TEJAS Aircraft Aerodynamics Analysis - The Swedish Connection?
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- เผยแพร่เมื่อ 16 มิ.ย. 2024
- The TEJAS is an aircraft whose aerodynamics is not straightforward to be interpreted. In this video we try to shed some light on the choices made and to understand the consequences.
This video about the Tejas aerodyanmics was vocally requested by many Indian viewers but I hope it could be interesting for the general public. There is also a section interesting fro the Swedish viewers.
Enjoy!
#Tejas #Viggen #Delta
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Great style. 👌
You should seriously consider making a Part2 of this video on both Tejas Mark2 (Af & Navy) design evolution comparing it to the Mark1 on the design changes.
Again, your videos really, really need decent subtitles (no auto generate sub I mean)
delhidefencereview.com/2019/02/22/tracking-the-tejas-the-design-evolution-of-an-indian-fighter-part-i/
This might be helpful... Some really food Information inside.
cheers.
@@duki1303 not everyone needs subtitle...
Congratulations on reaching 11k subscribers! When I discovered your channel a little over a month ago you had 3.5k subscribers. You are doing a remarkable job my friend! 👍
simply put. even with all its flaws TEJAS is one hell of a remarkable achievement, there is 190+ countries in the world, only 5% have a credible capacity to build airplanes and even less have the actual capacity to build jet combat aircraft, it is India´s first obviously there is a learning curve, im sure that India will overcome its mistakes.
Best regards from Colombia, incredibly deep and informative video, keep the coming!
Fighter aircraft needs to be aerodynamically flawed it will give them agility
A little correction: India has built the Hal Marut previously.
@@000xgage1 SO WHAT 2ND ATTEMPT DONT MAKE SOME1 SO PERFECT
@@itsanewday5219 ah but the Marut was made in the 50s and 60s, and the Tejas has been in development for 30 years. That's a lot of time and experience for any decent engineering team, not to mention they have access to General Electric engines and other western/Russian resources. I'm sure it's a good aircraft. This isn't like baking a cake where you'd invest billions and decades into something that isn't 'perfect' for the job. 😂
Also, I believe India also assembled Hal Ajeet versions of the Gnat.
On the intakes, there were many errors in reporting :-).
1. The original intake was designed for the Kaveri. But it was revised for the F404 including work on the lip and the area for the cross-section. They decided to stick to the circular intakes to decrease skin drag and improve pressure recovery. The design optimization was done in consultation with GE.
2. The auxiliary air intake is not because of the choice of the engine but an attribute of the fixed geometry. All 4th generation aircraft are designed for intakes optimized for high subsonic to transonic region. The auxiliary intake is to take care of the off-design point which is low speed. The auxiliary doors are spring loaded and open to let is more air when the speed is low. This is true for Rafale, GRipen, F-18, Jaguar etc. EF uses a moving lip. In the case of EF though, the lip movement is active.
3. The Mk2 (or what is now called the MWF) won't have a shock cone. None of the new designs use a variable -geometry inlet to reduce weight, complexity and RCS. This is because the focus of aerial wars has shifted. Nobody cares about top speed as much. 1.6M-1.8 M is enough. They want reduced cross section. The RCS of Tejas is really small thanks to its small size, low number of control surfaces and large use of composites. It is cleared for 1.6M. It is capable of 1.8M.
4. On the Mk2 however they have made changes to the intake. What is obvious is that the intakes are canted. This for reducing wave drag and RCS. The other thing that is not obvious in the following. In the Mk1, the wing leading edge shielded the intakes at supersonic speed. On Mk2 they elongated the intakes for best area ruling. This means that the intake is ahead of the leading edge of the wing! They modified the splitter plate to create the shock. ACtually, the splitter plate that is shown in the display models is not up to date.
Indranil Roy you are very thorough brother. I am so happy to just read ur comment because it's full of good information. Do you write a blog or follow Tejas latest developments somewhere? I would love to learn more.
@@santoshsundar1186 Thank you for the kind words. I am a forum moderator at bharat-rakshak forum. I have studied Tejas from public sources for over 20 years. Have been fighting misinformation on this fighter for over a decade now. This video is objectively made . But MANY MANY reports and videos have been made on Tejas before with vested interest. India is multibillion dollar fighter aircraft market. It makes perfect sense to not let its indigenous aircraft industry grow. I am afraid IAF hasn't helped much either except for support from NFTC during 1990s-2010s. However, things have changed a lot. The current IAF chief is a Tejas TP, and a BIG supporter.
Here are a few articles I have written on the Tejas.
