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Helicopter Survivable Height / Speed envelope Grégory Caudy, SFACT, DGAC France Research and Experience Feedback Office Helicopter H/S envelope Outlines - The SFACT research activities - Origin of this research program - Description of the study SFACT Research activities

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helicopter survivable height speed envelope

Helicopter

Survivable Height / Speed envelope

Grégory Caudy, SFACT, DGAC France

Research and Experience Feedback Office

the sfact research activities origin of this research program description of the study

Helicopter H/S envelope

Outlines

- The SFACT research activities

- Origin of this research program

- Description of the study

slide3

SFACT

Research activities

- Evolution of the regulation

- Various domains

Occupant survivability, Human factors, External hazards,

Environment and Innovation

- International cooperation

JAA RC, CSRTG, …

slide4

Origin of the project

- The Height / Speed envelope

SAFE LANDING

PROHIBITED AREA

height

O

speed

slide5

Origin of the project(II)

The regulation

- Compatibility between

T/O and Landing trajectories // Regulation

SAFE LANDING

PROHIBITED AREA

height

O

speed

slide6

Origin of the project(IIbis)

The operational context

- Compatibility between

T/O and Landing trajectories // Regulation

SAFE LANDING

PROHIBITED AREA

height

O

speed

slide7

Origin of the project (III)

- The Height / Speed envelope

- Compatibility between

T/O and Landing trajectories // Regulation

- Coherence between JAR 27/29 and JAR OPS3

Safe emergency landing

slide8

Description of the study

- Theoretical part : 1 year

Analysis of accident and flight test data

> Determination of the consistent parameters

Horizontal/Vertical speed, Rotor lift

Pitch, Roll, Yaw attitude

> Determination of the survivable envelope

Development of a structure model

JAR 27/29 helicopter

Survivable vertical speeds

slide9

Description of the study (II)

- Experimental part : 2 years

Validation of the model

Simulation of the h/s envelope for

> landing skids / wheels

> influence of the configuration

survivable height speed envelope low part especially

Final objective

Current envelope

No injury only material damage

No serious injury

Material damage

Forbiden area :

Serious injuries

Loss of the a/c

h

Survivable Height / Speed Envelope

( low part especially)

0

s

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