Piper PA-18 Super Cub

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PA-18 Super Cub
VH-BAN Piper PA-18-150 Super Cub (6773146291).jpg
PA-18-150 over Watts Bridge Airfield
General information
TypeLight utility aircraft
National originUnited States
Manufacturer Piper Aircraft
Number built10,326 [1]
History
Manufactured1949–1983; 1988–1994
Introduction date1949
First flight1949
Developed from Piper PA-11 Cub Special

The Piper PA-18 Super Cub is a two-seat, single-engine monoplane. Introduced in 1949 by Piper Aircraft, it was developed from the PA-11 Cub Special, and traces its lineage back through the J-3 Cub to the Taylor E-2 Cub of the 1930s. In close to 40 years of production, over 10,000 were built. [1] Super Cubs are commonly found in roles such as bush flying, banner towing and glider towing.

Contents

Design and development

While based on the design of the earlier Cubs, the addition of an electrical system, flaps (3 notches), and a considerably more powerful engine (150 hp), made it a very different flying experience. Although the "standard" Super Cub was fitted with a 150-horsepower (112 kW) Lycoming engine, it is not uncommon to see them equipped with a 160-horsepower O-320-B2B, or even 180 horsepower (134 kW) Lycoming O-360 powerplant. The high-lift wing and powerful engine made the Super Cub a prime candidate for conversion to either floatplane or skiplane. In addition, the PA-18A (an agricultural version) was produced for applying either dry chemical or liquid spray.

The Super Cub retained the basic "rag and tube" (fabric stretched over a steel tube frame) structure of the earlier J-3 Cub.

Piper PA-18-150 Super Cub floatplane Piper Super Cub 1 1998-07-07.jpg
Piper PA-18-150 Super Cub floatplane
Super Cub PA-18 150 on floats in Georgian Bay 2023 Super Cub on floats.jpg
Super Cub PA-18 150 on floats in Georgian Bay 2023
Super Cub PA-18 on EDO 2000 floats, Georgian Bay 2024 Super Cub taxiing out.jpg
Super Cub PA-18 on EDO 2000 floats, Georgian Bay 2024

[2]

Piper Cub used for weather monitoring and instrument maintenance in Alaska in 1950 Piper PA-18 Super Cub on crane - Theb1936 - Flickr - NOAA Photo Library.jpg
Piper Cub used for weather monitoring and instrument maintenance in Alaska in 1950
Super Cub PA-18-150 on floats Super Cub in Georgian Bay.jpg
Super Cub PA-18-150 on floats

The first true "Super" Cubs had flaps, dual fuel tanks, and an O-235 Lycoming engine producing about 108 hp (115 hp for takeoff only). However, a 90 hp Continental variant without flaps and without the optional second wing tank was available. Their empty weight was, on the average, 800–1000 pounds with a gross weight of 1,500 lb. These Cubs would take off in about 400 feet (at gross weight) and land in about 300 feet using flaps. The Super Cub is renowned for its ability to take off and land in very short distances. The first Super Cubs were going to be offered with a unique four-wheel tandem main landing gear designed for landing and takeoff from rough terrain, but this was replaced with conventional landing gear. [3] [4] The O-290 Lycoming powered Cubs (135 hp) followed and would take off in about 200 feet (61 m). The landing distance remained the same at about 400 feet (120 m), or 300 feet (91 m) using flaps. With the use of the Lycoming O-320 at 150–160 hp, the Cub's allowable gross weight increased to 1,750 lb while retaining the capability of a mere 200 feet (61 m) required for takeoff.

