Heath Parasol

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Heath Parasol
Heath Parasol.jpg
Parasol, photographed in 1935. [Notes 1]
Role Home-built aircraft
National originUnited States
ManufacturerHeath
Designer Edward Bayard Heath
First flight1926
IntroductionParasol (1926); 1927 (Super Parasol); 1930 (V Parasol; 1931 (LN Parasol)
Primary userRecreational flyers

The Heath Parasol is an American single or two seat, [1] open-cockpit, parasol winged, homebuilt monoplane.

Contents

Design and development

Heath Parasol LNA-40 of 1930 exhibited at Rhinebeck Aerodrome Museum, New York, in 2005 Heath Parasol LNA-40 Rhinebeck NY 10.06.05R.jpg
Heath Parasol LNA-40 of 1930 exhibited at Rhinebeck Aerodrome Museum, New York, in 2005
Heath LNB-4 Parasol (1929) Heath LNB-4 Parasol (2835375756).jpg
Heath LNB-4 Parasol (1929)

In 1926, Edward Bayard Heath, a successful American air racer and the owner of an aircraft parts supply business, built the first example of the Heath Parasol, a small, single seat parasol winged airplane using surplus wings from a Thomas-Morse S-4, a World War One fighter trainer, mounted above a steel-tube structure fuselage and powered by a Henderson four-cylinder motorcycle engine. [1] This was the prototype for a series of single and two-seat recreational craft that utilized the Clark Y airfoil. In 1929 Modern Mechanix magazine published the plans in a series [2] [ failed verification ] and the plans were reprinted in their "1930 Flying & Gliding Manual," which in turn has been reprinted periodically by the EAA (Experimental Aircraft Association). [1]

Although Heath died in 1931, his Parasol designs remained extremely popular, being economical to build and operate as well as easy to fly. Subsequently, the Heath Company of St. Joseph / Benton Harbor Michigan sold nearly 1,000 kits on an installment basis. [3] Fewer than 50 aircraft were factory built, but several hundred were completed and flown by homebuilders during the Great Depression. Heath is remembered today for having helped pioneer the homebuilt aircraft industry and for having introduced the kit concept of packaging the materials needed to build an aircraft.

When it ceased producing aircraft kits to concentrate on electronics (Heathkit), the Heath Company sold the ATC (CAA Aircraft Type Certificate) for the LNA-40 (ATC-487) [4] to the EAA, who continued to sell original plans to potential homebuilders. [1]

A modified Heath Parasol built and flown in 1934 by Bob Brown and Steve Nielson (right) at Home Hill in North Queensland. Heath Parasol1.jpg
A modified Heath Parasol built and flown in 1934 by Bob Brown and Steve Nielson (right) at Home Hill in North Queensland.
A Heath Parasol at Oshkosh 2003. Heath Parasol Oshkosh 2003.jpg
A Heath Parasol at Oshkosh 2003.

Except for the prototype, the wings consist of two solid spruce spars, built up wooden ribs, compression struts, and internal drag and anti-drag bracing. The Parasol's empennage is built of wood and is externally braced. Depending on the model, the fuselage was built of wood, bolted steel tube, or welded steel tube. [3] The wing, empennage, and fuselage are fabric covered. Two five gallon fuel tanks are typically installed at the root end of each wing, the fuel being gravity fed, sometimes to a small collector tank behind the firewall. The only tools necessary to assemble one of the Parasol kits were a pair of small pliers, screwdriver, hacksaw (with plenty of blades), hammer, small hand drill, chisel, center punch, file and drill.[ citation needed ]

A variety of powerplants could be fitted, including the factory-supplied converted Henderson Motorcycle engine (viz. 25 hp (19 kW) Heath-Henderson B-4). Post-war, the VW boxer engine was used as well. [1]

Production of an early version was undertaken as early as 1931, in Australia, by the Adcock-Heath Company.

Variants

Home building encourages local variations that blur type definitions for non-certificated versions.

