Technical Proposal for Light Helibasket for AW119 MKII

Boggi s.r.l. via G. La Pira n1 Valera Fratta (LO) via Paradisi 1/A, Reggio Emilia (RE)

tel. e fax +39 0371 99342 (Valera Fratta) tel. e fax +39 0522 557819 (Reggio Emilia) mobile +39 338 69 73 059 e-mail [email protected] P. IVA12837910152 R.I.CCIA n 8721 /1999

1 Technical_proposal_for_light_helibasket_for_AW119_MKII issue 4

Technical proposal for light helibasket for

Helicopter A119 MKII (proposed part number of the Change : 119M002-00)




Contents

1. Foreword 3

2. Technical specifications 4

3. Attachment system 5

4. Light helibasket 6

5. Medium helibasket 10

6. Large helibasket 13

Issues description Issue 1 dated 06

th September, 2011 : first issue for interested subject proposal

Issue 2 dated 22th

September, 2011 : second issue with medium helibasket preliminary design

Issue 3 dated 15th

October, 2011 : third issue with large helibasket preliminary design

Issue 4 dated 21th September, 2012 : new attachment sytem

List of effective pages

Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Issue 3 3 1 3 4 1 1 1 1 2 2 2 3 3 3




1. Foreword

This document is the initial proposal for a light helibasket for the helicopter A109MKII.

The technical proposal has been prepared by taking in to account customer requests and issues from the helicopter

TC Holder, Agusta Westland, after the meeting we had in June 2011 at Cascina Costa facilities with a CPE 119

representative.

The main issue of this meeting was the need to use structure attachment points normally used for the belly tank for

spray system, and not to use landing gear structure; this is because a fatigue problem encountered on helicopters

that install the actual helibaskets.

The geometry of the attachment point has been requested to the TC holder and implemented in a 3D CATIA V5

modeling environment, as basis to develop the here-after proposed ideas. Only the lower part of the helicopter has

been modeled.

All the system is patent pending of Boggi s.r.l.




2. Technical specifications

The technical and operative requests from the interested subjects, have lead us to find a solution for 3 helibaskets with

different sizes, by using a common attachment system. This means that the helibaskets can be interchangeable by using

the same parts to attach it to the helicopter structure.

a. Light helibasket

external dimensions 1200 mm length, 575 mm width, 250 mm height

payload : up to 70 kg

b. Medium helibasket


payload : up to 90 - 100 kg

c. Large Helibasket


payload : up to 90 - 100 kg

The helibaskets are here following illustrated.

The helibasket can be designed to be installed on the left or on the right side of the helicopter. Our suggestion is to use

the right side in order to avoid wake interference with the tail rotor.

We experienced this problem during the certification of the helibasket for the A119 (no MKII).




3. Attachment system

Here following the attachments system

Fig. 3.1 : attachment system

Attachment lugs

Adapters




4. Light helibasket

The light helibasket, as requested by interested subjects, is shorter than the distance between Agusta suggested

attachment points, so a special structure is needed to attach it to the attachment system.

Our suggestion to interested subjects is to evaluate the possibility to prolong the helibasket to the attachments and avoid

the special structure. The consequent weight increase can be mitigated or eliminated by changing some design details.

In order to allow quick mount of the helibasket, the attachment system include fixed pins in the upper part of the

adapters and quick release pins in the lower part.

Total estimated weight of the system (attachment system + light helibasket ) = 23 kg.

The total weight can be reduced by changing some design details, but this need to be discussed in depth with the

interested subjects.

Fig. 4.1 : perspective view of the helibasket and main overall measures (seen from Fwd)




Fig. 4.2 : perspective view of the helibasket (seen from Aft)

Fig. 4.3 : helibasket seen from Fwd with internal measures and indication of internal rings




Fig. 4.4 : helibasket seen from Fwd with opening for Bambi bucket cables passage : this is to allow the

transport for the Bambi with cables attached to the cargo hook under the helicopter

Fig. 4.5 : helibasket seen from FwD installed on the helicopter




Fig. 4.6 : helibasket mounted seen from below




5. Medium helibasket

The preliminary design of the medium helibasket, is here shown.


adapters and quick release pins in the lower part. The attachment system is the same used for the small helibasket.

Total estimated weight of the system (attachment system + medium helibasket ) = 35 - 40 kg.



Fig. 5.1 : medium helibasket with main overall measures




Fig. 5.2 : medium helibasket mounted on the helicopter by using the same attachment parts used

for the small helibasket

Fig. 5.3 : medium helibasket seen from the helicopter side




Fig. 5.4 : helibasket seen from Fwd with internal measures




6. Large helibasket

The preliminary design of the large helibasket, is here shown. The large helibasket was designed in addition of the other

in order to allow larger internal volume for skis and snowboards. Furhter development of this helibasket have to issue the

interference with the landing gear in both flight and ground conditions


adapters and quick release pins in the lower part. The attachment system is the same used for the small helibasket.

Total estimated weight of the system (attachment system + medium helibasket ) = 45 - 50 kg.



Fig. 6.1 : large helibasket with main overall measures




Fig. 6.2 : large helibasket mounted on the helicopter by using the same attachment parts used for

the others

Fig. 6.3 : large helibasket seen from the helicopter side




Fig. 6.4 : large helibasket seen from Fwd with internal measures

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Technical Proposal for Light Helibasket for AW119 MKII

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