Lockwood Drifter

Last updated
Drifter
Tiger Aviation Drifter SB N90TA.JPG
1999 model Tiger Aviation Drifter SB
Role Kit aircraft
National origin United States
Manufacturer Lockwood Aircraft
StatusKits in production
Number built1425 (2011) [1]
Variants Lockwood Aircam
Sport Flight Talon
Advanced Aviation Explorer

The Lockwood Drifter is a family of high wing, single engine, pusher configuration, open cockpit, one and two-seat kit aircraft that was first introduced in the 1980s by Maxair and remains in production today by Lockwood Aircraft of Sebring, Florida. [1] [2] [3] [4] [5] [6] [7]

Contents

Development

The Drifter was first marketed by Maxair in the 1980s as both a single seat and two seats-in-tandem kitplane. The original single seater was light enough when fitted with the 28 hp (21 kW) Rotax 277 engine to qualify for the US FAR 103 Ultralight Vehicles category, with an empty weight of 240 lb (109 kg). [2] [7]

After Maxair went out of business, the design was picked up in 1997 by Lockwood Aircraft who produced kits for a number of single and two-seat versions, mostly differing by installed engine. The Lockwood versions are all wire-braced using a kingpost to support the ground wires. Over 1000 wire-braced Drifters have been completed and flown. [2] [3] [4] [5] [6]

Lockwood estimates that a builder will take 300 hours to complete a Super Drifter from the currently supplied kit. [6]

Australian developments

From the 1983, Austflight ULA originally based at Ballina, New South Wales began licence production of the Drifter. In 1986, the company moved to purpose built facilities at Boonah, Queensland where they built fully assembled Drifter variants certified by Civil Aviation Safety Authority for the Australian market with powerplants including Rotax 503 to Rotax 582 and Rotax 912 engines. Further improvements led to the Strut Braced (SB) version built to CAO 101.55 class certification in December 1993. [8] The Drifter SB was sold in the US in the 1990s by Tiger Aviation of Trenton, South Carolina. Over 500 strut braced Drifters were completed and flown. [3]

In late 1995 a joint venture called the Shanghai Fenton Light Aircraft Company (SFLAC) was established with the Shanghai Aircraft Manufacturing Factory for the manufacture of Australian versions in China. Austflight suffered financial losses due to the costs associated with certification and the joint venture agreement. In May 2002 Austflight sold the last of its assets and transferred the Drifter Type Certificate to Noosa Air Pty Ltd. Drifter Aircraft Pty Ltd of Dalby, Queensland was incorporated in 2006 to manufacture and market the Drifter and on the 1st of June 2006 was issued with a production certificate by CASA. [8]

Design

Avid Aviation's Austflight A503 being used for flying training at Dalby, Queensland, Australia. Flying @ Dalby 5-5-08 004.jpg
Avid Aviation's Austflight A503 being used for flying training at Dalby, Queensland, Australia.

All models of the Drifter are built around an aluminum tube keel, with aluminum tubing making up the keel-to-wing structure. There is no enclosed fuselage; the seats are open to the air. The conventional landing gear includes a steerable tailwheel. Most Drifter kits were delivered with a small fibreglass nose fairing. [2]

The wing is built from aluminum tubing and covered with pre-sewn Dacron sailcloth envelopes. Controls are conventional three-axis, with dual controls and center-mounted control sticks. Lockwood offers optional flaps as part of its STOL kit. The single seat Drifter and XP503 are both stressed for +6/-3g. [2]

With its large wing area, the Drifter adapted well to floats and was fitted with several types, including Full Lotus floats. The glide ratio is 9:1. [2] [3]

Operational history

Drifters have been widely used in a number of roles, including recreational flying, agricultural spraying, aerial photography, flight training and banner towing, during which many Drifters have accumulated high numbers of flying hours, leading one reviewer to note: "its long track record has revealed no weakness in the Drifter". [2] A number of Lockwood XP503s have been reported to have exceeded 3000 hours and one Drifter used for banner towing exceeded 10,000 flight hours. [2] [3]

