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Nardi
FN-333 Prototype
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I-????
Protorype FN-333
Original Configuration |
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TECHNICAL DESCRIPTION |
Type
- Three Seat boat Amphibian.
Wings
- Shoulder wing cantilever monoplane. Two-spar all metal
construction. Centre-section, attached to hull, carries tail-booms
and engine mounting. Statically and aerodynamically balanced
ailerons. Split flaps inboard of ailerons. Gross wing area
13.5 m² (145.26 sq ft).
Hull
- Single step all metal structure. Hull below cabin floor has
series of watertight compartments. Deck of rear portion provided
with manholes and drain openings. Rudder hinged to sternpost.
Tail
Booms - Each is tapered tube made from a single duralumin
sheet. Boltet to wing centre-section through flanged duralumin
collars.
Tail
Unit - Rectangular tailplane between ends of booms.
Statically and aerodynamically balanced elevator has central
controllable trim-tab. Aerodynamically balanced rudders.
Entire tail-unit is of metal construction. Tailplane span
(centre-line of booms) 2.50 m (8 ft 2 in).
Landing
Gear - Retractable nose-wheel type. Two main units are
independent but are retracted by a single hydraulic jack. When
retracted, each unit is entirely buried in side of hull.
Oleo-pneumatic shock-struts- Wheels are of peralumin
anti-corrosive alloy and have Bendix-type hydraulic disc brakes.
Main wheel track 1.96 m (6 ft 5 in). Wheelbase 2.65 m (8 ft 8 in).
Wing
Tip Floats - Retractable floats are of peralumin alloy and
are carried on single struts. Hydraulic retraction. When
raised are located at wing tips.
Power
Plant - One 145 hp Continental horizontally-opposed
fan-cooled engine burried in centre-section. Aeromatic
automatically adjustable-pitch pusher propeller with armoured wood
blades. Electric starter. One 100 litre (22 imp gallons)
fuel tank in hull behind cabin.
Accommodation
- Cabin seats three, two each side and backs of front seats hinged
forward to give access to rear seat. Radio. Electric
position indicators for landing gear, flaps and wing-tip floats.
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I-????
Prototype FN-333
Modified engine air intake
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NARDI
FN-333
3-view
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SPECIFICATIONS
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Dimensions
| Span
(over wing-tip floats) |
10,0
m (32 ft 9½ in) |
| Length
of hull |
5,55
m (18 ft) |
| Overall
length |
7,0
m (22 ft 11 in) |
| Height |
2,66
m (8 ft 9 in) |
ENGINE
| Make |
Continental |
| Model |
O-??? |
| Power |
145 hp @ ? RPM |
Weights
and Loadings
| Weight
empty |
584
kg (1,285 lbs) |
| Disposable
load |
306
kg (673 lbs) |
| Weight
loaded |
890
kg (1,958 lbs) |
| Wing
loading |
65,9
kg/m² (13.51 lbs/sq ft) |
| Power
loading |
6,13
kg/hp (13.48 lbs/hp) |
Performance
| Max.
speed |
255
km/h (158 mph) |
| Cruising
speed |
230
km/h (143 mph) |
| Min.
speed |
77
km/h (47.8 mph) |
| Ceiling |
5.400
m (17,710 ft) |
| Normal
range |
800
km (500 miles) |
(JAWA 1953 - 54)
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I-KISS
Third Prototype FN-333
Rounded tail fins and main wheels folding into the wings
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Nardi
FN-333-S
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The FN-333-S is the production
development of the previously-described FN-333. It is powered by a
225 hp Continental engine, has accommodation for four persons and is
fitted with a novel form of wing-folding.
The wing of FN-333-S is in five
sections, consisting of centre-section and four outer sections, two each
side, the inboard sections being hinged to fold upward and the outboard
sections downward. The wing folding and unfolding, which is
controlled form the cockpit by a system of hydraulic jacks, is
automatically synchronized to ensure that, when the aircraft is afloat,
the wing-tip floats are in constant contact with the water so as to
maintain lateral stability. There is an independent control for
normal wing-tip float retraction and lowering.
There is no proof that Model FN-333-S ever was built,
with folding wings.
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SPECIFICATIONS (FN-333-S)
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Dimensions
Same as for FN-333 plus:
| Overall
width folded |
3,58
m (11 ft 9 in) |
ENGINE
| Make |
Continental |
| Model |
O-470-H |
| Power |
225 hp @ 2600 RPM |
Weights
and Loadings
| Weight
empty |
670
kg (1,474 lbs) |
| Disposable
load |
306
kg (673 lbs) |
| Weight
loaded |
976
kg (2,147 lbs) |
| Wing
loading |
72,5
kg/m² (14.86 lbs/sq ft) |
| Power
loading |
4,35
kg/hp (9.57 lbs/hp) |
Performance
| Max.
speed |
290
km/h (180 mph) |
| Cruising
speed |
260
km/h (161 mph) |
| Min.
speed |
82
km/h (51 mph) |
| Ceiling |
7.500
m (24,600 ft) |
| Normal
range |
650
km (405 miles) |
(Jane's All The World's Aircraft 1953 - 54)
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Nardi/FIAT
FN-333 (Pre-production)
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An un-known number of pre-production FN-333 were built by Nardi/FIAT.
They had main wheels folding into the wings and Continental O-470H
engine with carburetor. The production model had IO-470P engine with
fuel injection and main wheels folding into aft fuselage sides.
Known pre-production FN-333 aircraft are: I-EUST, I-ELYO,
I-RAID (I-RAIB), I-RAIE and I-RAIG. It seems that most pre-production
were remanufactured with main wheels moved to fuselage sides and delivered as
"production" models with IO-470-P engine.