1. delhidefencereview.com/2019/02/22/tracking-the-tejas-the-design-evolution-of-an-indian-fighter-part-i/
2. delhidefencereview.com/2019/02/23/tracking-the-tejas-the-tejas-mk2-grows-a-pair-becomes-the-medium-weight-fighter/
3. delhidefencereview.com/2019/10/15/a-detailed-look-at-the-design-evolution-of-indias-naval-lca-mk1-fighter/
@@indranilroy1983 I am so glad I met you here. I am a fellow well wisher of Tejas. Ever since I saw it fly the first time in Bangalore, I have been a fan. Thank you so much for sharing the links. Jai Hind.
Hey bro, Thanks for the info. really appreciate it :)
bharat-rakshak forum bina padhe mai sohi nahi sakta.
I absolutely loved your description of the wing. That's almost spot on.
1. One thing you did miss out is the inboard section actually has a significantly rounded LE which accentuates the effect that you mentioned keep the vortices stable. This has two effects. a. It gives great stability at supersonic speeds in the presence of sideslip. b. It gives great stability at high AoA and low speed. More on that later.
2. Another aspect of the wing is the LE slats. Mk1 has 3 of them (Mk2 will have 2). These slats actually deflect variable with downward deflection increasing from root to wing tip. This allows the nullify the variable AoA along the LE for a high sweep delta at high AoA. The end result is that the aircraft can fly at 28 degrees AoA (cleared for 26 degrees in squadron service) at 110 knots. It's minimum radius turn is completed at 330 mtrs!
4. You are right. The wing is highly optimized with a conical camber. It is a very good wing and retained in its entirety for Mk2.
5. When Mk1 began, Indian designers had nothing to stand on. What they took on was stupendous and they want to keep it simple. Canards were dropped for that reason. Today, when they have very firm grounds to stand on (similar to European designers in the 1980s) adding a canard is an incremental change.
And what is 3rd Point? :) Btw, thanks for Great explanation.
Well written!!
@Ros K Unfortunately not. Just a keen observer.
@Ros K :D :D
Tahole dada ekta proshno korchi.. parle uttor ta deben, Avijit Iyer mitra ke recently sunchi prochondo criticise korche even eta bole je the platform is very old and outdated r even jf-17 er thekeo kharap...
Amar proshno duto:
1) baki joto available jets ache ae category te, tar tulona te Tejas better na kharap (if possible reason deben)?
2) Tejas kotota helpful hobe military r jonno ebong amader defence industry ke kotota help korbe?
Finally person with some sense unlike other who keep looking down on others people's work.
I'm a Mechanical engg student,
i learned many things from your lecture
Great Video! I have been watching the Indian Aircraft development for a long time now. I think every Country needs to be self reliant so they are not manipulated by other countries in the fields of Defense, Medical, energy, & mostly thier ability to process raw material for manufacturing. Your lecture here on the TEJAS Light Fighter, "IS", the best description on Form, Function, & Reality of TEJAS. Thank you for your time in Making this Video. I am now a more Educated on the TEJAS, along with a few of the Aircraft in the near Class, size, & design. Bob Jackson Papillion, Nebraska
USA should have kept and made improved version of F 20 tiger shark and A4 skyhawk . These air- crafts are still modern looking and clean designs ,easy to maintained as well, but US military wanted heavier twin engine jet fighters instead.
@@amuxpatch2798 what is modern looking aircraft ? Germany under hitler had designed and tested all kinds of aerofoils.
@@pravirchandragadkari88 F22 and F35 ( design and tested in 1990s) others had design in late 70s and early 80s.
@@amuxpatch2798 someone said f20 modern looking jet
I agree. Leaving a key sector in the hands of outsiders is a recipe for disaster if the relationship turns sour!!
Probably the best explanation regarding the wings available anywhere in the TH-cam. Loved it.
Bhai lagta hai youtube kafi kam dekhte ho
@@RaveSharrma then suggest some
43 million jet with so much compromise and a foreign engine and radar.... Hard lessons.... Just buy 100-150 f35 or su 57.... Golden bullet
@@munmunhazarika5247 Ah shit,here we go again...
Veerendra Pratap Singh is that San Andreas CJ dialoge
It is interesting to know that of all the 4th generation design Tejas has the highest static margin. Its mean time to double amplitude is less than 0.2 seconds. On the other hand. There are only 4 active surfaces for control (2 of which are overloaded as flaps)! So it was critical that the designers kept the vortices from moving too much. That is the reason of the double delta. All other benefits and disadvantages are of lower order of importance.
