“N500 Naviplane”的意思、由来-开放百科全书

词条

N500 Naviplane

释义

History
Crew
Flight control
Specifications (N500)
See also
References
External links

{{Infobox ship image

Ship image=

Ship caption=The N500 arriving at Dover in 1980
}}{{Infobox ship class overview

Name=N.500 Naviplane

Builders=SEDAM/SNCF

Operators=Seaspeed, Hoverspeed

Class before=N.300 Naviplane

Class after=

Subclasses=

Cost=

Built range= -1977

In service range=1977 -1985

In commission range=

Total ships building=

Total ships planned=

Total ships completed=2

Total ships cancelled=

Total ships active=

Total ships laid up=

Total ships lost=

Total ships retired=

Total ships scrapped=2

Total ships preserved=
}}{{Infobox ship characteristics

Hide header=

Header caption=

Ship class=

Ship type=hovercraft

Ship tonnage=

Ship displacement=

50|m|ft|abbr=on}}

23|m|ft|abbr=on}}

Ship height=17 m (55 ft 9 in) hovering

Ship draught=

Ship draft=

Ship depth=

Ship hold depth=

Ship decks=

Ship deck clearance=

Ship ramps=

Ship ice class=

Ship power=5 x 2,535 kW (3,400 hp)

Ship propulsion=5 × Avco-Lycoming TF-40 turboshaft

Ship speed=

Ship range=

Ship capacity=*400 passengers

55 cars

Ship troops=

Ship complement=

Ship crew=15

Ship time to activate=

Ship sensors=

Ship EW=

Ship notes=
}}

The N500 Naviplane was a French hovercraft built by SEDAM (Société d'Etude et de Développement des Aéroglisseurs Marins) in Pauillac, Gironde for the cross channel route. Intended to have a large passenger and crew capacity, it was for a while the largest hovercraft. Only two were built. The first was destroyed by a fire before entering service, the second proved unreliable and was broken up in 1985 at the end of its service.

History

N500-01 - Côte d'Argent registered LV 365.832 port of Le Verdon, Gironde estuary.

First flight on April 19, 1977 on the Gironde, demonstrating a speed of 40-45 knots (74–83 km/h). She was destroyed by a fire at her construction site on May 3, 1977.

N500-02 - Ingénieur Jean Bertin registered BL 341.931 port of Boulogne Sur Mer.

Built for Seaspeed by SNCF in 1977. Transferred to Hoverspeed in 1983 after a number of modifications but was returned to SNCF later that year after Hoverspeed decided she was not suitable for their services. Broken up in 1985 at the Boulogne Hoverport.

The N500 was one of the world's largest hovercraft; it could transport 400 passengers, 55 cars and 5 buses. It was also one of the fastest and reached a speed record for a travel from Boulogne to Dover at an average speed of 74 knots (137 km/h).^[1]

The mass of the N500 was 260 tons, it was 50 m long and 23 m wide.

Crew

1 pilot.

1 co-pilot.

Seated side by side in the cockpit.

1 radar-navigator seated at the rear part of the cockpit.

6 to 8 stewardess.

6 stower-men for the cars.

Flight control

Flight yokes controlled the horizontal tail wing (elevator), propeller pitch and the thrust power of the 3 propulsion gas turbines

Rudder pedals controlled the two aerial rudders.

Two thrust levers controlled power of the two lifting gas turbines.

Obturation flaps system between the air cushion chamber and the skirts provided additional longitudinal and lateral control.

Later modifications (1983) included:

A third rudder on the middle engine pylon.
Four air vent system providing additional lateral control at low speed.

Specifications (N500)

{{Aircraft specs
|ref=^[2]
|prime units?=met

|crew=15 to 17 (flight crew and cabin crew)
|capacity=400 passengers distributed on the two half superior decks, 55 cars on the main deck
{{convert|86.364|t|LT|abbr=on|0}} payload
|length m=50
|width m=23
|height m=17
|height note=hovering
|empty weight kg=120,147118.25
|max takeoff weight kg=243851
|fuel capacity={{convert|23,380|l|impgal|abbr=on|0}}

Oil capacity: {{convert|500|l|impgal|abbr=on|0}}

|more general=

|eng1 number=5
|eng1 name=Avco-Lycoming TF-40
|eng1 type= turboshaft
|eng1 kW=2386
|eng1 note=(continuous) {{convert|2,535|kW|hp|abbr=on|0}} (burst)

Max continuous RPM: 14,500
Fuel consumption: 247 Imp gal/engine/hour, fuel type: Kerosene JP4/TR4.

|prop blade number=4
|prop name=Hawker Siddeley and Ratier-Figeac variable pitch with reverse^[3]
|prop dia m=6.40
|prop dia note=

Propeller speed: 640 rpm

Operational Limits (Sea state): 1 - 1.5 m
Operational Limits (Wind): 6 (Beaufort Scale)

|avionics=The navigator has two marine Decca radars (band S, 2-4 GHz, a 7 cm and 10 cm wavelength), one slave radar for the pilot, two VHF radio.
}}

References

1. ^{{cite web|url=http://aernav.free.fr/Naviplane/Histo_Navi.html|title=Aérotrain et Naviplanes - L'histoire de la SEDAM et des Naviplanes|work=Aérotrain et Naviplanes|accessdate=2006-07-28}}
2. ^{{cite web|url=http://www.jameshovercraft.co.uk/hover/n500.php|title=SEDAM N500 Naviplane|last=Rowson|first=James|date=2009–2012|publisher=www.jameshovercraft.co.uk|accessdate=21 June 2012|location=UK}}
3. ^Ratier-Figeac Propeller manufacturers

External links

Les Naviplanes
[https://web.archive.org/web/20120204193313/http://www.hovercraft-museum.org/n500.html Transcript of a SEDAM publicity brochure]
N500 Naviplane gallery
Images of the transfer of the "Ingénieur Jean Bertin" from its production site to Boulogne

2 : Hovercraft|1977 ships

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