Airfix 1/72 Blackburn Buccaneer S.2C

[Jim R]

Thanks for your posts :thumb2:

does the kit show/have the tiny little vortex generators on the upper leading edges of the wings?

Simple answer Doug is no.

A bit more progress
Front section and rear sections joined to main body. Fit wasn't bad but a little filler needed.


Filled and primed to see if things are ok.


Made up the access ladder. Not perfect but it will be fine.


The folded wing parts are all cleaned up and sorted. Some parts will only be fitted after painting and decalling as the decals go under them.

[Waspie]

Thanks for your posts :thumb2:

Simple answer Doug is no.

A bit more progress
Front section and rear sections joined to main body. Fit wasn't bad but a little filler needed.
[ATTACH=CONFIG]n1226900[/ATTACH]

Filled and primed to see if things are ok.
[ATTACH=CONFIG]n1226902[/ATTACH]

Made up the access ladder. Not perfect but it will be fine.
[ATTACH=CONFIG]n1226901[/ATTACH]

The folded wing parts are all cleaned up and sorted. Some parts will only be fitted after painting and decalling as the decals go under them.
[ATTACH=CONFIG]n1226903[/ATTACH]

It does have vortex generators Jim.
Last pic, the left image. It shows the small little triangular ‘things’ along the upper leading edge!
They are the vortex generators. They control the boundary layer of air over the upper wing surface. Basically, the little triangles stop the air in contact with the wing from sliding away sideways and help improve lift!!!

[Jim R]

It does have vortex generators Jim.

Thank you Doug. I didn't know why they were there or what they were. One of the strengths of the forum is that there are so many knowledgeable people :thumb2:

[Waspie]

Thank you Doug. I didn't know why they were there or what they were. One of the strengths of the forum is that there are so many knowledgeable people :thumb2:

I don’t have a clue why they called them generators!! All they do is keep the air in line over the wing surface!!!

[Guest]

Basically, the little triangles stop the air in contact with the wing from sliding away sideways

I think you’re confusing them with wing fences here. A vortex generator makes the air behind turn into a spiral, thereby making it stick to the wing’s surface better.

A wing fence is a much longer structure:


(source)

This does prevent the air sliding sideways off the wing, which is dangerous because it can cause the wingtips to stall while the rest of the wing doesn’t.

I don’t have a clue why they called them generators!!

Because they generate vortices in the air flowing past them?







(source for these three images)

[Waspie]

I think you’re confusing them with wing fences here. A vortex generator makes the air behind turn into a spiral, thereby making it stick to the wing’s surface better.

A wing fence is a much longer structure:


(source)

This does prevent the air sliding sideways off the wing, which is dangerous because it can cause the wingtips to stall while the rest of the wing doesn’t.


Because they generate vortices in the air flowing past them? :smiling3:







(source for these three images)

Well the Bucc did have vortex generators, and it was used to control the boundary layer. I just blew the explanation. They would to a degree have the same effect as the wing fence but carry it out on a more subtle way. They would still direct the airflow over the wing as well as keeping the air close to the wing surface. It was some 55 years ago I last did fixed wing theory of flight!! Give a guy some slack!!!!!

[yak face]

Great progress jim , its looking mighty fine , cheers tony

[Miko]

[ATTACH=CONFIG]n1226900[/ATTACH]

Brilliant work going on here, mine has move a place or two up the 'to do' in the raspberry ripplification plan!

Give a guy some slack!!!!!

Psst!! don't mention the Buccaneer 'blown flaps to increase high energy air and prevent early onset boundary layer separation! or we could be here all over again!

Miko (aerodynamically efficient!)

[Guest]

It was some 55 years ago I last did fixed wing theory of flight!! Give a guy some slack!!!!!

You probably know a lot more about this than I do, then — I just know what I pick up by reading bits and pieces

[Waspie]

You probably know a lot more about this than I do, then — I just know what I pick up by reading bits and pieces :smiling3:

There was quite a thing with the Buccaneer regarding controlling the boundary layer of air over the wings. I remember being taught the the vortex generators were introduce to control the boundary layer. They even taped air from the engines to blow air over parts of the aircraft as well.
Problem I have is I was trained on fixed wing theory of flight, trained on fixed wing maintenance - then they sent to work on rotary wing with no theory or practical training on them. So all I have is memory of training from over 55 years ago.
I know the soviets were big on wing fences but from memory, can't think of a UK aircraft using that technology to control airflow.

[Guest]

I’m not sure, but I think wing fences are the earlier, simpler technology and vortex generators came in later when high-speed aerodynamics were better understood?

[Miko]

There was quite a thing with the Buccaneer regarding controlling the boundary layer of air over the wings. I remember being taught the the vortex generators were introduce to control the boundary layer. They even taped air from the engines to blow air over parts of the aircraft as well.
Problem I have is I was trained on fixed wing theory of flight, trained on fixed wing maintenance - then they sent to work on rotary wing with no theory or practical training on them. So all I have is memory of training from over 55 years ago.
I know the soviets were big on wing fences but from memory, can't think of a UK aircraft using that technology to control airflow.

Those clever bods at English Electric didn't bother with wing fences or vortex generators for the Lightning, they put a notch at two thirds span on the leading edge, very clever! Take a bow Ray Creasey!

Miko (not as streamlined as I used to be)

[Waspie]

Those clever bods at English Electric didn't bother with wing fences or vortex generators for the Lightning, they put a notch at two thirds span on the leading edge, very clever! Take a bow Ray Creasey!

Miko (not as streamlined as I used to be)

If I recall the EEL didn’t need fences or vortex generators as it was nearly all thrust!! That and a mere ½ degree angle of incidence kinda negated any need for boundary layer control!!!!

[colin m]

The build is looking nice Jim. And the level of technical chat is nothing less than impressive. I wish I was qualified to join in.

[Miko]

If I recall the EEL didn’t need fences or vortex generators as it was nearly all thrust!! That and a mere ½ degree angle of incidence kinda negated any need for boundary layer control!!!!

I'm not sure about that? I'm quoting Roland Beamont EE chief test pilot, I have quite a collection of his remarkable books.

However ogival wing design negates the need for all such devices with the work of Dietrich Küchemann and the largely uncredited contribution of Johanna Weber who anonymously quietly changed the world! Recommended read for sure

Miko (a list of uncredited women in science and engineering research would make an interesting thread in itself as well as a 'great' group build)