The PA-18 has developed a very dedicated following in the bush-flying community, and many modifications have been developed for it, to the point where it is quite rare to find an original, completely stock Super Cub. Modifications include extended baggage compartments (reaching farther back into the fuselage, or even two-level baggage compartments in the top and bottom of the rear fuselage), external luggage pods, fuel pods, lumber racks for carrying construction materials into unimproved bush runways. Also the removal of header tanks, larger 24 or even 30 gallon wing fuel tanks, extended main landing gear for better ground clearance of the propeller, strengthened tailwheel springs, the addition of a small third passenger seat in the luggage area and lightweight generators and starters. Also various different mount areas for the battery (to move the weight forward, and reduce tail weight to shorten takeoff distance), various vertical stabilzer shapes to increase surface area, lengthened flaps, various wingtip designs, vortex generators on the leading edge of the wings, movement of the electrical panel from the right wing root to the dashboard to reduce fire hazard during a crash, and even the addition of a constant-speed propeller. Above all, the most common modification is the addition of "bush wheels" (themselves said to be direct descendants of Alvin Musselman's 1920s-origin "airwheel" tires used on the original Piper J-3), large, soft, low pressure balloon-tires designed to absorb impacts from rocks and boulders, and to not sink into sand or other soft surfaces, ideal for off-runway landings.

Variants

PA-18 Super Cub
A parked Super Cub CC-KWC (PA-18 Super Cub).jpg
A parked Super Cub
Prototype and production variant powered by a 95 hp Continental C-90-8F piston engine, sometimes known as the PA-18-95. [5]
PA-18-105 Super Cub
Production variant fitted with a 105 hp Lycoming O-235-C1 piston engine and larger tailplane. [5]
PA-18-105 Special
Special variant built in 1952 and 1953 for the Civil Air Patrol as a trainer with horn-balanced elevators and provision for seat parachutes. [5]
PA-18-125 Super Cub
Variant to replace the PA-18-95 with flaps and horn-balanced elevators and a 125 hp Lycoming O-290-D piston engine and either wood or metal controllable-pitch propeller. [5]
PA-18-135 Super Cub
Variant with a 135 hp Lycoming O-290-D piston engine and fitted with two wing tanks as standard. [5]
PA-18-150 9A-DBS, a Piper Cub with no military history.jpg
PA-18-150
PA-18-150 Super Cub
1954 variant with a 150 hp Lycoming O-320. [5]
PA-18-180 Super Cub
Experimental variant with a 180 hp Lycoming O-360 engine, one built in 1980 by Piper. [5] Other aircraft have been re-engined under a Supplemental Type Certificate. [6]
PA-18A
Designation for production agricultural aircraft, including cropdusters and sprayer variants and incorporating a slightly different rear fuselage profile to allow fitting of a hopper-tank in the rear seat position. [5]
PA-18S
Designation for production aircraft fitted with floats. [5]
PA-18AS
Designation of a small number of agricultural aircraft fitted with floats. [5]
PA-19 Super Cub
Original designation of the military variant of the PA-18, only three built and all subsequent military production were designated as PA-18s. [5]
Aeromod Loadstar Model 100
Biplane conversion of Super Cub, powered by 135 hp (101 kW) O-290-D engine, designed for improved capability from high-altitude airfields. [7]
SAFAT 01
A Sudanese development / copy built by the SAFAT Aviation Complex at Khartoum.[ citation needed ]

Military designations

L-18C Super Cub
Military designation of the PA-18 Super Cub for the United States Army, powered by a 95 hp (71 kW) Continental C90-8F piston engine, 838 delivered, at least 156 of which were delivered to other nations under MDAP. [8]
YL-21 Super Cub
Two Super Cub 135s for evaluation by the United States Army. [9]
L-21A Super Cub
Military designation of the Super Cub 125, powered by a 125 hp (92 kW) Avco Lycoming 0-290-II piston engine, 150 delivered. [9]
L-21B Super Cub
Military designation of the Super Cub 135, powered by a 135 hp (101 kW) Avco Lycoming 0-290-D2 piston engine, 584 delivered many to other nations under MDAP, re-designated U-7A in 1962. [9]
TL-21A
A number of L-21As were converted into training aircraft.
U-7A Super Cub
1962 redesignation of the L-21B. [9]