Interesting indeed. If I understand you correctly that basically pulls together all the arguments we used in the last few days. Thanks! Can you give a short explanation of the double amplitude oscillation term you use? I assume the value you quote indicates the time in which pitch oscillations die down if left "untreated" by control input (FBW or not)?
@@marcbrasse747 It is the opposite. Tejas is an unstable platform. So, if left "untreated", the oscillations in pitch will double in 0.2 seconds, become 32 times in a second. So in terms of maneuverability, this level of static instability coupled with the very low wing loading gives it *crazy* instantaneous turn rates.
@@indranilroy1983 Aha! Definitely instable then! :-)
@@marcbrasse747 As a rule of thumb learn the meaning of Second Order systems, Damped, Sub-Damped and Super-Damped and then extrapolate to the instable one, which is what we have. Been a veeery long time since I had to remember that so it's all very blurry in my memory.
Here it is, look at each case:
ocw.mit.edu/courses/mechanical-engineering/2-003-modeling-dynamics-and-control-i-spring-2005/readings/notesinstalment2.pdf
@@einarabelc5 Thanks for the tip!
Tejas just like the Arihant and other projects are the first step - no matter how many mistakes (which seem obvious to 3rd parties), it is a great leap forward for the developing. Its the same as a newbie getting their first project done. Its will take them from a newbie to a regular and that is the start of the journey to the top! So keep going! P.S.: Calm discussion! Keep it up!!
Absolutly ...and he compair with gripen which is saab third aircraft....so it's a good thing for Tejas and Indian engineers.who made it with very limited experience and resources...Tejas mk2 will out class this aganda...off gripen superiority
I respect this person for level of details he cover and explains it in so simple form that even naive people can easily understand. Please keep up the good work.
Enjoyed your video, well thought out presentation. I successfully completed 4 yrs of study in aerospace engineering so your video was very to the point and easy to understand. Thank you.
Great to hear!
William is the course very difficult ?I want to do it .
Mostly CFD and Composite alloy development is the topic of subject. Btw which cycle is the jet turbine based on? Is it the brayton cycle?
Yes sir, is it difficult? I want to know
Sir tell me about aerospace engineering plz
Thanks for a wonderful new perspective. Many of these points aren't discussed in other channels.
I was happy Tejas was not a copy of some western jet
There are lots of delta winged western planes, tejas is an inferior copy. Period.
@@faithfullyyourshappilyheat5689 if this is true then every Boeing and Airbus commercial aircraft is copy of one other because they have swept wing. And Every aircraft is a copy of one another because they have nose cone........... F16 is a copy of MiG 21 because they both have tailed delta-wing. JF17 is an actual copy of the f-16 except air intake. J 20 is a copy of Tejas because it both are delta-wing and Tejas comes 1st according to your theory.
@@s_km1493 hahahahaha you banged him
@@s_km1493 are you actually a idiot
j 20 is a copy of the f22
@@faithfullyyourshappilyheat5689 i know dude but these indian blind patriots ain't gonna see that
you are so right! No other channel comes close to the enormous wealth of information you offer.
Thats why this is non biased channel, some are for india or some are agai nst
That's some excellent video.. this is the quality we expect from this channel... bravo.. !!
A great channel to watch. This exactly is not my core domain of work, but I do often explore information on Fighter Aircraft out of curiosity. The information provided is indeed unique and is rare to find in public platforms. Thanks for sharing this info.
Love your attention to details! Would also love to know more about your opinions for further improvement in designs!
The future of air warfare is "beyond sight detection and elimination" so I actually like the idea of keeping the platforms small and fast (aka cheap) while loading them with most sophisticated electronics and smart bombs. This platform can later be upgraded with autopilot thus using them as cheap but lethal drones.
You are right about the stubby nature of Tejas not being optimized for supersonic drag. I used to have a huge problem with the underside of the aircraft: Where's the wing-fuselage blending? It turns out that they did study blending but that would increase the area at the worst place increasing wave drag, and hence was dropped. The Mk2 overcomes this as you said by elongating the fuselage by 1.5 mtrs, by reshaping the area just behind the cockpit, refinements to the engine bay and something that you did not capture in your video, elongation of the intake by over 1 mtr, and canting the intake.
@simba1 All indications are to the contrary. But I would like to know why you think so?
