Chengdu J-20 5th Generation Aircraft News & Discussions

[Deino]

Great comparison of both the regular J-20 with WS-10C engines and the new J-20A with WS-15.

 

[Alter_Ego]

Great comparison of both the regular J-20 with WS-10C engines and the new J-20A with WS-15.

View attachment 66018

Aestethically the J-20A looks more well proportioned now due to the protruding hump behind the cockpit.

 

[Vi-va]

Aestethically the J-20A looks more well proportioned now due to the protruding hump behind the cockpit.

The protruding hump behind the cockpit reduces drag.

 

[Vi-va]

Great comparison of both the regular J-20 with WS-10C engines and the new J-20A with WS-15.

View attachment 66018

Does it mean the WS10C has higher dry power? The WS-10 above is using afterburner.

 

[TopGun786]

Does it mean the WS10C has higher dry power? The WS-10 above is using afterburner.

You mean "low dry power"?

 

[Vi-va]

You mean "low dry power"?

obviously ws-10c should have higher dry power compared with ws-10

 

[TopGun786]

obviously ws-10c should have higher dry power compared with ws-10

Got it.
I thought you were comparing it with WS-15

 

[PakAl]

Great comparison of both the regular J-20 with WS-10C engines and the new J-20A with WS-15.

View attachment 66018

Beautiful plane, can you point out any changes, it's possible the new J20A will be upgraded to 5.5 generation.

 

[Vi-va]

Got it.
I thought you were comparing it with WS-15

My bad. You are right.

@Deino Does it mean the WS15 has higher dry power? The WS10C above is using afterburner.

 

[Hendarto]

My bad. You are right.

@Deino Does it mean the WS15 has higher dry power? The WS10C above is using afterburner.

Not necessarily indicative of a lack of power. There are many reasons why jet fighters take off using after-burner

Jet fighters often use afterburners during takeoff to achieve the necessary thrust for rapid acceleration and lift-off, especially when operating from shorter runways or aircraft carriers. Here are a few key reasons why afterburners are used:

1. Increased Thrust: Afterburners inject additional fuel into the jet engine’s exhaust stream, igniting it to produce a significant boost in thrust. This extra power is crucial for quickly reaching the speeds needed for takeoff1.
2. Short Runways: On aircraft carriers or short runways, the available distance for takeoff is limited. The additional thrust from afterburners helps jets achieve the required speed in a shorter distance2.
3. Heavy Loads: Fighter jets often carry heavy payloads, including weapons and fuel. The extra thrust from afterburners helps lift these heavier loads off the ground more efficiently1.
4. Quick Response: In combat situations, the ability to take off quickly can be critical. Afterburners allow jets to accelerate rapidly, reducing the time needed to get airborne and into action2.

While afterburners provide a powerful thrust boost, they are also fuel-intensive and are typically used sparingly to conserve fuel for the mission ahead.

Is there a specific jet or scenario you’re curious about?