Operators

Military operators

Flag of Argentina.svg  Argentina
Flag of Austria.svg  Austria
Flag of Belgium (civil).svg  Belgium
Flag of Cyprus.svg  Cyprus
Flag of Germany.svg  Germany
Flag of Greece.svg  Greece
Flag of Iran.svg  Iran
Flag of Italy.svg  Italy
Flag of Israel.svg  Israel
Flag of Japan.svg  Japan
Japan Ground Self-Defense Force L-21B Japan 300316 Tokorozawa Piper L-21 01.jpg
Japan Ground Self-Defense Force L-21B
Flag of Katanga.svg  Katanga
Flag of the Netherlands.svg  Netherlands
Flag of Nicaragua.svg  Nicaragua
Flag of Norway.svg  Norway
Flag of Portugal.svg  Portugal
Flag of Sweden.svg  Sweden
Flag of Switzerland (Pantone).svg  Switzerland
Flag of Turkey.svg  Turkey
USFWS Super Cub, used for law enforcement in Alaska. 1970 Piper PA-18-150 Super Cub C/N 18-8898 Heather Bartlett USFWS.jpg
USFWS Super Cub, used for law enforcement in Alaska. 1970 Piper PA-18-150 Super Cub C/N 18-8898
Flag of Uganda.svg  Uganda
Flag of Uruguay.svg  Uruguay
Flag of the United States (23px).png  United States

Civilian Users

Flag of the United States (23px).png  United States

Specifications (PA-18-150 landplane)

3-view line drawing of the Piper PA-18 Super Cub Piper PA-18 Super Cub 3-view line drawing.svg
3-view line drawing of the Piper PA-18 Super Cub

Data from Jane's All The World's Aircraft 1976-77 [19]

General characteristics

Performance

See also

Related development

Aircraft of comparable role, configuration, and era

Related Research Articles

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References

  1. 1 2 Cox, Jack. "Piper PA-18 Super Cub History". Christian Sturm's Experimental Super Cub Project. Retrieved September 19, 2021.
  2. personal pictures 2023,2024 in Georgian Bay, Canada
  3. "Steep Climbing Air Horse For Farmers." Popular Mechanics, September 1950, p. 156.
  4. On a taildragger, the optional Whitaker tandem main landing gear was difficult to steer on a paved surface, whereas two large balloon tires provide maneuverability comparable to standard tires while still providing the flotation required on soft surfaces.
  5. 1 2 3 4 5 6 7 8 9 10 11 Peperell 1987, pp. 69–78
  6. "Supplemental Type Certificate SA92NW Installation of Lycoming 0-360 series engine, McCauley, Sensenich Propeller Manufacturing Co., or Sensenich Wood Propeller Co, Inc. propeller and associated hardware per Cub Crafters, Inc. Master Drawing List 101000-MDL, Revision U, dated February 27, 2004, or later FAA approved revision." (PDF). Federal Aviation Administration. 4 June 2004. Archived from the original (PDF) on 2011-06-08. Retrieved 2010-03-06.
  7. Taylor 1967, p. 190.
  8. 1 2 3 4 Andrade 1979, p. 131
  9. 1 2 3 4 5 6 Andrade 1979, p. 134
  10. Rivas, Santiago (April 2021). "Cracking the Drug cartels". Air International . Vol. 100, no. 4. pp. 46–49. ISSN   0306-5634.
  11. Wheeler 1974, pp. 174–175.
  12. (in Italian) ANAE; La nostra storia Archived 2014-12-05 at the Wayback Machine
  13. Wheeler 1974, p. 177.
  14. "Congo, Part 1; 1960–1963". ACIG. 2003. Retrieved 2013-08-09.
  15. Wheeler 1974, p. 180.
  16. Wheeler 1974, p. 181.
  17. Wheeler 1974, p. 186.
  18. Steinemann Air International February 1992, p. 76.
  19. Taylor 1976, pp. 347–348.

Bibliography