@@indranilroy1983 1. If mmrca 2.0 ensures continuous delivery of Rafale class fighters post delivery of 36 on order which can gradually replace mirage and jaguar
2. If the targetted production date of MWF is 25-26 then definitely it is going to be delayed till 30. Do we really want a 4++ generation in 2030? Remember we still don't have a deal for 1a forget about starting it's production
3. Budget constraint. Most likely hal ada would be asked to focus on fast tracking amca and naval twin engine aircraft (which currently has no direction)
4. Production capacity. Hal would need to churn out close to 1 sqdr of 1a every year. Which means the last fighter will come out somewhere in 26-27 or so. Along with that we have super Sukhoi upgrade, mmrca and ijt. And probably upgrading 1 to 1a.
5. And to be honest MWF seems to me like an aspirational thing of hal engineers. All the things that they could not do in the last 40 years because of the Tejas requirement constraint of the weight class, RCS etc, and the limitations observed because of said constraints (range and load), they wanted to design an aircraft with less such constraints. Also, I think they feel mmrca is doubting their abilities.
@@cdm1949 1. We have all the Mig 21s, Mig29s, Mirages, Jaguars to retire. A 42 squadron is roughly 850 aircrafts. Of these 300 are MKIs (which will start retiring from 2035). 120 odd are Mk1 variants and 80 odd (unconfirmed) are RAfales. In what form will the remaining 300 aircraft be?
2. First of all Mk1A production has started. Orders for long lead time items have been placed. An LSP is being modified. Two more SPs will be modified soon. Coming to 5th gen aircraft. What aspects of 5th gen aircrafts are we speaking avionics wise aircrafts coming in 2030 will be contemporary of that time. Stealth wise what part of our inventory will be used for first day "invasion"? There is a huge price to pay for stealthy airframes both aerodynamically and financially.
3. MWF design detailed design is almost ready. AMCA detailed deisgn is progressing. TEDBF, NAvy and ADA finally are seeing eye to eye.
4. Production capacity is a direct outcome of number of orders. It is not financially viable to set up a line for just 2 years. 5 years is a minimum. So , if you have 80 planes on order, you will see a maximum production rate of 16 per annum. Double the orders and you can set up twice the production rate. No Magic there.
5. MWF is not even a HAL project! The rest are opinions, so I will not try to change them.
@@indranilroy1983 Sir, Can you explain AMCA capabilities if it became a reality?
@@cdm1949 @Indranil Roy one of the main hurdles of tejas ever becoming a reality in indian army is the speculative revival of fgfa joint venture between russia and india.
At last someone with knowledge for the design and airodynamic. Beautiful explanation. Thanks sir for the Video.
Thank you..much appreciated.Just what I wanted to see..
I think it would be great if you also make a video on TEJAS Mk1A as it will cover most of Tejas problem such indigenous AESA radar , weapon ( indian , Israeli , russian and American) integration and all those stuff
By the way great video
Excellent video! Thank you so much for providing us with such fascinating information. So pleased to have found and subbed your most excellent channel. stay safe man. peace.
Tejas is just a beginning
Jai Hind 🇮🇳
Exactly..
Beginning from 1979
@@taxconsultant1076 this is what i gonna reply. seems like u already did. thanks god abhinandan varthaman alive today.
@Sumit Barik Wikipedia says
33 (including 16 prototypes as of March 2020).... Your IQ is less than mine 😂😂😂
@Sumit Barik if this is latest info mean then its awesome news. if u can please update in wikipedia. this information will help lots of people .
*I'm Tejas* My name means the brightest of all.
