How does a dragonfly create drag?

How does a dragonfly create drag?

Instead of trying to overcome drag, the dragonfly actually uses drag to help it stay aloft. The asymmetrical flapping of its wings causes the down stroke to create drag which supports the weight of the dragonfly.

What is drag lift and thrust?

Lift is the force that acts at a right angle to the direction of motion through the air. Lift is created by differences in air pressure. Thrust is the force that propels a flying machine in the direction of motion. Engines produce thrust. Drag is the force that acts opposite to the direction of motion.

How do thrust and lift help an airplane fly?

Lift works opposite of weight. Thrust works opposite of drag. When the forces are balanced, a plane flies in a level direction. The plane goes up if the forces of lift and thrust are more than gravity and drag.

Can an airplane fly without a propeller?

With neither propellers nor jets, the airplane gets its thrust by applying a strong electric field to the air. That general idea has been demonstrated at science fairs, but the new work shows it can power a free-flying airplane.

Can a plane fly with one wing?

No, an airplane cannot fly with only one wing. In order for a plane to stay stable in air, it has to maintain balance. With only one wing, the weight is shifted to one side of the plane. This makes it impossible to balance.

What happens if both engines fail on a plane over the Atlantic?

If all of an airplane’s engines fail simultaneously, the pilot will perform an emergency landing. As the airplane descends and decelerates, the pilot will begin to search for a safe area to perform an emergency landing. Ideally, the pilot will land on a nearby landing.

How long can a plane stay in the air without engines?

A passenger jet could glide for up to about 60 miles if it suffers a total engine failure at its cruising altitude. Here’s an example. A typical commercial aircraft has a lift to drag ratio of around 10:1. This means that for every 10 miles it travels forward it loses 1 mile in altitude.

Why do planes stop in mid air?

The only way this can happen is when the thrust from the engine exceeds the drag that pulls the plane back. This process creates a lift force that propels the plane forward and up.

Can a 4 engine plane fly with one engine?

Can a passenger jet fly with only one engine? Yes it can. A twin-engine aircraft can fly perfectly well on only one engine. In fact, it can even continue the take-off and then safely land with just one engine.

How long can a plane fly on one engine?

This means that the aircraft can fly routes that take it as far as 330 minutes (five and a half hours) of single-engine flying time from the nearest viable airport. Other twin-engine airliners, like the Boeing 777, are also certified for ETOPS 330.

Can an airplane stop in the air?

Techincally, there is only one way for the aircraft to remain hanging motionless in the air: if weight and lift cancel each other out perfectly, and at the same time thrust and drag cancel each other out too. But this is incredibly rare. To stay in the air and sustain its flight, an aircraft needs to be moving forward.

Can a 747 fly with only one engine?

Originally Answered: Can a 747 just fly with one engine? If the aircraft had very little fuel and payload, the remaining engine was inboard (engines #2 or 3) and it was low and in ground effect, then yes, I believe it could.

How far can a 787 fly on one engine?

To put it into actual time, a Boeing 787 Dreamliner is certified for ETOPS-330. This means that the plane can fly on routes that take it 330 minutes from the nearest suitable airport for landing. To put this in perspective, the 787 can fly for five and a half hours on one engine.

How long can a 777 fly on 1 engine?

five hours

Can the A380 fly on one engine?

A plane has three different possible forms of movement while in the air: ascending, descending, and level flight. An A380 has four engines, each of which provides around 356.81 kN (80,210 lbf) of thrust. However, this speed is impossible for a single-engine to provide.

Can a DC 3 fly on one engine?

The airplane was flying fine even on one engine so I reduced the power I was demanding from the left engine. It was then I remembered the DC-3 I had seen taking off earlier.

How far can a DC-3 fly?

about 1,600 miles

What is the most dangerous commercial airplane?

The Most Unsafe Airplanes in the World

1. Boeing 737 JT8D. One crash per: 507 500 flying hours.
2. IL-76. One crash per: 549 900 flying hours.
3. Tu-154. One crash per: 1 041 000 flying hours.
4. Airbus A310. One crash per: 1 067 700 flying hours.
5. McDonnell-Douglas DC-9.
6. Tu-134.
7. Boeing 727.
8. McDonnell-Douglas MD-80.