Sukhoi Su 30MKI

Holy Triad

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The Bangalore sonic boom might've been created by a su 30.



 

here2where

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The Bangalore sonic boom might've been created by a su 30.



Since people are not supposed to be hearing booms on routine tests , the pilot must have had an 'ouch' moment with bozz men after landing ...

A retired pilot told the newspaper, "There are parameters of how to do a supersonic test. If it is indeed from a plane, then it's a mistake. Pilots can go supersonic only after the aircraft has attained a height of more than 11 km. They are disallowed from doing so in populous areas even at those heights."

 

Neptune

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Since people are not supposed to be hearing booms on routine tests , the pilot must have had an 'ouch' moment with bozz men after landing ...

A retired pilot told the newspaper, "There are parameters of how to do a supersonic test. If it is indeed from a plane, then it's a mistake. Pilots can go supersonic only after the aircraft has attained a height of more than 11 km. They are disallowed from doing so in populous areas even at those heights."


Very accurate, most countries have the same guidelines in which supersonic flights are prohibited over populated areas. Where I live I do remember on several occasions F-15s were scrambled in which they created hysteria from sonic booms. In one instance a few years back F-15s from Oregon scrambled to intercept a stolen airliner over the Seattle area. On another instance an aircraft got too close to the president’s plane. I think these accidental sonic booms are very rare, there is usually a reason such as intercepting hostile aircraft, or unidentifiable aircraft (Oregon F-15s intercepted those too).
 

here2where

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...I think these accidental sonic booms are very rare, there is usually a reason ....
There was unusually heavy military air traffic over BLR yday right from the morning, many hours before the boom. Not from HAL airport side , but strangely over the southern part of the city ... just saying...
 

Illusive

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Fighter aircraft on test sortie caused Bengaluru’s big bang

Spokesman for the Ministry of Defence, Bengaluru, tweeted, “It was a routine IAF Test Flight involving a supersonic profile which took off from Bluru Airport and flew in the allotted airspace well outside City limits. The aircraft was of Aircraft Systems and Testing Establishment (ASTE) whose Test Pilots & Flight Test Engineers routinely test out all aeroplanes. The sonic boom was probably heard while the aircraft was decelerating from supersonic to subsonic speed between 36,000 and 40,000 feet altitude.

“The aircraft was far away from the city limits when this occurred. The sound of a sonic boom can be heard and felt by an observer even when the aircraft is flying as far away as 65 to 80 kilometres away from the person.”
 

Snowcat

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Fighter aircraft on test sortie caused Bengaluru’s big bang

Spokesman for the Ministry of Defence, Bengaluru, tweeted, “It was a routine IAF Test Flight involving a supersonic profile which took off from Bluru Airport and flew in the allotted airspace well outside City limits. The aircraft was of Aircraft Systems and Testing Establishment (ASTE) whose Test Pilots & Flight Test Engineers routinely test out all aeroplanes. The sonic boom was probably heard while the aircraft was decelerating from supersonic to subsonic speed between 36,000 and 40,000 feet altitude.

“The aircraft was far away from the city limits when this occurred. The sound of a sonic boom can be heard and felt by an observer even when the aircraft is flying as far away as 65 to 80 kilometres away from the person.”
65 to 80 km away, sounds like BS to me. I'd reckon they were probably doing some scramble runs to intercept some incoming bogeys. Especially when the borders tension are at a high, this doesn't look far fetched.
 

abhay rajput

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65 to 80 km away, sounds like BS to me. I'd reckon they were probably doing some scramble runs to intercept some incoming bogeys. Especially when the borders tension are at a high, this doesn't look far fetched.
The problem with your theory is that it happened over Bangalore. So why would iaf scramble jet from Bangalore to counter either Pakistani or Chinese jets.
 

Snowcat

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The problem with your theory is that it happened over Bangalore. So why would iaf scramble jet from Bangalore to counter either Pakistani or Chinese jets.
I meant scramble simulations. Ingressing bogeys. No point in conducting a special exercise on a remote location in an already tense situation.
 