Toh hum kya kare 🙄
@@adityayelwande3423 bas Lavde isi wajah se india aage nahi ja raha
Cheers! :)
Or maybe I was the lead designer
Tejas mean gao muttar😂
Tejas features :-
CREW
One
MAIDEN FLIGHT
April 2007
DESIGNER
Aeronautical Development Agency
MANUFACTURER
Hindustan Aeronautics Limited (HAL)
OPERATORS
Indian Air Force and Indian Navy
INITIAL OPERATING CLEARANCE
January 2011
SERVICE ENTRY
2016
NUMBER BUILT
32
LENGTH
13.2m
HEIGHT
4.4m
WINGSPAN
8.2m
WING AREA
38.4m²
NUMBER OF HARDPOINTS
Eight
EMPTY WEIGHT
5,450kg
APPROXIMATE TAKE-OFF WEIGHT
9,530kg
EXTERNAL PAYLOAD
More than 4,000kg
MAXIMUM TAKE-OFF WEIGHT
13,500kg
PROTOTYPE AIRCRAFT
1 x GE F404-GE-F2J3 turbofan engine with afterburn
PRODUCTION AIRCRAFT
1 x GE F404-GE-IN20 turbofan engine, rated at 85kN
MAXIMUM SPEED
Mach 1.8 (2,205km/h)
MAXIMUM ALTITUDE
15,200m
MANOEUVRABILITY
+9g to -3.5g
RANGE
3,000km
SERVICE CEILING
16,500m
AIR-TO-AIR MISSILES
Python 5, Derby, Astra BVRAAM, Vympel R-77 and Vympel R-73
AIR-TO-SURFACE MISSILES
Kh-59ME TV guided stand-off missile, Kh-59MK laser-guided stand-off missile, anti-ship missile, Kh-35 and Kh-31
BOMBS
KAB-1500L laser-guided bombs, FAB-500T dumb bombs, OFAB-250-270 dumb bombs, OFAB-100-120 dumb bombs and RBK-500 cluster bombs
OTHERS
Drop tanks for ferry flight / extended range/loitering time and LITENING targeting pod
BURST FIRING RATE
50 rounds a second
MUZZLE VELOCITY
715m/sec
COCKPIT SEATS
Martin Baker (UK)
LIQUID CRYSTAL MFD
Bharath Electronics
HEAD-UP DISPLAY
Central Scientific Instruments Organisation (CSIO)
INS
Sagem SIGMA 95N ring
ENVIRONMENTAL CONTROL
Spectrum Infotech
ELECTRONIC WARFARE SUITE
Advanced Systems Integration and Evaluation Organisation (ASIEO)
MULTIMODE RADAR
Electronics Research and Development Establishment and HAL
bro maiden flight in 2001
great video,great explanation of different features. Regarding the intakes of TEJAS MK-2(& AMCA), it will be divertless supersonic intake(DSI) just like in f-35. ADA is also considering the new f-414EPE with wet thrust of 144KN for tejas mk-2 and amca. keep posting great videos.
@@death_parade yes
It may not be the best aircraft.. but it's just a beginning..
I really like this channel. One of the improvements is that the music was equalized with the host! It was really annoying to wait for the music, lower the volume, then turning it up again to hear the narration. Kudos!
Today, I have a much better understanding of shortcomings and advantages of Tejas. Hence the need to move to Mk2.
Great video!!!
for MK2 we need to wait another 20 years or more. at the time world fighter planes upgraded x20 times more than MK2. our education system make us to thinking about only buying techs not making.
@@agan116 😂😂 I don't think you live on planet Earth.
@@agan116 Mr. Dumb Dumb the first flight of MK2 is next year itself.
@@josephstalin9604
Are you talking about mk1A
A very detailed analysis and report about the HAL tejas MK2
Good job, I am glad you made a video about this aircraft
Thank you (:
Thank you for the video. Learned a lot of different things.
Well since this was our first modern fighter jet so it was moreover a technology development and understanding of a fighter rather than making a superior fighter..and I hope our engineers will definitely make a better one in the coming years.
You gotta start somewhere
Tejas 🇮🇳❤️
Another excellent analysis.
Really like your historical and technological narration.
Would really love if you could make videos on the JF17 and the J11.
Jf17 at start was good for money spent and bombing own pakistani civilians and continuing illegal occupation in Baluchistan and pkhtunistan by air bombing.
But due to tejas fear pakistan had to upgrade jf17 version3 which is costly now. Now for countering one tejas pakistan will need minimum 3 jf17 .
Thanks the subject was subtle and much needed as it has sense of academics. Analysis is easy for layman to acquire easy understanding of complex subject I.e aerodynamics. Appreciate it is obviously a unique vlog on TH-cam as claimed. Thanks am voting it, up up and up.
I feel like I have watched your very old videos in the past.. was not really a fan then..
Now, your content quality has improved dramatically. Looks like you are making good use of the books kept on that shelf behind you :)
Good luck . Subscribed.
Welcome back!
4:00 "Despite the same engine thrust and gripen being heavier, the gripen can supercruise while the tejas cannot"
This is outright misinformation. Gripen cannot supercruise. I think he's talking about the Gripen E which isnt operational yet, and has a more powerful engine.
"Gripen is a bit heavier"
Gripen E weighs 8tons, tejas mk1 weighs 6.5. Bit heavier, my foot.
He seems to be doing a review of the tejas, but all the time, he keeps praising the gripen. Strange.
Update:
Notice, when doing these comparisons, they overlook 1) Cost (both off-the-shelf and yearly maintenance) 2) Crashes and incidents. Gripen has had about a dozen, at least one fatal. Although it has been in the air longer, this is something that should be taken into account. But if this info is omitted, makes u wonder if this was intentional. Like, if tejas had several crashes and Gripen didnt hav any, vids like these wud talk nonstop about safety factors (like a tail wagging the dog, highlight those factors that the competion doesnt have). But this is just one way of telling if it's propaganda or not.
