2016.09.29

We are now well underway with efforts to flush hot water through the joints in the center section. Experience so far is positive, although we obviously also constantly face challenges in getting to some of the joints.

When efforts to flush the salt out of the joints is finished, we will lower the humidity in the warehouse down to 40% relative humidity. To dry the air in the hall we have now ordered a Munther ML 180 from the firm ATEAM Inneklima Service AS. For further information about the dehumidifier can open the link: http://ateam.no/munters-ml/

The dehumidifier is expected to be delivered ila. 8 weeks, and will be ready to wipe out the hall, when winter for a period makes it difficult to work there.

 

2016.09.06

We have been advised by Thorfinn Harbor, prof. II Dr. ing. Materials Science / corrosion, to clean aircraft salt sitting in the aircraft's many joints. His suggestion is to use hot water with pressure behind to drive out the salt. Such a solution is an option to dismount the aircraft to remove this salt.

We are now getting started with efforts to flush through the joints to get cleaned these for salt.

The solution we use to flush hot water between joints, is simple and probably effective. Pressure support and water heater we use a pressure washer Foma, with dieselvarmer. As nozzle used a ¼ "instrument with 1,2 mm I.D.. The pipe minimal outside diameter makes it easy to get fully into the joints. The solution seems promising, hot water flushed into, and through narrow passages. There will obviously be many challenges that will emerge along the way, and that we must try to find a solution when they appear. Not least this will be a prolonged work under marginal working conditions.

We have as a bearing line that the aircraft's originality should be emphasized highly in the work we perform It was therefore interesting to see if our solution with pressurized hot water would damage the paintwork. The experience from tests showed that paint, that is not already completely loose or significantly damaged, not being damaged by being flushed in with hot water and the dyseløsningen we used.

Using ¼ "high pressure instrument makes it easy to customize many different tube pieces. In this way, we can get the access to the many different varieties of joints that need to be flushed.

A thin nozzle be directed towards the openings at the joints

A thin nozzle be directed towards the openings at the joints

The use of thin high-pressure pipes makes us easily can customize the lances as how we have access to the joints.

The use of thin high-pressure pipes makes us easily can customize the lances as how we have access to the joints.

We have previously tested method by flushing the narrow joints.

We have previously tested method by flushing the narrow joints.

Foma pressure washer with water heater

Foma pressure washer with water heater

2016.06.12

The approaching summer sun holiday, and activity in the Heinkel 115 the project will be low until late in the summer. We have during the last few months mainly efforts to prepare for the big job of flushing all joints and joints in the center section and wing tips clean of salt. Work on the preparations have been both time consuming and tedious, but still a very necessary work, which unfortunately shows very little left in the grand scheme. It is therefore not much to talk about or show off photos. The only consolation is that we are now ready to start with water flushing, when we again start up work after the summer holidays.

We also worked on with putting in place a solution to dry air out the Heinkel hall. It's the time of writing still not quite clear whether we should invest in using an older unit that we've got, or whether we would rather be buying into a new and modern unit.

Our good friend Georg who have begun to work together with us, and is currently doing a great job of restoring the pilot's seat with seat related suspension.

The work to complete Trottle box, has been abandoned as a result of efforts to prepare for flushing of joints and joints, out in the hall. Some work is still been done on the box during the last weeks. This was when we started on the, full interior of mud from the inlet bottom, and the paint was heavily polluted by the process as follows lying 70 years in seawater. It was during the winter been completely disassembled and mechanically cleaned, before we began work to clean all components. Most of these were then first washed in a hardware store ultrasound sinks with Biltema kaldavfetting as detergent. Subsequently, they added a few hours in a 10 % Oksalsyre solution, before they were then neutralized in a water bath mixed with 2 % Blue Gold alkaline soap. Then it was time to consider what we saw was going to do to protect the original paint against future wear, before we again began to assemble together again all the parts that such a box consists of. The choice was between using Lanolin, paint with a cellulose lacquer or using Dinitrol Corroheat 4010. The choice finally fell on Corroheat 4010 because this provided a surface that does not collect dust, and that is not tacky to take in. It can and, if it becomes necessary, removed again from the surfaces at a later time. Consideration of the surface should not stick was decisive for the choice of treatment. This page Trottle Checkout Initially thought exhibited as a component that visitors can come to touch. Switches for magnets, gain control and starters are not yet ready for surface treatment, and we have not yet determined how to handle. Gas Hendler with lock, and handles for gasoline and triggers for fire fighting are mounted back checkout, and now works almost like when the plane was new.

There is a small milestone when we have started to mount back a few individual components. All components have been removed, has been marked with a unique number. This is then indexed in a registration form, where information about this part, where this was located, which images are taken of the part mxm. has become as listed. The information is then again been recorded digitally. It's a good experience when we reach for the first time be able to fill in the final information about what has been done with a part, before being back mounted, and saw the sign that the job was finished.

We want everyone who reads this record with a rich and long summer.

