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Tejas grounded after single sortie
In the Tejas video in OP, the opening sequence gives away the poor inlet design of Tejas. This means it is unable to go into high Angle of Attack maneuvers when starting from slow speed.
Imagine first the aircraft moving at high speed. The very speed of the aircraft ensures abundant airflow. As the pilot pulls up into a high AoA maneuver, the airflow continues to provide the engine with enough thrust.
Now imagine the aircraft flying at low speed, then the pilot suddenly pulls up into high AoA and trys to increase thrust. Due to poor inlet geometry, the suction created by the engine blades cannot draw enough air into the inlet. The engine struggles, you can hear the high pitch in the video, and the aircraft seems to be flying through treacle as it fails to attain height or gain speed, until the pilot pulls back and allows the aircraft to go into a controlled stall from which he then recovers.
This shows both poor pilot training, but also poor design for dog fighting. If the pilot needs to worry about his horizontal speed when deciding to go into high AoA, he is out of the fight already.
Make no mistakes, the rules of aerodynamics apply to all aircraft. But good aircraft like the JF-17 Thunder manage the airflow in a wider range of speeds than the poorly designed Tejas. It is probably the reason why we don’t see Tejas performing a meaningful high alpha pass followed by muscle climb.
Where do see that jf17 is underpowered its looks more agile than Indian Tejas in this airshowtejas trust to weigh ration is apparently better. JFT looks a bit under powered
"TRUST to weigh ration" - just simple sarcasm.Where do see that jf17 is underpowered its looks more agile than Indian Tejas in this airshow
Thrust to weight ratio is near 1 for a clean configuration of jf17 almost same as Tejas"TRUST to weigh ration" - just simple sarcasm.
The Indian NSA's principal Mantra is: Fight Pak till the Last Afgan. So, these military gadgets are all details.....In the Tejas video in OP, the opening sequence gives away the poor inlet design of Tejas. This means it is unable to go into high Angle of Attack maneuvers when starting from slow speed.
Imagine first the aircraft moving at high speed. The very speed of the aircraft ensures abundant airflow. As the pilot pulls up into a high AoA maneuver, the airflow continues to provide the engine with enough thrust.
Now imagine the aircraft flying at low speed, then the pilot suddenly pulls up into high AoA and trys to increase thrust. Due to poor inlet geometry, the suction created by the engine blades cannot draw enough air into the inlet. The engine struggles, you can hear the high pitch in the video, and the aircraft seems to be flying through treacle as it fails to attain height or gain speed, until the pilot pulls back and allows the aircraft to go into a controlled stall from which he then recovers.
This shows both poor pilot training, but also poor design for dog fighting. If the pilot needs to worry about his horizontal speed when deciding to go into high AoA, he is out of the fight already.
Make no mistakes, the rules of aerodynamics apply to all aircraft. But good aircraft like the JF-17 Thunder manage the airflow in a wider range of speeds than the poorly designed Tejas. It is probably the reason why we don’t see Tejas performing a meaningful high alpha pass followed by muscle climb.
China offered WS-13 for JF-17 but Pakistan chose RD-93.This is why the JF-17 needs the WS-19 engine once it’s available, a 42-44% increase in thrust will let the plane perform to the full possibility of its flight envelope. The JF-17 won’t be underpowered then. It will have nearly the same amount of thrust as the PAF’s F-16s!
The JF-17 with its current engine is akin for the F-16/79 (both planes have similar empty weight and similar thrust), but with the WS-19 it will make the JF-17 equal on many levels with a standard F-16.
As of this year, it is accepted that the WS-19 engine is ready but it will be time until it goes into mass production. After meeting the demand for the J-35 project, sparing a few engines to develop a JF-17 model with this engine will take some time. So perhaps we will see a JF-17D by the end of the decade. If the plane needs to be redesigned to fit the engine, perhaps the plane will get more enhancements to maximize the use of the new engine; especially in EW but also in being able to do heavier strike role as well as ability to supercruise in the way the Gripen can supercruise with its F414 engine.
China Seeks Superalloys, Supply Chain Boost For Military Engines | Aviation Week Network
China's WS-10 and WS-15 turbofan engines are now in serial production following the finalization of material verifications.aviationweek.com
Rattibha
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Any indication how the JF-17 compares to the following specs from the F-16/79?:
Pakistan have invested heavily in the JF-17 program and introduced new variants from time to time. These jets are more likely to be used in defensive capacity in our case (less stress). This works for us because WE have larger medium-weight class jets to use in demanding situations.Why the hell is every one comparing jf17 n tejas in the first place.
tejas as things stand today is at best a experimental dud of which a few copies has been shoved down the throat of iaf, for the feel good factor by dodo.
While jf 17 has been in opp for 10 plus years n has seen active combat.....it has more then 150 types flying in diff parts of the world.
N with the latest variant of jf 17....its in a very different league
only u got it right"TRUST to weigh ration" - just simple sarcasm.
JF program was indeed a well planned and managed program. The approach adopted by PAF to go for incremental updates in a situation when no other option was available, worked very well.Pakistan have invested heavily in the JF-17 program and introduced new variants from time to time. These jets are more likely to be used in defensive capacity in our case (less stress). This works for us because WE have larger medium-weight class jets to use in demanding situations.
PAF has invested heavily in rd 93 n is very satisfied with the end product..... plus the cost to benefit ratio for switching to ws 13 at the moment is not much...so for the moment PAF does not feel the urge to switchChina offered WS-13 for JF-17 but Pakistan chose RD-93.
Thats bs is spread by indian sources n nothing wrong with the fc1 that Myanmar recieved .Myanmar is not satisfied with the product it has received for instance.