🤣🤣 I dint realise that later ur comment is true!
Thanks for a very persuasive explanation of the trade-offs involved in designing Fighter aircraft.Which is better - lower cost or improved transonic speed performance? Ultimately the Chief Designer has to take a call.
Loved you videos. Please keep them coming
Excellent and understandable description.
That set of nose-wheel doors could use some simplification. In most aircraft you can see one or two doors. Three in most extreme cases. The Tejas has four.
Tejaa mk2 is coming and it will be best in it category
Detailed info. I recently developed enthusiasm and was looking for delta wing.
What we know from the public info is that ADA wanted to design it with canards, they have done the simulations but IAF wanted it to be simple as it was the first FBW aircraft with no prior experience. So canards were dropped.. that's the reason canards resurfaced on MK2 they have the design ready...and are now more confident with control laws.
Tejas has a faulty inlet design.... Diminish power in hi altitude.... Tejas is rated at 1.6 mach while grippen can go 1.8 mach using the same general electric engine
@@jai9983 43 million jet with so much compromise.... And with a foreign engine and radar..... Just buy F35 or su 57 .... Plz don't go for AMCA... White elephant
@@jai9983 bro what resent is.... India spent 15 years in developing INSAS and after 10-15 years of bad performance, india is buying AK 203 in lalks...... Even nepali army only country bought INSAs rejected the rifle..... I see same future for AMCA...... Sad but true
@@jai9983 I agree will the Navy success.... Cuz navy has inhouse naval design Beaurrae...... India lacks a over all vision......
Do think by 2030 .... AMCA would get ioc..... Stealth, supercruise, internal weapons bay, Radar absorbing materials,...... ??????
@Mark Prothro 🌶🌶🌶🌶
Most of the indian youtube experts are so defensive about their country. Who says that every country is "perfect" it's a fact that every nation has Pros & Cons. Anyway Thanks for the analysis Bro. ☺️
Yes we are defensive cause our defence industry has been targeted for decades by foreign countries who usually make a lot of money buy exporting defence equipement to India.
These companies with the help of middlemen/corrupt politicians/paid media/corrupt defense personnel try to sabotage Indian projects.
Our first jet, the HAL Marut was inducted in 1967 and performed well in the 1971 War. It was battle proven.
Yet the project was sabotaged by European companies and India bough Jaguar fighters instead of working on future models of the Marut.
Our Aerospace industry was lost that day.
Same vilification campaigns are very common against the Tejas too. So yes offcourse we want people to see the facts and reality rather than just the cons which are amplified.
U are right, just ignore them sir..... I know india as other nations has its own problems also.... No country os perfect and i ussually hear from both the sides so that i know pros from experts side and cons and lies from the critic, thats why i came here
@@rohitb3 make it private and see how much your nations war industry develop.
Great video as always! The discussion about the fuselage and intake design reminded me of the Hornet, which is also not that great at near supersonic and supersonic speeds. The intakes look similar too (at least, the legacy Hornet).
Very simple and nice presentation of a complex topic .
Very nice video. Lot of good information. I am a huge fan of Tejas and used to laugh at all the funny interpretations/assumptions made in some of the defence blogs.. Now ur video will be used as a source to clear some myths. 😀
Next gen tejas with a more powerfull 414 engine and canards and you got a cheaper gripen made in Índia...
Ge414 based Tejas mk2 will be as potent and lethal as rafaleF4 . GripenE won't be able to spot tejas in bvr and will be shot down by Tejasmk2's indigenous cats members and astramk3 as soon as it takes off from its base.
Tejas lca or mca no more a just a fighter jet but a plateform to operate multiple cat members in any future war.
You people don't know how jealous the world is due to India's investments in domestic India made weapons,
Since we were their biggest buyers they don't want us to develop own weapons,
Biggest fear is not loss of biggest buyer . But once india starts making weapons india will be net exporter of weapons and current exporters may become net importer of weapons.
@Mark Prothro who said 70% are imported line replaceable units in LCA Tejas ? You are referring proto and limited series production unit LCA tejas which were for testing and weapon trials . That is very old story. Today it is less than 50% which will further reduce below 40% much lower than gripen. Tejas will have indian standoff weapons and long range indian bvr astra mk1,2&3 missiles and indian wvr astra mk4 missile which we have currently integrated on our su30mki. Only russian american and French fighter jets will have higher indigenous component than LCA Tejas.
Except engine , nose cone and aur to air refueling probe everything will be indian on Tejas. Currently we are using Elta radars but they will be replaced by indian Aesa Uttam radar from 61st LCA Tejas inwards.
