35 degrees. This specific shape helps the aircraft fly at high speeds. The wings also serve a vital purpose by acting as fuel tanks for long trips.

To help with stability, Boeing eventually added a taller tail fin and a ventral fin. They also installed a yaw damper, which is a system that helps prevent unstable flying motions. Early models also featured Krueger flaps along the leading edge of the wing. These flaps were added to prevent the plane from stalling during takeoff or landing.

Boeing developed many different versions of the 707 to meet different needs. The initial standard model was the 707-120, which used Pratt & Whitney JT3C turbojet engines. The 707-120B used the more efficient JT3D turbofan engine. A turbofan is an engine that uses less fuel while providing higher thrust.

For shorter trips, Boeing introduced the 720, which was a lighter, short-range variant. For long-distance travel, the 707-320 and 707-420 series were much longer. These models were stretched by 8 feet compared to the original -120. The 707-320C was a "convertible" model designed for both passengers and cargo. It featured a large fuselage door to make loading freight easier.

The history of the 707 began with the Boeing 367-80, also known as the "Dash 80." This prototype was a proof-of-concept for both military and civilian use. The project launched in 1952, and the Dash 80 first flew on July 15, 1954. During a test flight over Lake Washington, pilot Tex Johnston even performed a barrel roll in the prototype. The first production 707-120 took its maiden flight on December 20, 1957. Pan Am began regular service with the aircraft on October 26, 1958.

Boeing chose the 700-series numbering to distinguish these jets from their older propeller planes. They specifically chose the name "707" because marketing experts thought it sounded more appealing than "700." This new era of flight was made possible by the Pratt & Whitney JT3C engine. This engine provided much more power than previous generations of jet engines. This leap in power allowed engineers to design a much larger and safer aircraft.

One major challenge during development was a flying characteristic called "Dutch roll." This is an unstable motion where the plane rolls and yaws, or turns, at the same time. This instability was a result of the swept-wing design. In one accident, a trainee pilot's actions made this motion so violent that three engines were torn from the wings. To solve this, Boeing engineers improved the tail and the rudder. These modifications provided better directional stability to keep the plane steady.

The 707 had a massive impact on how many people could travel. The wider fuselage allowed for six-abreast economy seating. This design choice was made to compete with the Douglas DC-8. The 707-120B could carry 174 passengers in a single class. Other models, like the 707-320B, were powerful enough to fly nonstop from Europe to the United States West Coast. In total, Boeing produced 865 707s for various uses. This includes military versions like the E-3 Sentry and the C-137 Stratoliner.