The DRA (RAE) research Puma, SA330

The SA 330 Puma is a twin-engine, medium-support helicopter in the 6-ton category, man­ufactured by Eurocopter France (ECF) (formerly Aerospatiale, formerly Sud Aviation), and in service with a number of civil operators and armed forces, including the Royal Air Force, to support battlefield operations. The DRA (RAE) research Puma XW241 (Fig. 4B.5) was one of the early development aircraft acquired by RAE in 1974 and extensively instrumented for flight dynamics and rotor aerodynamics research. With its original analogue data acqui­sition system, the Puma provided direct support during the 1970s to the development of new rotor aerofoils through the measurement of surface pressures on modified blade profiles. In


Fig. 4B.5 DRA research Puma XW241 in flight

Table 4B.3 Configuration data – Puma

ao

5.73/rad

Izz

25 889 kg m 2

xcg

0.005

a0T

5.73/rad

Ke

48 149 N m/rad

•50

0.008

atp0

-0.0262 rad

lfn

9m

52

9.5

efn0

0.0175 rad

ltp

9 m

53

1

4b.

‘^i

0

c

0.5401 m

It

9 m

5T0

0.008

gT

4.82

Ma

5805 kg

5T2

9.5

hR

2.157m

Nb

4

Ht

1.587m

R

7.5 m

Y

9.374

Ie

1280 kg m2

Rt

1.56 m

Ys

0.0873 rad

Ix:x

9638 kg m2

Sfn

1.395 m2

>2

1.052

Ixz

2226 kg m2

Stp

1.34 m2

&tw

-0.14 rad

Iyy

33 240 kg m2

sT

0.19

&idle

27 rad/s

Подпись: 266 Helicopter Flight Dynamics: Modelling
Подпись: - 4.535 m

the early 1980s a digital PCM system was installed in the aircraft and a research programme to support simulation model validation and handling qualities was initiated. Over the period between 1981 and 1988, more than 150 h of flight testing was carried out to gather basic flight mechanics data throughout the flight envelope of the aircraft (Ref. 4B.1). The aircraft was retired from RAE service in 1989.

A three-view drawing of the aircraft in its experimental configuration is shown in Fig. 4B.6. The aircraft has a four-bladed articulated man rotor (modified NACA 0012 section, 3.8% flapping hinge offset). The physical characteristics of the aircraft used to construct the Helisim simulation model are provided in Table 4B.3.

Leave a reply

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>