Trottle box before disassembly and cleaning

Trottle box before disassembly and cleaning

Throttle box after purification and gas, bensing and fire levers turn mounted back.

Throttle box after purification and gas, bensing and fire levers turn mounted back.

Here are a few more details mounted

Here are a few more details mounted

A milestone when we can now begin to supplement registration forms with final data

A milestone when we can now begin to supplement registration forms with final data

Georg has a steady hand to restore mechanically intricate parts, here a mechanism for adjusting the pilot's seat

Georg has a steady hand to restore mechanically intricate parts, here a mechanism for adjusting the pilot's seat

2015.12.16

Christmas approaches and we take a break in the work ahead until just after New Year. It feels fine that concrete hall is built in terms of warmth and comfort in winter. We have therefore decided to ustette the great job of flushing the joints, ribs and other joints clean of salt, to it again starts to get a little warmer in the Heinkel hall. But we are not unemployed for that reason, there is much work to do, and that can be done inside of the good and warm workshop.

8L + FH

Scale Drawing made by Kjetil Aakra and Erik Pilawskii

There is now consensus between the Foundation Aviation Museum and Jærmuseet about the way forward in dealing with Heinkel He 115 project. For us who work with aircraft, this is a great Christmas present and a shot in the arm in the future work.

You can read the document which is the basis for this agreement to open link; Plans for further work with He 115

We wish all those who have followed our work with Heinkel a Merry Christmas and an equally happy new year.

2015.12.01

We have now decided to dry the air in the concrete house where wings, center section and a majority of parts are stored. The decision is rooted in advice from Thorfinn Harbor, Prof Dr II. ing. Materials Science / corrosion and conservator Eirik Arebrot. The reason is the knowledge that the corrosion stops if the salt is isolated from being able to absorb moisture from the environment. This is a measure one get good a good effect of by reducing the moisture content in the environment of the smaller one 35- 40 % relative humidity.

Should we manage to lower the humidity down to such a level must be built made more dense than what it is today. We have given work to clog built to Sola Vision AS.

As a suitable unit to dry the air, we are the conservator Eirik Aarebrot been advised to use a Munters MH 270, Link; http://ateam.no/mh270. This is an aggregate that is widely used around the museums, and that they have a solid and positive experience with.

the plane is, when one takes into account that it has been almost 70 years on a fjord bottom, in an unexpectedly good condition. The solution to dry out the building where we hold and work with plane, now gives us more time to do the things that can ensure that we can continue to showcase an airplane how much of the original is taken care of.

2015.11.14

Heinkel He 115 the project has a strategy to test out new methods to clean and preserve the aircraft. Therefore, we have now tested 3D scanning of parts molded in magnesium. These are parts of double curved surfaces that are difficult to make good drawings. Since magnesium is a material that quickly corrodes will likely these parts within a reasonable short term be destroyed for us. 3D technology ensures us the opportunity to be able to make copies of these. To perform 3D scanning, we have chosen to use the firm Anko AS in Sandnes.

3The Skanner

3The Skanner

An armrest in the process of being 3D scanned at the company Anko AS in Sandnes

An armrest in the process of being 3D scanned at the company Anko AS in Sandnes

Magnesium parts with reference points used by 3D scanning

Magnesium parts with reference points used by 3D scanning

2015.10.28

We are of Thorfinn Harbor, prof. II Dr. ing. Materials Science / corrosion, been advised to clean the plane of salt sitting in the aircraft's many joints. His suggestion is to use hot water with pressure behind to drive out the salt. Such a solution is an option to dismount the aircraft to remove this salt.

We have after this meeting used the time to find a method that allows us to be able to supply water directly against the tight junctions.

The solution today we have tested, is as simple as it is effective. As pressure and water heater we use a pressure washer Foma, with dieselvarmer. As nozzle used a ¼“ instrument with 1,2 mm I.D.. The pipe minimal outside diameter makes it easy to get fully into the joints. The effect is impressive, water flushed into and through even very narrow passages.

We have as a bearing line that the aircraft's originality should be emphasized highly in the work we perform It was therefore interesting to see if our solution with pressurized hot water would damage the paintwork. The experience from tests showed that paint, that is not already completely loose or significantly damaged, not being damaged by being flushed in with hot water and the dyseløsningen we used.

Using ¼“ high pressure instrument makes it easy to customize many different tube pieces. In this way, we can get the access to the many different varieties of joints that need to be flushed. The upstream pipe is placed a closing valve toward the high pressure hose. If necessary we can easily create a pressure control. The solution allows Foma`en delivering continuous, and without constant starts and stops.

The working environment will be a challenge that we have to find solutions for, but the efficiency we have now experienced, allows creativity in the environment enough to manage to solve this challenge also.

Water clarification effective flushing through the joint between the ribs and the wing skin.

Water clarification effective flushing through the joint between the ribs and the wing skin.

Also narrow joints can be smoothly flush with hot water.

Also narrow joints can be smoothly flush with hot water.

