EASY Flight/Aerospace questions

  • Thread starter wzzp144
  • Start date
In summary, the graph shows the altitude of different aircraft over the years, with an increase from 1900-1970 and a decrease from 1970 to the present. This is due to various factors such as the type of aircraft (some being reconnaissance planes) and limitations like FAA regulations.
  • #1
6
0
EASY Flight/Aerospace questions!

Here is a picture of my question.

http://tinypic.com/view.php?pic=158rvt&s=7

On the left is the Altitude (ft x 10^3) scale and on the bottom is Years. In the graph as different planes at different years.

Notice from 1900-1970 the altitude the the aircraft increase. Then from 1970s -present the altitude decreases. Why does it decreaase?

These are combat planes.
 
Physics news on Phys.org
  • #2


The altitude values are actually service ceilings

Not all of them are fighters. Some of them such as the U-2 were reconnaissance aircraft, and thus the service ceiling was incredibly high to escape any air attacks by fighters, etc...

Also, a high service ceiling is not something easily attained. It is a function of engine power, efficiency, fuel burn, and a host of other factors.

There are a lot of other reasons why service ceilings would decrease, FAA regulations for instance (such as requesting airspace at certain altitudes), there are not a lot of reasons why fighters need to go to such high altitudes. I could go on forever, so I shall stop here.
 

1. What is the difference between lift and thrust in flight?

Lift is the upward force that keeps an object, such as an airplane, in the air. It is generated by the wings as they push air downwards. Thrust, on the other hand, is the forward force that propels the object through the air. This is typically created by the engines on an airplane.

2. How does an airplane stay stable while in flight?

An airplane stays stable through a combination of its design, control surfaces, and the pilot's actions. The shape of the wings, as well as the placement of the center of gravity, help to maintain stability. Control surfaces, such as the rudder and elevators, allow the pilot to make adjustments to keep the airplane balanced.

3. What is the purpose of flaps on an airplane?

Flaps are movable surfaces on the wings of an airplane that can be extended or retracted. They are used to change the shape of the wing, which can increase lift and decrease the speed at which an airplane can fly. This is especially useful during takeoff and landing when the airplane needs more lift at lower speeds.

4. How does a jet engine work?

A jet engine works by taking in air through the front and compressing it. Fuel is then added and ignited, creating a high-pressure gas that is forced out of the back of the engine, creating thrust. This thrust is what propels the airplane forward.

5. What is the difference between a rocket and a jet?

A rocket and a jet both use the principle of thrust to move through the air, but they do so in different ways. A jet engine uses air from the atmosphere to create thrust, while a rocket carries its own fuel and oxidizer, allowing it to operate in the vacuum of space. Additionally, rockets are not able to vary their thrust, while jet engines can be controlled by the pilot.

Suggested for: EASY Flight/Aerospace questions

Replies
1
Views
608
Replies
9
Views
1K
Replies
3
Views
3K
Replies
15
Views
2K
Replies
2
Views
769
Replies
33
Views
3K
Replies
10
Views
928
Replies
10
Views
772
Back
Top