jockeys jockeying for lesser wing sweep in tejas ,have gone quiet for a while, Wonder what?
t seems F-16 has just 35 degree wing sweep, Why did the russians got a horribly high 46 degree wing sweep for PAKFA? They haven't heard jockey's advice perhaps,
Even Americans failed to stick with jockey's preferred lower wing sweep, they stupidly increased wing sweep angle from 35 degree in F-16 to 42 degree in F-22.The Americans too are committing the stupid mistake again and again from the close to zero wing sweep angle of Mustang days , they are erroneously increasing wing sweeps with each passing decade!!!
Now they are dangerously close to error zone with 42 degree wing sweep for F-22!!!!
The french from 58 degree wing sweep for Mirage-2000 seems to have heeded jockey's advice and started to reduce wing sweep in rafale.
May be the drafter with which old ADA guys drew the picture of tejas wing was malfunctioning at that time. Or they could have used the same faulty mini drafter used by French while drawing Mirage-2000 wing form is my idea.
AFAIK higher wing sweep angle was primarily meant for keeping the air flow perpendicular to wing leading edge subsonic while the fighter is flying in super sonic speeds, to postpone the onset of super sonic shock waves , creating turbulent air flow, which results in highest possible drag,
Also it is the simplest way of optimally using maximum possible are enclosed with in supersonic shock wave, so that wing tip and leading edges dont interfere with the shock cone. Also this form of highly swept delta wing helps in maximum space for fuel increasing its range and fuel holding capacity.
Thats why traditionally deltas are praised for their supersonic handling capabilities, while they buffet at lower speeds.This bufetting is sought to be corrected by the use of strakes, LREX or compound or cranked delta with lesser swept angle at the wing root,
Thats why the retired greek air force chief praised Mirage-2000 with high wing sweep angle over the F-16 .The reason is this wing form gives the best possible lift to drag ratio which gives a very favorable ITR(Instantaneous turn rate) to evade missiles and get a first look ,first shot ability on F-16 when Mirage-2000 pilot is experienced.
Same is the case with F-16 Xl's superior perormance over plain F-16,
http://defenceforumindia.com/forum/indian-air-force/18521-ada-tejas-lca-iii-182.html
Tejas has ten percent more TWR and even higher wing area than Mirage-2000, So why people are complaining?
Or
is there any special jockey number and jockey laws of aerodynamics behind the absolute number on the wing sweep?
If people dont know shit about aerodynamics, They should keep shut up rather than reducing themselves laughing stock,
Fighter design is not fixated on a single item called wing sweep angle. it is a holistic sum of requirements raised by the ASR. And best possible design that can optimally deliver all the needs is chosen.
Fighter design is not like a laundry list that reads like 12 shirts and 10 pants,