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I-EUST
Pre-production FN-333
Instrument Panel
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I-EUST
Pre-production FN-333
Instrument Panel
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I-EUST
Pre-production FN-333
Main wheels folding into to the wings
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I-EUST
Pre-production FN-333
Landing light in nose
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SPECIFICATIONS (PRE-PRODUCTION)
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Dimensions
| Wing span |
10,36 m (34 ft 0 in) |
| Length |
7,30 m (23 ft 11.5
in) |
| Height from ground |
3,20 m (10 ft 6 in) |
| Main wheel track |
1,88 m (6 ft 2 in) |
| Wing area |
15,14 m² (163 sq
ft) |
| Luggage space |
0,425 m³ (15 cub
ft) |
ENGINE
| Make |
Continental |
| Model |
O-470-H |
| Power |
225 hp @ 2600 RPM |
Weights
and Loadings
| Weight
empty |
890 kg (1,962 lbs) |
| Useful load |
460 kg (1014 lbs) |
| Gross weight |
1.349 kg (2,975 lbs) |
| Wing
loading |
89,1 kg/m² (18 lbs/sq ft) |
| Power
loading |
5,62 kg/hp (12.4 lbs/hp) |
| Normal fuel capacity |
150 liters (33 Imp
gal) |
| Extra fuel |
59 liters (13 Imp
gal) |
Performance
| Maximum
speed |
290
km/h (180 mph) |
| Cruising
speed @ 8000 ft |
265 km/h
(165 mph) |
| Minimum
speed full load, flaps down |
105 km/h
(65 mph) |
| Climb rate at S/L |
6,49
m/sec (21,3 ft/sec) |
| Practical ceiling |
6.096 m
(20,000 ft) |
| Take off run - land |
274 m (300
yards) |
| Take off time - land |
14 secs |
| Landing run - land |
201
m (220 yards) |
| Take off run - water |
421 m
(460 yards) |
| Take off time - water |
28 secs |
| Normal
range |
901 km
(560 miles) |
| Maximum range |
1.247 km
(775 miles) |
(FIAT FN-333 Brochure # 1348, ca. 1958)
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FN-333 Riviera
(Production)
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I-RAIA
Production FN-333
Main wheels folding into aft fuselage
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TECHNICAL DESCRIPTION |
ENGINE
The FN-333 is powered by a Continental IO-470-P horizontally opposed,
six-cylinder engine, rated at 250 horsepower at 2,600 RPM. The
engine utilizes a wet sump oil system, dual magnetos, continuous flow
fuel injection and a jet augmenter exhaust system.
THROTTLE
The throttle has a knob and a knurled friction adjusting sleeve by which
proper friction drag may be applied to the throttle control.
To operate the control, grasp the knob between the thumb and two fingers
and push in the knob to advance the throttle, or pull out to
retard. Turn the knurled sleeve clockwise to increase the friction
drag and counterclockwise to decrease the friction drag.
NOTE - Because
of the constant speed propeller mechanism installed on the airplane,
advancing the throttle will not increase the engine RPM. It will
increase the manifold pressure. With each power increase, the
constant speed propeller automatically takes a larger pitch, enabling
the engine to run at a constant speed at all times. Engine RPM
can be changed by adjusting the propeller control.
MIXTURE
CONTROL
The mixture control incorporates a friction lock button to secure it at
the desired position. Push the control in to enrich the mixture
and pull out to lean. To stop the engine, pull the knob to
the IDLE-CUT-OFF position. Turn the knob in or out for close
adjustments.
IGNITION
SWITCH
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I-RAIA
Production FN-333
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SPECIFICATIONS (PRODUCTION)
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Dimensions
| Wing
span |
10,40
m (45.1 ft) |
| Length
overall |
7,39
m (24.3 ft) |
| Height |
3,22
m (10.6 ft) |
| Length
of boat hull |
6,30
m (20.669 ft) |
| Width
of boat hull |
1,17
m (46.06 in) |
| Wheel
track (center wheels) |
1,96
m (77.16 in) |
| Tailplane
width |
2,66
m (104.7 in) |
| Wing
area |
15,4
m² (163 sq. ft) |
| Cabin
height |
1,20
m (47.16 in) |
| Cabin
length |
2,90
m (114.00 in) |
| Cabin
width |
1,07
m (42.12 in) |
| Door
dimensions |
34,08
x 35.40 in |
| Baggage
space |
0,425
m³ (15 cu. ft) |
| Propeller
diameter |
2,15
m (84.64 in) |
ENGINE
| Make |
Continental |
| Model |
IO-470-P |
| Power |
250 hp @ 2600 RPM |
Weights
and Loadings
| Weight
empty |
1.030
kg (2,270 lbs) |
| Useful
load |
455
kg (1,000 lbs) |
| Maximum
weight |
1.485
kg (3,270 lbs) |
| Wing
loading |
96,4
kg/m² (20.05 lbs/sq ft) |
| Power
loading |
5,94
kg/hp (13.08 lbs/hp) |
Performance
| Max.
speed as sea level |
285
km/h (177 mph) |
| Stall
speed gear down, floats up, flaps 45° |
109
km/h (68 mph) |
| Cruise
speed at 75% pwr at 8,000 ft (max.) |
264
km/h (164 mph) |
| Fuel
consumption at 75% cruise |
48,8
l/h (12.9 US gal/h) |
| Cruise
speed at 75% pwr at 8,000 ft (rec.) |
245
km/h (152 mph) |
| Fuel
consumption at 60% cruise |
42
l/h (11.1 US gal/h) |
| Service
ceiling |
5.639
m (18,500 ft) |
| Normal
range at 60% pwr at 8,000 ft |
1.005
km (625 miles) |
(SIAI-Marchetti brochures and FN-333
Owner's Manual)
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I-RAIA?
Production FN-333?
Instrument Panel
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