Karthi

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Someone did a CFD analysis of Gripen wing on MKI.

Gripen wing on the Sukhoi Su-30 body model


1 Dimension of Gripen wing on the Sukhoi Su-30 body model .jpg



1 Dimension of Gripen wing on the Sukhoi Su-30 body model 2.jpg



Visualization of the canard and of the main wing vortex core flows and the pressure istributio...jpg


Visualization of the streamlines.jpg


Visualization of the streamlines.



From the study, it was found that the application of the Gripen wing on the
modified Sukhoi Su-30-like aircraft would affect the aerodynamic character of the fighter.

From the results of flow visualization analysis and aerodynamic force analysis using CFD, found that the application of the Gripen wing affected the formation of vortex nuclei and flow interactions that influenced the lift force coefficient, location of the vortex breakdown,and pressure distribution that occurred. At low attack angles (<40o), the best conditions occur in the standard configuration.

The Gripen wing results in a higher CL value.
From the research of modified Sukhoi Su-30-like aircraft with Gripen wing, it was found
that the slotted leading edge of the additional Gripen wing caused a strong vortex core and therefore additional pointy tip produced two vortex cores, namely ordinary inner rolled-up vortices in the inner wing leading edge and outer rolled-up wing leading edge of the slotted gap.

Rolled-up vortex cores due to slotted gaps in the inner rolled-up vortex cores began to coalesce to become one stronger vortex core, which dragged the inner vortex core in the wing leading edge. As a result, the CL of the modified Sukhoi Su-30-like aircraft with Gripen wing became higher.

Flow over the canard tend to curl out, as well as above the wing at the end of the leading edge tends to rolled-up and behind it tends to laminate curved out. As AoA increased, the vortex breakdown location approaching the leading edge of the wing.
 

Illusive

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Someone did a CFD analysis of Gripen wing on MKI.

Gripen wing on the Sukhoi Su-30 body model


View attachment 48781


View attachment 48782


View attachment 48783

View attachment 48784

Visualization of the streamlines.



From the study, it was found that the application of the Gripen wing on the
modified Sukhoi Su-30-like aircraft would affect the aerodynamic character of the fighter.

From the results of flow visualization analysis and aerodynamic force analysis using CFD, found that the application of the Gripen wing affected the formation of vortex nuclei and flow interactions that influenced the lift force coefficient, location of the vortex breakdown,and pressure distribution that occurred. At low attack angles (<40o), the best conditions occur in the standard configuration.

The Gripen wing results in a higher CL value.
From the research of modified Sukhoi Su-30-like aircraft with Gripen wing, it was found
that the slotted leading edge of the additional Gripen wing caused a strong vortex core and therefore additional pointy tip produced two vortex cores, namely ordinary inner rolled-up vortices in the inner wing leading edge and outer rolled-up wing leading edge of the slotted gap.

Rolled-up vortex cores due to slotted gaps in the inner rolled-up vortex cores began to coalesce to become one stronger vortex core, which dragged the inner vortex core in the wing leading edge. As a result, the CL of the modified Sukhoi Su-30-like aircraft with Gripen wing became higher.

Flow over the canard tend to curl out, as well as above the wing at the end of the leading edge tends to rolled-up and behind it tends to laminate curved out. As AoA increased, the vortex breakdown location approaching the leading edge of the wing.
Talking about canards? Cause I don't see a delta wing here.
 

Karthi

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One question does sukhoi 30mki have maws? do all iaf planes have it??

Nope, Su 30 MKI don't have MAWS , DARE developed one but its not approved to fit cis of aerodynamic issues and Russian objections
 

airtel

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One question does sukhoi 30mki have maws? do all iaf planes have it??
Nope, Su 30 MKI don't have MAWS , DARE developed one but its not approved to fit cis of aerodynamic issues and Russian objections

Only few MKIs have duel color MAWS (develop by DARE with the help of Israel )
, 6 MAWS are required on a aircrafts for proper protection .
But Indian MKIs have only 4 maws installed on them ( because it was affecting aerodynamics and reduced performance of MKI ) .
Also Russians objected this modification.
 

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