Prototype
Used the 24 ft 0 in (7.32 m), wing from a Thomas-Morse S-4C "Tommy."
CA-1 Parasol
Wingspan of 24 ft 0 in (7.32 m), with square tips. Parallel wing struts. First built 1928. Not Certificated (nor required to be). One seat. 260 pound empty weight. Heath B-4 engine, 27 hp at 2800 rpm. [1] [5]
CA-1A Super Parasol
Wingspan of 25 ft 0 in (7.62 m), with rounded tips. Parallel wing struts. First built 1929. Not Certificated (nor required to be). One seat. 260 pound empty weight. Heath B-4 engine, 27 hp at 2800 rpm. [1] [6]
1930 Super Parasol
Also known as the V-Parasol. Span 25 ft 0 in (7.62 m), various more powerful engines and V-form wing struts. [7] [8]
LNB-4 Parasol
Wing span increased to 31 ft 5 in (9.58 m). N-form struts. One or two seat. 450 pound empty weight. Heath B-4 engine, 25 hp at 2800 rpm. Certificated (CAA, ATC-456) [4] June 3, 1932.
LNA-40 Parasol
Wingspan of 31 ft 5 in (9.58 m), V-form struts. One or two seats. 465 pound empty weight. Door moved to opposite side of fuselage to accommodate hand-propping the clockwise turning 37 hp (28 kW) (at 2550 rpm) Continental A40 powerplant. First built 1932. CAA type certificated (ATC-457) June 3, 1932. [4] [1] [9]

Surviving aircraft

Specifications (Super Parasol)

Heath Parasol 3-view drawing from Aero Digest March 1927 Heath Parasol 3-view Aero Digest March 1927.jpg
Heath Parasol 3-view drawing from Aero Digest March 1927

Data from Aviation [23]

General characteristics

Performance

See also

Aircraft of comparable role, configuration, and era

Notes

  1. Built by Methodist missionary Harold Shepherdson on Elcho Island in the remote Arnham Land region of northern Australia. It was built from an imported kit and fitted with DH.60 Moth main wheels and a 34 hp two-cylinder Bristol Cherub. The Reverend Shepherdson completed a number of ground runs in his Parasol before severely damaging it by hitting a tree stump. Its remains are now in the collection of the Australian Aviation Heritage Centre in Darwin.

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References

Notes

  1. 1 2 3 4 5 6 7 8 Bowers, Peter M. (January 1982). "The Heath Parasol". AOPA Pilot. pp. 69–71.
  2. "Modern Mechanics". Archived from the original on 2008-06-26. Retrieved 2008-06-07.
  3. 1 2 "Home". wisconsinhistory.org.
  4. 1 2 3 Federal Record: ATC 487, June 3, 1932
  5. McLaughlin, George F. (March 1927). "The Heath Parasol Sport". Aero Digest. Vol. 10, no. 3. p. 184. Retrieved March 13, 2021.
  6. "The Heath Super Parasol". Aero Digest. Vol. 14, no. 6. June 1929. p. 98. Retrieved March 13, 2021.
  7. Heath aircraft
  8. Bowers, Peter M. "The Heath Parasol" (PDF). Retrieved April 16, 2024.
  9. Air Progress Sport Aircraft: 70. Winter 1969.{{cite journal}}: Missing or empty |title= (help)
  10. "Heath LNB-4 "Parasol"". New England Air Museum. Archived from the original on 5 August 2020. Retrieved 23 January 2023.
  11. "Heath Parasol". Museum of Flight. Retrieved 23 January 2023.
  12. "Heath LNB-4 Parasol – N953M". AirVenture Museum. Archived from the original on 27 May 2007. Retrieved 23 January 2023.
  13. "Heath LNA-40 "Parasol"". Mid-Atlantic Air Museum. Retrieved 23 January 2023.
  14. Lilley, Joseph W. "1928 Heath Parasol". Western North Carolina Air Museum. Retrieved 23 January 2023.
  15. "Heath Parasol LNA-40". Old Rhinebeck Aerodrome. Retrieved 23 January 2023.
  16. "Museum Collection". Golden Age Air Museum. Retrieved 23 January 2023.
  17. "Airplanes by Year". Western Antique Aeroplane & Automobile Museum. Retrieved 23 January 2023.
  18. "Airframe Dossier - Heath Super Parasol, c/n 154, c/r N752Y". Aerial Visuals. Retrieved 23 January 2023.
  19. "Airframe Dossier - Heath Super Parasol, c/n 31919, c/r N1926". Aerial Visuals. Retrieved 23 January 2023.
  20. "FAA Registry [N1926]". Federal Aviation Administration. U.S. Department of Transportation. Retrieved 23 January 2023.
  21. "McKenna Heath Parasol". Moorabbin Air Museum. Retrieved 23 January 2023.
  22. "Antique Airplanes & Vintage Engines on Display". Eagles Mere Air Museum. Retrieved 23 January 2023.
  23. "Manufacturer's Specifications on American Commercial Airplanes as Compiled by Aviation" . Aviation . January 18, 1930. pp. inside front cover.

Bibliography

  • Berkeley, John (April 2021). "Parasol's Progress". Aeroplane . Vol. 49, no. 4. pp. 90–96. ISSN   0143-7240.

Further reading