uld passive fire protected contact:dipl. ing. robert huebner baro-agentur ug t: +49 421 345100 cell:...

ULDPassive Fire Protected

Contact: Dipl. Ing. Robert Huebner BARO-Agentur UGT: +49 421 345100Cell: +49 151 2401 [email protected]

Proven Design Application and current Situation of Burn-Through Test

30. August 2011

Prepared by BARO-Agentur UG Document No: 0010-006-01- 03 Draft

ULD – Technical Status

30. August 2011 Prepared by BARO-Agentur UG Document No: 0010-006-01- 03 Draft

Aircraft Cargo Hold Burn-trough Protection

12

3

4

Here shown a class “C” cargo compartment according to FAR25.857(c)

Air-tighten Lining acc. to FAR 25.365(e) Burn-through requirement acc. to FAR

25.855(c). Test 1020°C for 5 minutes, Heat flux 90 KW/m2 – 2 Gallon Burner Test.

Design for security acc. to AC25.856-2A. Burner Test: 6 Gallon Test, 1100°C for 4 minutes, Heat flux 180KW/m2

Example taken from Airbus Aircraft in FRA/GE(Typ.)

Test performed according to EASA and FAA requirements as:• EASA CS25.855(c) and FAR 25.855(c),

appendix F – Part III

Burn-through test according to AC25.856-2. Certified first on Airbus aircraft “A330/A340” refer to FAA safety Finding-Issue Paper IP CI-6 signed at stage 4



Integrative Passive Fire Protection ArchitectureObjective:

• Improvement of overall cargo hold fire protection architecturetaking into account opportunities mainly given by new technologies (fuel cell and OBIGGS) and new materials (e.g. intumescent paint)

Topic Description:• Analyze new cargo hold classification, impact of

potential new restrictions regarding transportation of HAZMAT and opportunities given by new burn-through resistant materials

• Investigate synergistic effects between improved ULDs (with respect to burn-through characteristics) in combination with an improved passive fire protection system

• Analyze potential benefits if combining container tracking, container monitoring, improved lining and improved ULDs (burn-through and explosion proof) to create new business cases for airlines

Benefits:• Weight reduction• Offer of special services, e.g. transportation of “special

goods”• Improved lining architecture within cargo compartment

Partners:• SVT, TAG-Textile Supplier, DLR

LD3 ULD under Test. After 2 hours and temperature above 1000°C, no burn-through.

Picture to illustrate potential of new textiles and materials

After massive cut outs, burn-through were possible (see picture above)



INTUMESCENT COATINGS-PASSIVE FIRE PROTECTION

TECHNOLOGY• Utilization of intumescent materials for improving the fire

resistance (burn-through) criteria's of cargo holds.• Intumescent materials form a non-burnable protective layer

when exposed to flames or heat, which protects the covered material from heat intake by thermal insulation

• Intumescent materials belong to passive fire protection measures, which are intended to contain a fire in the cargo compartment fire of origin, thus limiting the speed of fire and preventing the fire from spreading

APPROACH• Utilization of intumescent materials on cargo hold systems

and equipment's to enhance the fire penetration resistance (burn-through) of cargo hold elements (cargo hold liner, ball mats, etc.

BENEFITS• New design concept for cargo hold lining structure leading

to a lightweight and less complex design, thus reducing weight and lead time.

• New cargo hold fire suppression concept allowing to optimize the weight of cargo hold fire suppression system

• Estimated weight savings: Cargo hold lining ca. 10 to 25 Kg Cargo hold fire suppression system: ca. 25 Kg Detailed analysis required to qualify weight savings

ACTIONS• Ensure protection concepts (Patent)• Harmonisation with airworthiness authorities• Definition of certification basis, like same safety finding as

done particular on cargo hold (ref to FAA IP CI´s• Elaboration of concepts; specification of technical

applications• Establish project team and provide funding• Perform trade-off study to quantify and identify:

Weight benefits Additional applications; other fields of application Possible Show stopper Certification constraints



Integrative Passive Fire Protection Architecture

LD3 burn tests at Test Facility Trauen/Graßberg/Germany.• The InnoTec Data presenter can show few pictures about the tests performed at

the village “Trauen” / north of Germany – DLR Test Center. • Figures gives some ideas about the tested materials and how they have

withstand the fire attack inside the cargo container until burn through.



ULD – Container Requirementsa) Canvas (protection cover) Requirements (SIOEN)

1) Intumescent Paint (part of Cover) used as a fire barrierI. FAA – MPS (DOT/FAA/AR-TN05/20, second update)

2) Cover must be equipped with an electrically conductive flexible mesh to detect surface damage

3) Cover must withstand short-circuit (short-circuit protected)4) Cover must withstand the rollable and foldable criteria5) Cover must withstand external and internal fire event (Burn-through)for

more than 5 hours due to rescue activities – TBC. International Authorities are in the Team identifying the safety rules.

6) Cover durability - min 10 Years7) Zip fastening elements (part of design criteria)8) Technical Specification, for manufacturer9) Technical Specification for secondary structure – status in work10) Technical Specification for the ULD Base plate – status in work11) Technical Specification for the shock damping of ULD baseplate – in work12) Etc.

Necessary next Steps for InnoTec Aviation:

ULD – Design Review

Prepared by BARO-Agentur UG Document No: 0010-006-01- 03 Draft

This document and all information contained herein is the sole property of BARO-Agentur UG. No intellectual property rights are granted by the delivery of this document or the disclosure of its content. This document shall not be reproduced or disclosed to a third party without the express written consent of BARO-Agentur UG. This document and its content shall not be used for any purpose other than that for which it is supplied.

The statements made herein do not constitute an offer. They are based on the mentioned assumptions and are expressed in good faith. Where the supporting grounds for these statements are not shown, BARO-Agentur UG will be pleased to explain the basis thereof.

30. August 2011

Thank you for attention

uld passive fire protected contact:dipl. ing. robert huebner baro-agentur ug t: +49 421 345100 cell:...

Documents