coloured contrails - red and blue and whatnot

n20090628--n20051028_160540.jpg

amazing Air Acrobats
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coloured smokes?
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How do they make the colorful contrails at Aerobatic Shows?

They spray something like diesel-oil into the host exhaust and add a dye!

aerobatics dye dispenser smoke trail colorizer

Dear Sir!,

Thank you for your enquiry through our Web Site regarding generation of Coloured Smokes in Aerobatic Aircraft.

I can confirm that our products are capable of providing coloured smoke with Model aircraft, on condition that the Jet Eflux temperature is adequate and the flow rate of smoking liquids to provide sufficiently dense a colour, however from general experience I also know that a number of Turbine engines run in R/C planes run at a dramatically lower temperatures full scale jet engines.

I attach an information sheet aimed at full scale users which I am sure you can adapt with consideration to the scale you are working in.

Also,
It is our experience with the few Remote Control Aerobatic teams that have sucessfully smoked colours, that the consumption of dyes is rather low, certainly below our new commercial limits.

Please consider that you also need a "smoke base" i.e. the white smoke component, first.
I suggest evaluation of Automotive Diesel, or Heating Oil, or a light Spindle Oil (contact your local Oil Companies)
As an alternative you should review the usage of "Bio-Diesel" i.e. the Methyl Ester of Rapeseed Oil.
Once you have a stable white smoke, then commence work on a coloured system.

I would propose that you seriously consider the purchase of the following dyes from our a company who repacks Rohm and Haas Dyes - Keystone Europe in the United Kingdom in 1 litre quantities:

Automate Red IKHF - Non- Hazardous for Transport
Automate Yellow HF - Non-Hazardous for Transport

If you make your evaluation on the Red or Yellow, (For which the freight cost will be very low due to non-hazardous for transport ratings ), then if succesful I then suggest you move onto the Blue, which due to being a slightly higher hazard product (Similar hazard to Diesel) then the most expensive product for transport goes only when you are sure it works

Automate Blue 8AHF - Marine Pollutant and Hazardous for Transport

If you make your evaluation on the Red or Yellow, (For which the freight cost will be very low due to non-hazardous for transport ratings )

If you wish to purchase drums of 100 Kilograms, please do not hesitate to contact us

Yours faithfully

IF, with your existing smoke pipe arrangement you find that the coloured smoke appears "thin" and in ground testing , you find a significant amount of the dye is beng "sprayed" onto the ground / behind the craft, then I suggest evaluating chaning the smoke pipe alignment, such that the pipe exit is 45 degrees from the jet eflux. the experiment with other angles - i.e 30 degrees though to 60 degrees. These angles have been found optimal in Military display teams.
All military teams utlise one compartment for each pre-mixed smoking liquid - i.e. the Red Arrows, PAF etc all have 3 tanks - 1 for the Red Premix, 1 for White and 1 for Blue Premix.

Crowd photo - acrobatique aerienne - kunstflug luftakrobatik schau - kondensstreifen
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You may also choose to review splitting the single pipe into two exits, in order to increase the dispersion of the smoking liquid into the jet eflux. (the red arrows use three, contrary to the popular belief that each pipe is for a single colour, this is incorrect, all three smoke liquids exit from all three pipes to maximise dispersion of the dye. But of course this is really a step to take only if you need to!

Temperatures of 500 C sound excellent for colour generation.

If you feel that you would wish to review purchase of 109 kilogram drums then please let us know

Many thanks

www.rohmhaas.com/markers
www.rohmhaas.com/road
www.primenes.com

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Additional notes for you

the main reasons I recommend Automate Red IKHF and / or Automate Yellow HF to you are as follows:-

VERY low hazard solvent. easy / cheap / simple to transport / Not too agressive toward plastics.

Automate Red BD90 is roughly the same price as Automate Red IKHF and stronger (approx ratio is 90/55), but it is in Xylene Solvent.
This is flammable - so transporting the liquid is more costly as much more paperwork is required. You need to be a little more careful in handling the dye (no sparks etc whilst the lid is open)
Xylene is also MUCH more aggressive in dissolving plastics than the Hydrotreated Napthenic Solvent in the Red IKHF and the Yellow HF

Hope that this additional information help you.