India being vast country having own nuclear labs , space labs is having much bigger pool of scientists and engineers than entire Europe. Till now we didn't focus on indigenous weapon systems but always had capabilities to do so .
Before Europeans can delveop their own hypersonic missiles india will have its own . Before europe will have their own laser weapons deployed in transport and fighter jets .
@Mark Prothro yes india is true democratic country and has robust open auditing system . And report you referred is correct and available in public domain.
But audit report is old and was conducted long back when tejas was in second half of development stage . Today's FOC tejas has much much higher indigenous content actually hm higher than what gripen and south Korean FA50 made with same ge404 could achieve till date.
@Ashish Bagade he is mixing value wise lru and number of lrus.
Sincenenfine alone costs aoorox 30% of total cost and rassee currently imported one the import content cost wise looks higher. But once we replace rlta2052 by uttam cost wise too import content reduce .
@propane butane 300 billion INR
Your explanations was good, thanks.
Barring few points all the things you described were spot on. Thanks for the analysis.
It would be interesting to make a video of the demo at the Singapore and UAE air shows. HAL did demonstrate the maneuverability and performance of the aircraft. It would be interesting to hear from you how the plane performs in real flight.
Great video and so informative
very informative as always:)
I love this channel, it is pure Engineering point-to-point view. Love it.
I hope you do a Aerodynamics analysis of the the Su-57. :)
Excellent video sir....
Thank you for the analysis!
It's so good to hear from a real expert after all those self proclaimed yt experts
Tejas mk1 is mostly use for searching ,recognition and intercept purpose..........Tejas mk2 is mainly use for offensive purpose......
Great video and channel, congratulations on a job well done. BTW, when you talk about supercruise by Gripen, isn't it with 414 engine? Tejas has 404 and will have 414 only on later versions,
Very insightful as always...
Quite amazingly detailed video.
Complimenti uno dei migliori canali che si tronano su TH-cam su aeronautica militare in assoluto
Thank you 👍🙏 once again you delivered a succinct and comprehensive view of this aircraft.👍👍👍
I would ONLY compare this jet with the F16XL a cranked arrow jet...one day you can enlighten us🤔🤔
Excellent video, hopefully you can share your insights on other light fighters like KAI FA-50 or Boeing T-7 Red Hawk.
Yes fa 50 too made with american ge404 engine and designed by american team. We all should know more about fa 50
Thanks! Very informative and clear to understand👍
Its 4:40 in the morning and I should be in bed but this popped up. Such a balanced look at the Tejas, a relief from the crap I see elsewhere. And lots of observations and points that I never realized I saw.
BTW I must admit that your videos have come a long way. That first AMRAAM video I saw on r/hoggit was not quite up to my standards but when I saw the video on why the Europeans use canard-delta and others don't, it was then I subbed. The videos have climbed in production and information quality in the intervening time and its very apparent. The best on this area of discussion on TH-cam thus far to me.
Detailed and Informative and yet explained in such a way that a simpleton like myself could understand it. Great work as always man.
Lol....m here at 4:33...and yes, the content is excellent !!
I even can't sleep after this.....!!
Subscribed!
Tejas series is the most watched video on your channel.Keep it up friend.Bcoz there's lots of Indian viewers.
Fantastic aviation video ❤️...Thank you
A day will come when you fly your own fighter plane to fight against the fighter plane of your girlfriend's father
A few remarks:
- To me the Tejas seems nearer to the Saab Draken then the Viggen. If the cranked delta is similar to that of a Saab at all this is probably more true since the Draken has no canards.
- Another example would be the Avro Vulcan which has a kink similar to that of the Tejas in the later versions.
- In all these designs the aerodynamic centre and centre of gravity are brought forward in the inner wing and thus also overall. The Draken however has a more sharply swept inboard section where the Tejas, Vulcan and Viggen have lesser swept inboard then outboard sections. In that respect the Draken is probably closer to the crescent wing concept of the Handly Page Victor.
- In all cases the overall aspect ratio is improved by the lengthening of the average chord.
- Pure vortex control could just as easily be fixed with an oldfashioned doogtooth.
- The wing profiling might be nearer to Concorde practice, negating typical Delta-wing slow speed problems with exact curvature shaping.
- The shape of the fuselage and overall layout seem to suggest a rather basic interpretation of the area rule. No wonder it is being refined.
- The flat, slanted fuselage sides might be a rather poor attempt to invoke a bit of stealth.
