Vortex generators.

[Boet]

I am all for fitting Vortex Generator sets to the Bushbaby`s wings. I have spent a lot of my own time and money researching and testing various set-ups on the wings of the Bushbaby, and the Bushbaby Explorer. These things work. But a lot of silly buggers are constantly telling my clients that it is bullshit, dangerous and looks kak. These "experts" are robbing my clients from even better STOL performance, and added safety. Making an already safe aerie even safer. If I thought it was NOT safe enough, I would NOT have recomended it to anyone.
PROOF:
Both the Zenair Skyjeep AND the Savannah, are now available without the leading edge slats / leading edge flaps, and comes equipped with a set of VG`s. The STOL performance of both these airframes is still impressive, BUT the cruise speed has also gone up considerably. Removing the complicated to make leading edge slats, has also cut on build time, AND removed a lot of drag.
I have done a considerable amount of test flying with the BB`s equipped with VG sets, and did NOT find any of these "dangerous flying" characteristics that these so called "Experts" talk so much about. :D Maybe some just like the sound of their own voices.

[priester]

Superboet

Priester stem volkome met jou saam, enige ou wat beweer VG's werk nie weet nie waarvan hy praat nie. Ek het heelwat ondervinding met die VG's op my BB en dit werk verseker.

Maar ek moet ook noem dat ek nie met jou neuswiel BB saamstem nie, dit ontsier net die vliegtuig. Die BB vlieg baie beter en het baie minder drag as 'n stertwiel vliegtuig.

Vrede

[PMarshall]

Boet what sort of improvements have you expirianced and are there any disadvantages. Looks like a complicated patern how did you work all that out?

[Boet]

For starters, the stall speed comes down by 8-10 mph. There is no stall break, just a gentle "mush" at 700fpm down. Almost like a parachute. The slow-speed handling is better. Takeoff is shorter, etc.

Type VORTEX GENERATORS on your search engine, and read. Interesting stuff, really. :D

[Boet]

Priester, ja, ek is maar baie stupid ne? Ek moet alle BB`s wat ek bou, stertwielietjies aansit, dan sal ek BAIE werk he. Ek gee nie om hoe dit lyk nie, ek kan tog nie daar sien nie, solank dit werk worrie ek nie. :D

Het jou BB ok VG`s aan?? Sit slag foudie op?

[FAWGie]

Vortex Gens have been used on certified aircraft for some time to improve performance and they do lower the stall.....My C340 twin had them as a certified aftermarket fit and they effectively increased the max all up weight for the aircraft by 160lbs while reducing the stall spead.

On the Savannah they work exceptionally well and provide the same effect as what the leading edge slats did, but without the drag component, so the cruise performance is increased.

I have no doubt that they improve the bushbaby's performance in similar fashion.

[Massimo]

Read this....

www.stolspeed.com :D :D

[Massimo]

Boet what about CAA approval. Will the addition of vg's need to be approved or not and would it be a problem? Especially in terms on an insurance claim?

[Boet]

Massimo, thanx for the nice site. Just confirms wahat I already know. NO, I did not ask. I do not think any insurance Co will moan about anything that makes it SAFER. Will they??

[Massimo]

Boet i think with a BB its no problem but mainly with the Savannahs and Sky Jeeps by removing the leading edge slats you are making a major modification (even though this is an easy process).

Yes there seems to be no problems with the vg's but the manufactureres wont approve it so how will the CAA react?

[Boet]

The addition of VG`s to the BB only makes an already sweet hanling aerie, even better. Monty does`nt have a problem, in fact I have given him a set that he wants to test on his BB. :D

[grostek]

Hi Massimo,

CAA will probably want a test pilot report on the modified 701/Savannah.

Gunter Rostek