Schweizer S333

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Schweizer 330 / S333
S.333 D-HSPC.jpg
Schweizer 333 on the apron
General information
TypeLight utility and trainer helicopter
Manufacturer Schweizer Aircraft Corporation
Sikorsky Aircraft
StatusActive In production
Primary users Dominican Air Force
History
Manufactured1988–present
Introduction date1992
First flightJune 14, 1988
Developed from Schweizer S300
Developed into MQ-8 Fire Scout
Sikorsky S-434

The Schweizer 330 and S333 are turbine-powered developments of the Schweizer 300 light piston-powered helicopter. As of 2007, only the Schweizer 333 remains in production. [1] In February 2009, the 333 was rebranded as the Sikorsky S-333. [2] In 2018 the Schweizer R.S.G. bought the Schweizer Aircraft from Sikorsky Aircraft and it was rebranded as Schweizer S333 again. [3]

Contents

Development

Schweizer 330

In 1987, Schweizer announced development of the Schweizer 330 using the dynamic components, rotors, controls and systems of the 300C; however, it was redesigned with an all-new fuselage. [4] The first 330, converted from a 300C and powered by an Allison 250-C10A, flew on June 14, 1988. The FAA certified the aircraft in September 1992.

The improved 330SP was introduced in May 1997 and featured an improved rotor and raised skids, which could be retrofitted to previous 330 models. An Allison (later Rolls-Royce) 250-C20W turboshaft was derated to 165 kW (220 hp), giving the 330SP excellent hot and high performance, maintaining power output to 18,000 feet.[ citation needed ]

Schweizer 333

Schweizer 333 Schweizer333.jpg
Schweizer 333

Shortly after the release of the 330, Schweizer began work on upgrading the dynamic components of the Schweizer 330SP. Over two years later, Schweizer released a new variant, the Schweizer 333. Featuring the newly developed dynamic systems components and new-technology rotor blades with a cambered airfoil and a larger diameter rotor, the upgraded helicopter benefited from a greater max gross weight, more useful load, more speed and more hover performance; nearly a 30% increase in performance over the 330SP. Schweizer created a kit to upgrade Model 330 and 330SP aircraft. [5]

In February 2008, an improved version of the series, the S-434 was released. [6] [7]

Design

The 330 used the 300C's dynamic components, a Rolls-Royce 250 turboshaft engine, and a new four-seat cockpit/cabin and body and new instrumentation.

Operational history

Schweizer was purchased on August 26, 2004, by Sikorsky Aircraft. The Schweizer 300/333 models fill a gap in the Sikorsky helicopter line, which is known for its medium and heavy utility and cargo helicopters. Sikorsky has since taken advantage of Schweizer's rapid prototyping technology, originally used during development of the 333 dynamic components and the RQ-8 prototype, to develop the X-2 Technology Demonstrator. [8]

Variants

A RQ-8A Fire Scout helicopter preparing to land on the USS Nashville Fire Scout unmanned helicopter crop.jpg
A RQ-8A Fire Scout helicopter preparing to land on the USS Nashville
330
Using the 300C dynamic components, Schweizer mounted a Rolls-Royce 250-C10A engine to the airframe and developed a new four-seat cockpit/cabin and body.
330SP
improved rotor and raised skids, Rolls-Royce 250-C20W engine.
333
Schweizer’s s333 turbine-powered aircraft features a 1,250 lb. useful load, making it a versatile platform for everything from military training and public service to personal use. With three- and four-seat configurations, this helicopter is an ideal initial turbine aircraft with lower direct operating costs comparable to other light turbine helicopters. [9]
RQ-8/MQ-8 Fire Scout
The Northrop Grumman MQ-8B Fire Scout is an unmanned derivative of the Schweizer 330SP/333 helicopter, with a new fuselage, new fuel system, and UAV electronics and sensors. It also utilizes a new four-bladed rotor system based on that of the Schweizer 333. The Fire Scout is currently in development for the United States Navy's VTUAV program with cooperation from Northrop Grumman. The original RQ-8A was based on the 330SP.
Sikorsky S-434
Based on improvements developed for the MQ-8B, this is a new version of the 333, having a four-bladed main rotor. [10]

Operators

Flag of the Dominican Republic.svg  Dominican Republic
Flag of Saudi Arabia.svg  Saudi Arabia

Non-state operators

Specifications (333)

Data from International Directory of Civil Aircraft [4] and Technical specifications [18]

General characteristics

Performance

See also

Related development

Aircraft of comparable role, configuration, and era

References

  1. ↑ Schweizer Aircraft 333 page Archived 2007-05-31 at the Wayback Machine
  2. ↑ "Sikorsky Press Release February 23, 2009". Archived from the original on July 25, 2011. Retrieved February 25, 2009.
  3. ↑ "HOME - Schweizer". Schweizerrsg.com. Retrieved 2022-05-02.
  4. 1 2 Frawley, Gerard: The International Directiory of Civil Aircraft, 2003-2004, page 190. Aerospace Publications Pty Ltd, 2003. ISBN   1-875671-58-7
  5. ↑ Flug Revue article on the 333 Archived 2007-06-15 at the Wayback Machine
  6. ↑ Sikorsky announces launch of Schweizer S-434 Commercial Helicopter at Heli-Expo
  7. ↑ Heli-Expo 2008: Sikorsky launches Schweizer 434
  8. ↑ "Rotor & Wing Magazine :: Big Plans". www.aviationtoday.com. Archived from the original on 2007-03-25.
  9. ↑ "4-Seater Helicopter Guide: Price Ranges, Best Uses and Options". Schweizerrsg. Retrieved 2025-01-27.
  10. ↑ Rotorcraft Report: New Schweizer Model? The Turbine 434 Archived 2008-12-01 at the Wayback Machine
  11. ↑ "Escuela de Helicópteros". aeroflight.co.uk. Retrieved 15 February 2013.
  12. ↑ "Dominican Republic Schweizer-333". Demand media. Retrieved 17 February 2013.
  13. ↑ Philippe Chapleau (29 November 2015). "DynCorp signe pour cinq nouvelles années de soutien au profit de l'Alat saoudienne" (in French). Ouest-France . Retrieved 2 December 2015.
  14. ↑ "Royal Saudi Land Forces". www.scramble.nl. 2015. Archived from the original on 25 September 2017. Retrieved 2 November 2015.
  15. ↑ "Turkish News - Latest News from Turkey". Hürriyet Daily News. Retrieved 2023-12-18.
  16. ↑ "Contract to Buy 16 Helicopters Signed by Kurdistan R. Govt. - Media monitor". www.ekurd.net. Retrieved 2023-12-18.
  17. ↑ "Archived copy". Archived from the original on 2014-10-14. Retrieved 2023-12-18.{{cite web}}: CS1 maint: archived copy as title (link)
  18. ↑ Technical Data Summary, Model 333 (PDF), archived from the original (PDF) on 2007-07-26
  19. ↑ Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
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