- The inlet design is quite near to that of the original F18 Hornet, which is no wonder since it used a very similar engine.
Good comment, thanks!
@@Millennium7HistoryTech Thank YOU for taking me seriously at all. :-). I did however make a few minor mistakes in my phrasing (for instance mixing up the Draken and Viggen myself at a certain point) which I already corrected. Thinking further about the subject in the meantime makes me wonder if the Tejas is actually inherently instable at all. Do you see any clear proof for that? Even if this has been fashion for so long it does not mean every design actually has to be based on this principle. A more traditional approach avoids certain risks. If inherent instability works it has big advantages but if it is not executed expertly it will have more disadavantages then advantages. So my gues actually is that this is a conventional design or at best a relaxed stability design along the paths I described with a few more recent "fashionable" additions like those slab fuselage sides.
@@marcbrasse747 it is inherently unstable...thats why it has quadruplex FBW.
@Donald Twitter Why wouldn't the advantage be the same as for the other jets with relaxed stability: reduction in trim drag and more net lift for a given AOA?
@@prashantsharmastunning Interesting! Can you please explain what aerodynamic aspects lead to this inherent instability? Quadruplex FBW is not proof in itself.
Excelente vídeo. Quando possível faça um vídeo , analisando a aerodinâmica do KIFIR C2 !
Very good and very informative vídeo, thanks a lot, Sir
I have a question regarding air intake for the engine. What are the differences and benefits of air intakes under the fuselage or at the side of it?
probably the best no BS video on the tejas there is
Very well researched, thanks !
I think in the beginning phases, the KISS design philosophy was followed rigorously, leading to less than ideal aesthetics and overengineering. With greater competence came the greater achievements and the Mk2 would be a serious contender to fulfill all IAF needs. Ofcourse, the development has been very slow overall but I think that problem isn't restricted to LCA.
Your talk here is pretty reflective to the truth. Well done !
Another great video... very informative!
Am I just seeing things, or does the Tejas look a lot like the F-16XL, but with the intakes of an F-20???
No relationship whatsoever
This is gold. You're a legend. Your content is amazing. I will be here watch all of them. Please don't rush to produce then. Take your time. You are great
Have you considered making an analysis of the KAI T-50 trainer and its 3 other variants?
Tejas is undoubtedly best in its class! & Will get better as we operationlise it!
What class is that?
@@SK-hn2lj light weight fighter
dude even pakistan's fj17 is better when compared to tejas rn.
@@unknownentity2112 in which way
@@unknownentity2112 tge radar, no. The missiles, no. The ground attack capablilies, no. Speed, no. It has more rcs, bad stealthing features, worse turning radius, bigger takeoff distance, lesser pylons, lesser weight carrying capacity, more expensive (than block 1 tejas. Block 1a is advanced and can be comparable to the f16), fly by wire, no. Composites, less, thrust 85kn compared to tejas's 89kn, worse thrust to weight ratio. If its lacking so many features, how is it better. The only advantage it has is the service ceiling and the stealthy dsi
Hey mate ...as long as u can prove points ...we are good to talk about weakness and the great points as well......u nailed it....the problem with Tejas is it was built without engine finalize... overall it came out good....nice baby steps...we will nail it soon.....ur topic is well covered...cheers mate
Great presentation as always! Could you make a similar aerodynamic analysis on the iranian qaher 313 "5th gen fighter"?
this man is the just mouthpiece of saab. 😄
A reason for such a cockpit design is that these mk1 versions of Tejas would probably be shifted to trainer and practice version when mk2 arrives. That's why they have protruding cockpits as most trainer jets do. It help rookie pilots to get better look.
Fabulous as always.
Thank you so much 😊
Excellent. In summary What would you recommend are the improvements that Tejas mk2 should try out ?
83 tejas for #Indian airforce ..... And we know INDIAN airforce is a pretty badass professional #Airforce...
123 actually. 40 ordered before and being delievered. and 83 more just signed ;)
Thank you for the video 😘
This guy uses the same pen I’m using from last 10 years. Pilot Hightechpoint V5
It May Have a French Connected Due to Mirage's Fighters Which India operate s
But LCA is💪🚀😁
Dassault provided the initial design consulting for the LCA.
French helped making tejas
Great work!
You give the most complete explanations on your shows. Can you please explain to what a Gen 5 fighter aircraft means?
A plane that is made for stealth.
Nice video on Tejas fighter jet👌 Thank you 🙏
Sir, if you make a detailed comparison video between Tejas & JF17 it will become most viewed video on your channel 😁
India Pak rivalry
When will you upload the Q&A episode?
Wonderful analysis.