Why 747 has a hump?

Boeing decided to raise the cockpit above the nose cone, and — in order to maximize the planes aerodynamic efficiency — the hump was born. Later versions of the 747 would extend the hump further back on the plane, creating more room for premium cabin seats in the upper deck.

What is the hump on top of airplanes?

The bump on the top of some commercial airliners is, in fact, a radome. This blended word meshes together the two things that identify the lump – radar and dome. While it's a neat portmanteau, it doesn't fully explain the need for this addition to the aircraft fuselage.

Why do planes have a hump?

Because of aerodynamics, the cockpit level had to rise and slope back down to the main fuselage, giving us the iconic hump.

Why does the 747 have an upper deck?

The Boeing 747's iconic upper deck became part of its design when engineers considered how they could streamline the aircraft's cargo operations. Moving the cockpit upstairs allowed a cargo door to be incorporated into the aircraft's nose, meaning that operators could load freight into the plane more efficiently.

Why do planes do not fly over the Pacific?

Most commercial airlines, that operate between East Asia and the Americas, do not fly over the Pacific Ocean because of cost and safety concerns, including turbulent weather, which can be dangerous to fly over.

WHY does the JUMBO have a HUMP? Explained by CAPTAIN JOE

Why do pilots say Roger?

The International Civil Aviation Organization (ICAO) officially defines the word "roger" to mean "I have received all of your transmission." For example, a pilot would say "roger" in response to an advisory from Air Traffic Control.

Why don't we fly from Alaska to Russia?

The smaller of these granite islands is American. These islands can be used as a resting point during a crossing of the Bering Strait, however, being in the proximity of Russia's Big Diomede Island will reduce the chance of a successful crossing from Alaska to Russia.

Can a Boeing 747 fly on one engine?

Boeing 747 has some tricks up its sleeve. It can dump fuel to reduce its weight. And it is a surprisingly good glider. Chances of landing successfully with one engine running are pretty good, because it slows down the rate of descent significantly.

Can planes have two floors?

Most commercial aircraft have one passenger deck and one cargo deck for luggage and ULD containers, but only a few have two decks for passengers, typically above or below a third deck for cargo.

Can a 747 take off with 3 engines?

The 747 is certified to fly on just three engines, and there was no indication of any damage to the aircraft's other engines. Safety experts and aviation regulators still questioned the decision to operate such a long flight with one engine out.

What was 747 designed for?

The 747 was originally designed to ferry passengers for just a few years, as Boeing's SST was being finalized, before being converted into a cargo carrier. And it was that cargo purpose that led to the aircraft's defining exterior design element: her hump.

What is the hump on top of 737?

It is the antenna for the inflight wifi system. The Southwest aircraft has a Ku band antenna on the top, allowing it to access the internet through satellites.

Was the 747 designed to be a freighter?

Boeing's 747 was conceived as a multi-purpose aircraft, both as a passenger carrier and a cargo aircraft.

Why do 777 not have winglets?

Why does the 777 not have winglets? One reason that the 777 does not feature such wingtip extensions is the operational limits these would place on the aircraft. The 777-200LR and -300ER variants of the aircraft have a wingspan of 64.8 meters. This only just falls below the upper limit for the ICAO's aerodrome code E.

Can a Boeing 707 fly upside down?

The scene, a Hollywood masterpiece of special effects, has people asking can an airliner fly upside down. The answer is yes for a “little” bit! Unlike military fighters, commercial planes do not have the engine power for sustained inverted flight and rely on lift from the wings.

What is aircraft radome?

Radomes are large dome-shaped structures which protect the radars from the bad weather conditions but at the same time allow the electromagnetic signals to be received by the radar without any distortion or attenuation.

Can someone open an airplane door in flight?

While the news never fails to report these events, it seldom mentions the most important fact: you cannot –- repeat, cannot — open the doors or emergency hatches of an airplane in flight. You can't open them for the simple reason that cabin pressure won't allow it.

Is there a doctor on the plane?

One recent study found they're fairly good. A trained physician is aboard just about 11 of every 12 flights. The New England Journal of Medicine discovered that in-flight medical emergencies are rare to begin with.

What happens if you open the door on a plane?

The door opening would cause a rapid decompression that would depressurize the plane cabin in a matter of seconds, causing a strong suction pull. This strong suction pull would cause all loose objects to be sucked outside the plane, including people who aren't buckled in.

Can a 747 back up?

Direct answer to your question: No, the engines do not reverse. However, there is thrust reverse on most jetliners to help the deceleration by this deflected air.

Why does a 747 have 5 engines?

The extra engine adds drag to one side of the plane. Consequently, pilots have to adjust the power on the other side to compensate. The special cargo meant that the aircraft was heavier and required additional stops.

Why do planes not fly over Antarctica?

No, planes don't fly over Antarctica because it is too remote and ETOPS regulation requires that aircraft are within a certain distance of a diversion airport at all times in case there are engine problems. As there are no diversion airports in Antarctica, routes must stay closer to other continents.

Do planes fly over Everest?

Most scheduled airlines avoid taking fly routes over Mount Everest. Jet aircraft fly at an altitude from 35000 to 40000 feet; the height of Mt. Everest is inside the jet plane's cruising altitude. To ensure a safe distance above the Himalayas, the pilots are required to fly into the lower portion of the stratosphere.

Why can we not fly over the North Pole?

Things only get more challenging from there. The polar regions have special navigation concerns in the form of the magnetic fields which permeate them. These can make it difficult for planes to navigate because the polar areas interfere with magnetic navigational tools.