In reviewing the Drifter, Andre Cliche said:

The outstanding aspect of the Drifter is its totally unobstructed view. The pilot sits on the boom tube with all the hardware behind him. This gives the impression of free flight. It is like you are flying a chair. The Drifter has other qualities of course. Its forgiving handling, mechanical simplicity, ease of maintenance and solid airframe all contributed to the Drifter’s good reputation. [2]

Bayerl et al. describe the aircraft as "light in weight, but aerodynamically handicapped", due to its high-drag cable bracing. [7]

Variants

Maxair Drifter
Single seat, wire braced, equipped with 28 hp (21 kW) Rotax 277 engine, 500 lb (227 kg) gross weight. [2]
Maxair Drifter DR447
Single seat, wire braced, equipped with 40 hp (30 kW) Rotax 447 engine, 785 lb (356 kg) gross weight. Intended for float use. [2]
Maxair Drifter XP503
Two seats in tandem, wire braced, equipped with 50 hp (37 kW) Rotax 503 engine, 785 lb (356 kg) gross weight. [2]
Lockwood Drifter DR447
Single seat, wire braced, equipped with 40 hp (30 kW) Rotax 447 engine, 785 lb (356 kg) gross weight. [3]
Lockwood Drifter XP503
Two seats in tandem, wire braced, equipped with 50 hp (37 kW) Rotax 503 engine, 785 lb (356 kg) gross weight. [3]
Lockwood Drifter MU582
Two seats in tandem, wire braced, equipped with 64 hp (48 kW) Rotax 582 engine, 900 lb (408 kg) gross weight. Intended for float and agricultural use. [3]
Lockwood Super Drifter
Two seats in tandem, wire braced, equipped with 80 hp (60 kW) Rotax 912 engine, 1,000 lb (454 kg) gross weight. Intended for amphibious float use. [4] [5] [6] [9]
Tiger Aviation Drifter SB
Two seats in tandem, strut braced, equipped with the 64 hp (48 kW) Rotax 582 engine or optionally the 80 hp (60 kW) Jabiru 2200 engine, 1,100 lb (499 kg) gross weight. 500 reported as flying. [3]

Specifications (Super Drifter)

Data from Lockwood Aircraft & Kitplanes [4] [5] [6]

General characteristics

Performance

See also

Aircraft of comparable role, configuration, and era

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References

  1. 1 2 Vandermeullen, Richard: 2011 Kit Aircraft Buyer's Guide, Kitplanes, Volume 28, Number 12, December 2011, page 59. Belvoir Publications. ISSN 0891-1851
  2. 1 2 3 4 5 6 7 8 9 10 11 12 Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, pages B-15 & B-74. Cybair Limited Publishing, 2001. ISBN   0-9680628-1-4
  3. 1 2 3 4 5 6 7 8 9 Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, pages 201 & 273. BAI Communications. ISBN   0-9636409-4-1
  4. 1 2 3 4 Downey, Julia: 1999 Kit Aircraft Directory, Kitplanes, Volume 15, Number 12, December 1998, page 72. Primedia Publications. ISSN 0891-1851
  5. 1 2 3 4 Downey, Julia: 2008 Kit Aircraft Directory, Kitplanes, Volume 24, Number 12, December 2007, page 60. Primedia Publications. ISSN 0891-1851
  6. 1 2 3 4 5 "Super Drifter". Archived from the original on 2016-02-19. Retrieved 2017-04-06.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  7. 1 2 3 Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 108. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
  8. 1 2 "Strut Braced Drifter ultralight aircraft". lightsportaircraftpilot.com. Retrieved 4 May 2016.
  9. ↑ Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 114. Flying Pages Europe SARL, 2015. ISSN   1368-485X
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