Tejas Mk 2 With Kaveri Engine





We are reaching the goal of making our own Multirole fighter with Tejas Mk 2. At present it has been designed to be a single engine jet with General Electric F414-GE-INS6 turbofan engine. This engine has 58.5 kN (13,200 lbf) dry thrust and 98 kN thrust (22,000 lbf) with afterburner.


The present expected weight of Tejas Mk 2 is as follows:

1. Gross Weight: 11,300 kg

2. Max Take Off Weight: 17,500 kg.

That means payload capacity is 6,200 kg.

Now this General Electric F414 engine has a dry weight of 1,110 kg. Its thrust characteristics are sufficient for our expected Tejas Mk 2 aircraft.

But if we have a twin-engine version then the range and reliability of the aircraft can be increased along with its size. The present wing area is 44 sq.m.

Let us consider if we use our own Kaveri GTX-35VS engine. Its weight is 1,236 kg. With two engines total weight of engines will increase to 2,472 kg.

While total thrust will be 104 kN dry to 162 kN with afterburner.

This makes the max take off weight to 17,500 - 1,110 + 2,472 = 18,862. But this calculation is wrong as it does not take into account increased fuel and fuselage size requirement for the aircraft with 2 engines. It is likely to increase gross weight by 25% due to increased airframe size. So likely max take off weight is going to be: 23,237 kg.

This results in a pretty good thrust to weight ratio of 0.988*104/100.08*24500/23237 = 1.08.

Here Dassault Rafael has been taken as reference aircraft with Snecma M88 engine, similar to the Kaveri engine. The  M88 engine has 50.04 kN dry thrust and Rafael has max take off weight of 24,500 kg. The thrust to weight ratio is 0.988.


To summarize, Twin Engine Tejas Mk 2 can be made with our own engine GTX-35VS-Kaveri. As the reliability of this engine increases with research and development, the aircraft can take on more roles. To start with, it can play the role of a super-cruise patrol aircraft in peacetime.


The spin-off of this platform can also help us to make TEDBF fighter for our Navy as Tejas Mk 2 flight envelope increases with full operational clearance. This is similar to the ORCA fighter planned earlier. So Tejas Mk 2 can be a medium weight fighter with twin engines which can be the workhorse of Indian Air Force like F-15EX for US Air Force.

Tejas Mk 2




Comments

Post a Comment

Popular posts from this blog

TDS on Property Purchase

From 2013-14 financial year onwards, Income Tax department of India will be taking TDS at 1% of installments being paid by buyer to builder/seller. This is valid for all flats/houses being bought of total value more than 50 lakhs. So what is the procedure to go through this hassle? 1. Get your PAN [I assume you are buyer, as it is buyer's task to deduct TDS] 2. Get the seller details:     a.  PAN     b.  Name     c.  Address     d.  Phone.     e.  Email id 3. Get flat/house address details. 4. Type of property: Whether it Residential or not. 5. Total Sale consideration: This includes parking cost, VAT, service tax (under-construction property), khata charges and electricity back up charges. 6. Date of Sale Agreement[ /Booking if no agreement signed yet] 7. Total amount paid/credited [This is the installment amount] So after getting all the above details, what to do next? We have to file the tax challan online using form 26QB. And when? W ithin 7 days from the
Read more

A - 400 M Atlas : Silver bullet for Indian military's logistical problems

Image
Wars are won by logistics and India has a dire shortage of logistical aircraft/helicopters. At present, India's best logistical aircraft is C-17. But we have only 11 and rest are in need of replacement being at the end of life stage. On top of it, Boeing has stopped manufacturing more C-17s. This brings us to the conclusion, what next to satisfy India Army, Navy and Air Force logistical needs for air transport. C-17 capacity is 77 tons, while there is no other aircraft of similar capacity available today, There is A-400M with half the payload capacity but can carry diverse missions. e.g. Strategic/tactical lift due to its requirement of shorter runway length (1 km vs 2+ km). This can significantly enhance the fighting power of the military by providing them fast and reliable transport to and from battlefield. Present rotational time of 2+ years of battalions should be significantly reduced to 1+ years to reduce stress on soldiers.  And their operational requirements can be met quic
Read more

INDIAN MILITARY THEATER COMMANDS - FUTURE

Image
Jointness at the top is a need that is long overdue. But Chief of Defence Staff (CDS) is just the beginning. At present there are 19 total commands in Indian Defence Forces including the two tri-services commands as below: 1. Strategic forces  2. Andaman & Nicobar Rest of the India and military is handled by the Army, Air Force and Navy operating as separate entities and the operations are executed independent of each other, at least in peace time. Normally there are three broad situations in which the military operates: 1.  Peace  - One can at least dream about it. 2.  Constant warfare  - Small scale conflicts and skirmishes as in the present situation of 2020. 3.  Full scale war  - Law of averages making it more and more possible.   Indian history started with full scale war with Pakistan, followed by brief peace, more wars and now constant warfare situation with both China and Pakistan. This has made creating and optimizing the theater commands a necessity as logistics becomes d
Read more