Definitely a Hindutva site.
[1] https://sites.google.com/site/ancientbharat/aeronautics
[2] http://en.wikipedia.org/wiki/Vaim%C4%81nika_Sh%C4%81stra
And, your point is?
That site also has collections about works of legit ancient Indian mathematicians, Vedas etc. So, you are going to disregard them because they're Hindus?
If somebody mentions about these things, then they're said to be peddling this so called Hindu propaganda. Now, THAT'S a real propaganda.
Ambedkar was very diplomatic in his criticisms towards them. Osho was not so kind. See: http://www.osho.com/library/online-library-rigveda-tulsidas-...
You can also see that the site claims that Jyotish is astronomy but it actually means astrology.
Here is the description of Saturn in one of the texts "Parashara Hora Sastra" http://archive.org/stream/ParasharaHoraSastra/BrihatParashar...
29. [Saturn] has an emaciated and long physique, has tawny eyes, is windy in temperament, has big teeth, is indolent and lame and has coarse hair.
What is legit or scientific about it?
Nothing. And no one here is claiming that all parts of these texts are to be taken as absolute fact with empirical proof. Most of it, as you mention, is riddled with imaginary stories probably because scientific discovery was being carried out by religious philosophers of that time.
However, there are parts of these texts that are legitimately impressive, philosophically or scientifically - and a blanket denial of that would be just as unjust as the 'filth'.
I have provided references to show that the basic 4 vedas are tribal in nature and there is no basis to claim them as the origin of other scientific oriented texts. I am not denying all of the texts as bad.
>>>You can also see that the site claims that Jyotish is astronomy but it actually means astrology.
Where? They do mention it as "astrology".
>>>In reality, the scriptures are filled with filth like procedures of sacrificial, bestiality and orgy rituals, calls upon gods to slaughter their enemies (who have stolen their herds), etc.
>>>29. [Saturn] has an emaciated and long physique, has tawny eyes, is windy in temperament, has big teeth, is indolent and lame and has coarse hair.
What is legit or scientific about it?
Have you heard of mythology, euhemerism, and personification? Out of all those stuff on that site, you zeroed-in on sacrificial rituals, description of Saturn, and dismissed everything as "filth"? Then, what is your say on Ganit Shastra, Kaam Shastra, Khagol Shastra to name a few?
Based on that logic, all these below must be filth and their sole purpose is to brainwash people:
http://en.wikipedia.org/wiki/Christian_mythology
http://en.wikipedia.org/wiki/Norse_mythology
http://en.wikipedia.org/wiki/Greek_mythology
Astrology is different from astronomy in the present day, but not in the past.
Propaganda: http://en.m.wikipedia.org/wiki/Propaganda