2015.10.13

We have decided to allow an external company to do a 3D scan of a foot pedal, and an armrest of a chair, both of which are cast in magnesium. Magnesium parts disappear the fort, and it is therefore important to ensure us drawings of these parts before they disintegrate completely. The plane has had far more magnesium parts than these two, and many of the parts are sadly gone. That we are among the remaining sections choose to get exactly these 2 3D scanned, is because these portions have a number of double-curving surfaces that it is time consuming to recreate the CAD drawing.

We are fortunate and have been offered help to create CAD drawings by other magnesium parts that we completely or partially missing. This work is time consuming and will be done on a voluntary basis, but is probably the only way we can manage to get made new copies of parts that are now completely gone. Examples of such parts are the pilot's stick, Most of instrument panels, miscellaneous hhydrauliske cylinders mxm.

We have worked on preparing initiating job of flushing clean aircraft joints with hot water. Most of the equipment is now in place, we get in writing entered a proper electrical installation and lighting in Heinkel hall, and that we have donated a scaffold that we can use in future work.

Again we see that it is a local business who willingly support us when we ask for help for specific issues.

Foot pedal from the nose section which we'll get done a 3D scanning

Foot pedal from the nose section which we'll get done a 3D scanning

A hydraulic cylinder for operating the flap. This is a part that we will be helped to get drawn in CAD. Fortunately, we have both images and assembly drawings to aid in the effort to get the team a new machining drawing

A hydraulic cylinder for operating the flap. This is a part that we will be helped to get drawn in CAD. Fortunately, we have both images and assembly drawings to aid in the effort to get the team a new machining drawing

2015.09.28

We have earlier this summer had the pleasure of a visit from Thorfinn Harbor, Prof Dr II. ing. Materials Science / corrosion. The purpose of the visit was to obtain input to a method for safe removal of salt from the aircraft numerous joints. Here we have made a summary of the information we received in this meeting with Thorfinn Harbor

  • Corrosion in a piece of material does not have a knock-on effect against another piece of material that is undamaged and clean.

  • Salt will not create bonds with or penetrate into the material sit in plane.

    Salt will not penetrate into the aluminum. But it will be able to bind to aluminum through corrosion products on the surface.

  • Salt will penetrate the joints when a plane over time is submerged in seawater. Shall be removed salt must be "driven" out. This can be done by mechanical means, Fa.aks. through the application of hot water under pressure inside the joints. Hot water increases the solubility of salt relative to the cold water, and therefore increases the removal of salt.

  • salt solved / thinned easiest by water.

    Stagnant fresh water alone will in a small degree be able to drive salt from joints.

  • Corrosion can be stopped if the salt is isolated from being able to absorb moisture from the environment.

  • One can stop corrosion by reducing the moisture content of the environment of less than 35- 40 % relative humidity.

  • Salt water heated becomes more and more aggressively to aluminum. The oxygen content in the salt water will sink, but the chemical reactions will increase so much that on the whole becomes more aggressive. This is a safe rule for temperatures up to 100 degrees C.

  • Mixing a preservative product, like for example. Lanolin with salt, could reduce the corrosion rate, but not stop corrosion. Such products will not dissolve or carry the salt from a joining. Should preservative products stop corrosion, this must be done in that they serve as a barrier between the salt and humidity in the environment. A product e.g.. Lanolin will prevent the salt from drying out and thereby crystallize.

2015.09.05

In summer we have been visited by a professor in materials technology, Thorfinn Harbor. We challenged him on whether he could suggest one for us a realistic way to clean the plane on. Our premise of the question was that method way could be implemented within resource very narrow confines, and that we wanted to keep most of the aircraft's originality. Thorfinn Airport's response to the challenge was based on two facts; that between the joints, which has remained almost 70 years in seawater, it will have penetrated the salt, and that there must be an active driver to remove this again. As a practical solution, he suggested that we should try to flush the salt out of the joints in using hot freshwater.

In purely practical terms, this means that we must get to supply fresh water directly into the joints, m.a.o. will require an accuracy almost a dentist has. To this will require flushing nozzles with very small aperture ( 0,4mm ), which fortunately commodity. Many of the joint has a design that enables this, while there is often a 0,2- 0,4 mm opening therebetween. Some joints will necessarily pose a greater challenge.

We are currently investigating the practical aspects of such washing, and the method is currently at the study stage.

Simultaneously with this, we are working on with other things. Attached are a few pictures of things that are in the recent past has been dismantled / retrieved from the water bath cleaned

Detail of the starboard aileron crank
Detail of the starboard aileron crank

We often provide the parts in a system of unique numbers. Here, a push rod belonging to one aileron crank
We often provide the parts in a system of unique numbers. Here, a push rod belonging to one aileron crank
Lens with light shield mxm. The equipment belonged to a handheld camera.
Lens with light shield mxm. The equipment belonged to a handheld camera.
A block with various small parts Ernst cleaned and preserved ila. summer.
A block with various small parts Ernst cleaned and preserved ila. summer.