Development of full composite propulsion system for UAV’s taking off

Unmanned Aerial Vehicles (UAV) often need propulsion systems able to allow them to reach cruising altitude before the automatic pilot system is activated. Low weight is in these cases a fundamental prerequisite for successful launches.In this project, the design, prototyping and testing phases of an innovative propulsion system for a UAV are illustrated.The system, produced entirely of composite m...
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TOPFIBRA involved in the aerospace industry’s satellite sector

TOPFIBRA has signed a Letter of Intent with GAUSS Srl for the implementation of the Filament Winding technology in the aerospace industry’s satellite sector.Since the beginning, we have focused on the EFFICIENCY of the results in the vast universe of FILAMENT WINDING, using our working methodology named EFFECTIVE FILAMENT WINDING.GAUSS Srl has perfectly perceived the essence and potential of the m...
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Four Hidden Dangers of Frequent Manual Cutting of GRP Pipes for Fittings

One of the main continuous activities performed in the process of preparation and manufacturing of GRP fittings is the manual cutting of the respective components.As I explained in the previous post, the cutting of large diameter GRP pipes for the manufacturing of fittings has always been a complicated and lengthy affair, and is therefore one of the most expensive, labour-intensive stages in the s...
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Save Money in Your Filament Winding Process with Optimal Infrared (IR) Curing

When you have to choose which Filament Winding technology to apply in your company and you don’t want to make a bad investment, doubts begin to take control and it seems that you are no longer able to think rationally.So, what exactly can a company do in order to avoid all this and produce the GRP in the most cost-efficient way?If you want to see the whole picture and make the right decision, you ...
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Discover the Viscoelastic Behaviour of the GRP Pipe

In order to have a good understanding of the GRP pipe behavior, one must understand the structural response of the “structural plastics”.The relationship between the stress and the strain, i.e. the structural response of plastics, varies from viscous to elastic, meaning that most structural plastics and reinforced plastics display a structural response which is intermediate between the viscous and...
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TIPS for Above and Below Ground GRP Pipe Installation

Laying GRP pipes above ground:The distance between the supports, the type of supports, the anchorage and the fixing points are defined in the design stage. In general, pipes should be supported by concrete cradles surrounding the pipes over an arc of 150° with a layer of rubber of at least 4 mm in thickness in between.During the laying operations, it is necessary to take all possible steps to avoi...
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The GRP pipe wall composition

The GRP pipe wall, or the be more exact the RTRP/RPMP pipe wall (RTRP means Reinforced Thermosetting Resin Pipe; RPMP means Reinforced Plastic Mortar Pipe, see previous article) consists of three layers perfectly adherent one to another and each having different characteristics and properties in relation to their function.The three layers are:Internal LinerMechanically Resistant LayerOuter LinerFo...
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RTRP, GRP or FRP? Find the answers

Along many years being involved in several projects, many times I have got recurring questions about filament winding products:Is GRP  the same as FRP?And what about RTRP?Which type of resins exist?What about the reinforcement?And what about the aggregates and the fillers?Unfortunately, the filament winding products are not very known. If the Engineers would deeply understand their advantages, the...
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The importance of a qualified GRP supervision

During my experience in the GRP pipe installation, before as a EPC Contractor and then as a Filament Winding Specialist, I was called to solve several mistakes occurred during the GRP pipes installation.The GRP pipes are very competitive nowadays and, as I said in the previous post , it is important that the Engineers, involved with specifying or designing with GRP pipes, should have a clear under...
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How To Increase The Efficiency Of The Fitting Manufacturing By More Than 50%

As you are well aware, the cutting of large diameter GRP pipes for the manufacturing of fittings has always been a complicated and lengthy affair, and is consequently one of the most expensive, labour intensive phases in the supply of GRP pipelines.During my visits in differents GRP plants around the world, I always saw the fitting department as the "dark side" of the GRP  manufacturing.Meanwhile ...
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