kaveri's problem

IF YOU WANT TO KNOW WHATS THE PROBLEM WITH THE KAVERI ENGINE

Read on

If you do visit the DRDO website & try to find the products page then try finding Kaveri engine then read on

You will see mentioned that Kaveri is a flat rated engine (mentioned boastingly) & that they have successfully demonstrated the flat rating technology in test beds in Bangalore,

Let’s explain what Flat rating is

When an airplane rises in the atmosphere the air flow & ambient atmospheric pressures go through a significant change in and around the airplane, & also it has a telling on the airflow into the engine & its exhaust.

Now with such atmospheric variations the thrust of the engine also changes.

Hence somebody saw the reasoning that the thrust must be constant through out, so whenever there is a variance in the atmospheric factors the engine should compensate it by increasing or decreasing the RPM.

This increasing or decreasing of RPM is called Flat rating i.e. keeping the thrust flat through out.

Now to my best knowledge & extensive research I have not been able to find another Jet engine in the world that does that (there are some turboprop engines though)

By a little research & use of imagination (on part of you)

you will be able to deduce how much stress flat rating will have on the compressor blades of the engine.

Most of the Low bi-pass engines (fighter airplane engines) in the world are static thrust engines. (They don’t seek to vary their thrust output to compensate ambient pressure drop)

So then with flat rating in mind the whole Kaveri engine was designed.

NOW:-- THE FLAT RATING IDEA FLOPPED. THE COMPRESSER BLADES ARE NOT ABLE TO TAKE THE STRESS & THE ENGINE IS THROWING UP BLADES.(it did the very thing that it was designed to prevent ( - ) & ( + )DID NOT CANCEL BECAME EVEAN more ( - ) i.e brought more instability )

That’s why the high altitude test in Russia failed
.
How did I know about it?

Facts

(1) Use of flat rating technology in jet engine, especially what it seeks to do

(2)Knowledge about the ambient atmospheric pressures & flows

(3)A little piece of info that the engine is throwing up blades from a seemingly reliable public source.

(4) Failure of high altitude test

I invite you to think about it as well & draw up your own conclusions.

However I have a small suggestions to make, instead of redesigning the whole thing, this may be tried. It MIGHT HELP.

If the defense minister claims 93% thrust has been achieved. Then what I am about to say has a fair chance of working

There is a lot of publicly available information on Toroidal aerospike rocket motor design. The information must be investigated upon for the design of the kaveri engine

Tons of info is available on the net, some researchers share research data, and some offering help, to whomever wants. Even a lot of research videos are available on you tube

The information might be significantly helpful, to deal with variation in fluctuation of ambient atmospheric pressure & its effect on the internal components of the engine

Instead of forcing the engine to vary its RPM to deal with the changes in atmospheric forces let a static nozzle do the job.

Thank you