What is a ramp on the top of the Su 30 fighter for

This is a speed brake, which has two main functions: one is that when the aircraft lands, it can be opened upwards to shorten the distance of the aircraft. Second, in air combat, it is used to reduce the flight speed and improve maneuverability, and some fighters have a speed brake under the trailing edge of the wing, and when landing, the wing area can be reduced, thereby reducing the lift, increasing the friction between the wheels and the ground, and then achieving the purpose of deceleration.

The speed brake plays an auxiliary deceleration role when landing, and the time for the nose to turn around can be reduced by opening the speed brake during air combat, for example, there is a fighter behind you, and you want to use infrared combat missiles, but only by aiming the nose at the enemy aircraft can you lock, at this time you have to turn the nose around quickly, open the speed brake, and the speed becomes smaller, so the time to change the nose to aim at the enemy aircraft is greatly reduced to gain time. Don't look at it small, but it's extremely practical!

Airbrake. The speed brake of the Su-30 is relatively large, in fact, J-5, J-6, F-14 and other aircraft are available.

The airbrake is generally used to slow down when landing, but it can also be opened to change the airflow and change the direction of the aircraft in aerobatics or aerial combat.

It is a speed brake, which is used to slow down when landing.

Sloping plates? The back is still on the abdomen

You can't tell

Nor can you be specific

You might be talking about airbrakes, or you might be talking about pelvic fins

As for the Su30 fighter and the "oblique" plate you said, I guess you should be talking about the pelvic fins under the flat tail on both sides of the engine

The pelvic fin has many functions, but the biggest one is to improve airflow

Deceleration not only increases air resistance, but also changes the direction of airflow, increasing the pressure on the ground from the tires.

Airbrake, which many airplanes bring.

Airbrake. It is only used when landing.

Airplane speed brakes. Increases the friction surface with the air, thus slowing down. There are two uses: 1. When it runs to a short time, it opens, which has the same function as the deceleration parachute at the tail of the J-10 when landing. 2. When maneuvering tactically in the air.

The speed brake is when the plane is landing or the plane is at high speed, and it is necessary to urgently slow down to do tactical maneuvers.

That thing is the air brake, also known as the drag plate, which is a controllable surface on an airplane that is used to increase drag to reduce flight speed.

Your picture should be su30, the airbrake can shorten the landing distance, in addition to the speedbrake, there is also a parachute, when the plane lands, it generally has to be opened.

Airbrakes, as the name suggests, are used to slow down when landing or fighting.

It's a speed brake, and it's not used during takeoff. It's for landing.

It's a speed brake.

It is used to slow down when landing.

Hello! On the back of the Su-30 is a large hydraulic brake, to supplement the answers of other friends above: the speed brake covers an area of about square meters, can be opened up 54 degrees, and is limited to the use of flight speeds below.

It is mainly used to increase the drag and maintain flight stability when the fighter flies at low speed. Due to the long glide distance of heavy fighters when landing, the conditions of front-line airfields in wartime are poor, and it is necessary to use a parachute and a speed brake together to stop at a relatively short distance. Fighters such as the Su-27 can often be seen opening their speed brakes when performing low-altitude and low-speed passes.

You can see the speed brake of the F-15 fighter in the group below the LYKXR, this group ** is very famous! The legendary "Eagle" of the Israeli Air Force! If you are interested, you can search for it.

The one on the back of the 30 is the airbrake. A diagonal plate on the back, hydraulically propped up, is located in the center line of the fuselage, between the wings.

The air brake, which is the speed brake upstairs, is like the brake of a car, except that it is used in the air, and after opening, it increases the wind area, increases the resistance, and slows down the aircraft.

Not a speed brake. F15 also has. It's an azimuth-oriented antenna (it looks like a board). It can be opened when flying in the sky. What airbrake? Go find out the next boss.

The legendary speed brake rises when landing to reduce the distance of the slide.

Airbrake. Of course, pilots also use it to salute ground crews or towers!

The speed brake is used with a parachute when landing to reduce the landing distance, and it is sometimes used when flying, and the angle of opening determines the size of the deceleration resistance.

There are actually 3 types of Su-30, and the difference between them is even greater than the difference with the Su-35.

The specific relationship is:

Su-27UB - Su-27PU - Su-30 - Su-30MKI

Su-27S - Su-27M - Su-35 - Su-35UB - Su-30MKK

Komsomolsk is a production plant for the Su-27 single-seater, while Irkutsk is a two-seater. Therefore, the Su-30 of Komsomolsk was developed from a single-seat air-controlled type (Su-27S) to a single-seat multi-purpose (Su-35), and then to a two-seat multi-purpose, and finally due to China's requirements, the Su-30MKK's ground attack capability was strengthened, and a certain amount of anti-air capability was abandoned. And Irkutsk has developed directly from a two-seat air supremacy (Su-30) to a two-seat multi-purpose (Su-30MKI).

The three Su-30s vary greatly from the inside out.

The Su-30 and Su-30MKI are in the same lineage, while the Su-35 and Su-30MKK are two brothers.

And the Su-35 has also gone through a long process of development, several ups and downs, and the current Su-35BM and the original Su-35 are also completely different.

Cockpit: All three Su-30s are two-seaters, only the Su-35 is single-seater (except for its trainer Su-35UB, but it rarely appears).

Canard wings: The Su-30MKI is a three-wing plane, the other two do not have canards, some prototypes of the Su-35 have canards, but the production version does not have canards.

Front wheels: Both the Su-30MKK and Su-35 have dual front wheels. The Su-30 and Su-30MKI are single front wheels.

Vertical tail: The top of the vertical tail of the Su-30MKK and Su-35 is flat, and the Su-30 and Su-30MKI are pointed and vertical tail (the vertical tail is cut sharp).

Air intake: The short wing antenna on the outside of the air intake tract has it, the Su-30MKK and Su-35 do not, the early Su-30MKI also has it, and the later one is not clear if there is one.

Airspeed tube: There are three types of airspeed tube in the nose of the Su-30, and the Su-35 does not. This was decided due to the need for the installation of phased array radars.

Look at the wings. The small 30 and the large 35 were originally designed for carrier-based aircraft.

Let's look at the three-dimensional dimensions of the Su-30 first:

Aircraft length (except airspeed tubes) meters.

Wingspan meters. The height of the machine is meters.

Let's look at the three-dimensional dimensions of the Su-35:

Captain: m. Wingspan meters.

The height of the machine is meters. In fact, if you don't really use a ruler to measure, you can't see the slight size difference between them just by looking at it with the naked eye!

So to distinguish between the Su-30 and the Su-35, you can't just look at the exterior dimensions (unless you're sharp-eyed!). The key points are the following:

1) The Su-30 is a tandem two-seater, but the Su-35 is a single-seater;

2) the Su-30 has a nose airspeed tube, but the Su-35 does not have it (the Su-35BM has canceled the nose airspeed tube from the 2nd prototype);

3) the Su-30 does not have a three-sided wing, but the Su-35 does;

4) The Su-30 is not a double nose wheel landing gear, but the Su-35 is.

5) The Su-30 has a short wing-like antenna on the outside of the air intake, but the Su-35 does not.

6) The Su-30 has a vertical tail tip lower reverse angle, but the Su-35 does not.

The end of the Su-30 wing, which is the Su-27 30 series combat grinding machine with the "adsorption ( L-005 self-defense electronic jamming pod, replaces the original wingtip missile hardpoint. Carry an electronic jamming pod to make up for the weakness of the Su-27 30 with insufficient active electronic jamming equipment in the aircraft.