In terms of the ratio of Dye to Diesel, this can be varied.

perfect heart shaped contrail patrol of france - herzfoermig kondensstreifen skywriters contrail cloud paraffin smoke oil
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The Red Arrows utlise 1 part dye to 8 parts diesel during training
Then 1 part dye to 2 parts diesel toward the end of training
1 part dye to 1 part diesel for normal use
2 parts dye to 1 part diesel for special events
3 parts dye to 1 part diesel for extra special occasions

PAF
Variable from 3 parts dye to 2 parts diesel , up to 9 parts dye, 1 part diesel

coloured smokes aerobatic aircraft
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These teams obviously use custom manufactured variants of the dyes we recommend to yourself, but the physical active colourants are the same.

thanks

Warren Smith
Account Manager, Organic Specialties
Process Chemicals Group
Rohm and Haas (UK) Ltd
Lennig House, 2 Mason's Avenue , CROYDON, CR9 3NB United Kingdom
Tel +44 (0) 20 8774 5300 Fax +44 (0) 20 8774 5301

Direct Tel: +44 (0) 7711 776605
Fax: +44 (0) 20 8774 5546
Order Placement Fax +32 (0) 3 451 3634
e-mail: wsmith--at-- rohmhaas.com

www.rohmhaas.com/markers
www.rohmhaas.com/road
www.primenes.com

==================================================

For USA based companies requiring small (1 kilogram) volumes of dye please contact Keystone Aniline in Chicago:-

www.dyes.com

Please specify the Rohm and Haas products by name to Keystone Aniline

==================================================

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blue 8AHF marine pollutant hazardous for transport !coloured smokes aerobatic aircraft jet eflux white smoke base automotive diesel heating oil light spindle oil bio-diesel methyl ester rapeseed automate red IKHF - blue 8AHF marine pollutant hazardous for transport n20090628--n20051028_161758-enh.jpg !perfect heart shaped contrail patrol of france - herzfoermig kondensstreifen skywriters contrail cloud paraffin smoke oil !perfect heart shaped contrail patrol of france - herzfoermig kondensstreifen skywriters contrail cloud paraffin smoke oil n20090628--n20051028_164826.jpg !Bapteme de l'air ecole de pilotage - flight baptism - pilot school advertisement base ulm crobeny !Bapteme de l'air ecole de pilotage - flight baptism - pilot school advertisement base ulm crobeny n20090628--n20051028_183809.jpg !French factory - giant industry conglomerate on return trip direction charleville mezieres france route d20a !French factory - giant industry conglomerate on return trip direction charleville mezieres france route d20a n20090629--n20051029_160744.jpg !Auchan luxembourg shopping mall kirchberg Mulliez family oligarchs french international retail group (not Utopolis Luxexpo) rue Alphonse Weicker !Auchan luxembourg shopping mall kirchberg Mulliez family oligarchs french international retail group (not Utopolis Luxexpo) rue Alphonse Weicker n20090629--n20051029_160812.jpg !T-shirt Hailu Emperor Tewoderos 1818-1868 (Tewodros, Theodore II of Ethiopia) Kassa Haile Giorgis Wondbewossen gondar qwara dembiya Giorgis !T-shirt Hailu Emperor Tewoderos 1818-1868 (Tewodros, Theodore II of Ethiopia) Kassa Haile Giorgis Wondbewossen gondar qwara dembiya Giorgis n20090629--n20051029_163325.jpg !people waiting for bus infront of hopeless world of gigante target walmart dominick supermarkets omni superstore carrefour tesco casino hypermarket auchan !people waiting for bus infront of hopeless world of gigante target walmart dominick supermarkets omni superstore carrefour tesco casino hypermarket auchan n20090629--n20051029_163359.jpg !luxembuorg people owned city number 1 bus to park and ride bouillon Irisbus Citelis by Fiat Iveco Renault in Lyon - rent bike veloh.lu !luxembuorg people owned city number 1 bus to park and ride bouillon Irisbus Citelis by Fiat Iveco Renault in Lyon - rent bike veloh.lu n20090629--n20051029_172438.jpg !driving overland expressway clearway freeway past windpower land - 4 turbines are erected every day - bundesstrasse schnellstrasse !driving overland expressway clearway freeway past windpower land - 4 turbines are erected every day - bundesstrasse schnellstrasse n20090629--n20051029_174104-false-colors.jpg !false colours - rainbow over remarkable ufo flying saucer building in Hunsrueck area 51 Germany - flugscheibe ufo fliegende untertasse gebaeude mit regenbogen !false colours - rainbow over remarkable ufo flying saucer building in Hunsrueck area 51 Germany - flugscheibe ufo fliegende untertasse gebaeude mit regenbogen

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