PROJECTS | AEROSPACE

IN COOPERATION WITH THE FRENCH COMPANY AT-2D A COMMON PROPOSAL FOR A SERIES OF ENVIRONMENTAL TESTS IAW RTCA DO 160 E

 LIST OF ENVIRONMENTAL TESTS

  • Temperature 
  • Altitude
  • Decompression 
  • Overpressure
  • Temperature variation 
  • Humidity
  • Operational shocks and crash safety
  • Vibration

High level – short duration vibration SOF Robust vibration – Random test procedure Robust vibration – Random test procedure

  • Explosive atmosphere 
  • Water proofness 
  • Fluid susceptibility 
  • Sand and dust 
  • Fungus resistance 
  • Salt fog 

LIST OF ENVIRONMENTAL TESTS

  • Magnetic effect
  • Power Input
  • Voltage Spike
  • Power Inputs
  • Audio frequency conducted susceptibility
  • Induced Signal susceptibility
  • Radio Frequency susceptibility
  • Emission of Radio frequency energy
  • Lightning induced transient susceptibility
  • Lightning direct effect
  • Icing
  • Electrostatic discharge
  • Fire Flammability

STUDY & DESIGN - MANUFACTURING SUPPORT PLATE FOR VIBRATION TABLE

Accomplished Tasks

  • Feasability Study

  • Design

  • Manufacturing

TEST TOOLS FOR THRUST LAUNCHER MEASUREMENT INCLUDING CONCRETE SUPPORT FOR LP10 DEMONSTRATOR ARIANE 6

Accomplished Tasks

  • Study
  • Design
  • Manufacturing
  • Welding

ENDURANCE TEST FOR A LOCKING DEVICE FOR OXYGEN BOTTLES INSTALLED ON A RESCUE HELICOPTER EC145-T2 DRF Luftrettung (Air Rescue)

Abstract

The present endurance test  presents the procedure that will be followed in order to test one locking device for oxygen bottles installed on an Airbus Helicopter  EC145-T2 to DRF Luftrettung (air rescue). 

The goal is to assess their mechanical endurance under “normal” operating conditions. Hence tests are performed for up to 300’000 cycles. Cyclic loading of the locking device takes place by the use of pneumatic cylinders. Frequency is kept low (1/5 Hz) so that no temperature effects can take place.

The present test plan and the corresponding report are intended to be part of the environmental test report of the OEM which begin the first installation in an Airbus Helicopter EC145-T2 of their totally redesigned and developed helicopter emergency medical system (AC70).

The study includes:

  • Design and manufacturing of a prototype for the execution of the preliminary test.
  • Design and manufacturing of the necessary jigs for the execution of the tests.
  • Design and manufacturing of the pneumatic system and electrical controls.
  • Issue of Test plan complied with customer specifications.
  • Assistance and monitoring of the Tests from skilled personnel.
  • Shooting and Video-registration of the parts or/and the Test execution.
  • Final Test Report.

MECHANICAL ENDURANCE TEST FOR RETAINERS SUITABLE FOR AIRCRAFT INTERIORS IN ITS LAB IN CONTROL ENVIRONMENTAL CONDITIONS (TEMPERATURE-HUMIDITY)

Abstract

The present endurance test  presents the procedure that will be followed in order to test one standard unit retainer as well as five cart retainers suitable for aircraft interiors. The goal is to assess their mechanical endurance under “normal” operating conditions. Hence tests are performed for up to 300’000 cycles. Cyclic loading of the retainers takes place by the use of pneumatic cylinders. Frequency is kept low (1/5 Hz) so that no temperature effects can take place.

The present test plan and the corresponding report are intended to be part of the environmental test report of the OEM reference E001-14-08 [2]

The study includes:

  • Design and manufacturing of the necessary jigs for the execution of the tests.
  • Design and manufacturing of the pneumatic system and electrical controls.
  •  Issue of Test plan complied with customer specifications.
  • Assistance and monitoring of the Tests from skilled personnel.
  • Shooting and Video-registration of the parts or/and the Test execution.
  • Final Test Report.

INVESTIGATION OF INFLUENCE OF RIVETED JOINTS ON DEFORMATION AND STRESS BEHAVIOR OF AN ATTACHMENT ASSEMBLY FOR INSTALLATION OF GALLEYS INTO AIRCRAFTS FROM ALUMINUM ALLOY

Abstract
In the present project a simplified lower attachment assembly, as used for installation of galleys into aircrafts, is investigated using analytical calculations, finite element method (FEM), and static tests. The aim of the project is to examine whether different rivet implementations, could lead to a better agreement with static test measurements. In addition this report examines if the provided rivet analysis tool of SolidWorks software would be in a position to safely predict the static behavior of riveted joints so that no failure occurs, overall deformations and stresses are also investigated.

The study includes:

  • Design of all parts and creation of a complete file for the manufacturing and assembly of the article.
  • Finite Element Method (FEM) simulations with the aim of
    SOLIDWORKS Simulation (CosmosM). In particular three different FEM simulation approaches are used to perform the rivet and deformation analysis.
  • Analytical calculations using the classical methods of Strength of Materials.

The study includes:

  • Design and manufacturing of the necessary jigs for the execution of the tests.
  • Manufacturing of a functional prototype in scale 1:1.
  • Static Test of the Assembly using a tailor made test jig. Moreover special jig jaws had to be manufactured in order to achieve the correct boundary conditions.          
  • Final test report including detailed photographs.

STRUCTURE ANALYSIS USING FEA METHOD OF A GALLEY ATTACHED TO THE AIRCRAFT FLOOR

Abstract
The present project refers to Finite Element Analysis (FEA) of an aircraft Galley consists of four (4) rectangular panels and appropriately placed on and attached to the floor grid of the aircraft.

Furthermore, one end of the tie-rod is attached to the upper side of the galley, while the other end of the tie rod is attached to an immovable support.

Sketch of galley that was modeled

Figure 1  was modelled using the Finite Element Method.

Floor structure & floor pinned and fixed connections

Figure 2 shows the schematic of the floor structure that was also modelled using FEM (The floor fixed & pinned connections are also visible).

The constructed FEM model

Figure 3 shows a view of the constructed FEM model. All modelled floor beam elements are shown and labelled.

INDUSTRIALIZATION FOR THE PRODUCTION OF AN AIRCRAFT COMPONENT OF A EUROPEAN COMPANY.

The study includes:

  • Issue of process sheet.
  • Design & Manufacturing of Tooling – Fixture.
  • Programming for CNC machine Centers.
  • Pilot production – First Article Verification.

Issue of process sheet

Design & Manufacturing of Tooling - Fixture

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