Halton Mayfly

Mayfly
General information
Type	Sports biplane
National origin	United Kingdom
Manufacturer	Halton Aero Club
Designer	C.H. Latimer-Needham
Number built	1
History
First flight	31 January 1927

The Halton Mayfly was a British two-seat biplane designed by C.H. Latimer-Needham and built by the Halton Aero Club between 1926 and 1927. ^[1] Registered G-EBOO and named the HAC.1 Mayfly it first flew on 31 January 1927. ^[1] It was converted to a single-seater and was flown in a number of air races including the King's Cup Race. ^[1] It was entered in the 1926 Lympne light aircraft trials as No. 8 but failed to arrive in time for the elimination trials. ^[2]

By 1928 the aircraft had been converted from a biplane to a parasol monoplane and was renamed the Halton HAC.2 Minus. ^[1] It was used again for air racing, being entered in the 1928 and 1928 King's Cup Races. ^[1] The aircraft was dismantled at Halton in 1930. ^[1]

Variants

HAC.1 Mayfly

Two-seat then single-seat biplane powered by a Bristol Cherub III engine. ^[1]

HAC.2 Minus

The Mayfly converted into a parasol monoplane. ^[1]

Specifications (Mayfly)

Halton HAC-1 Mayfly 3-view drawing from Le Document aéronautique October,1926

Data from ^[1]

General characteristics

• Crew: one
• Length: 22 ft 0 in (6.71 m)
• Upper wingspan: 28 ft 6 in (8.69 m)
• Lower wingspan: 22 ft 0 in (6.71 m) ^[3]
• Wing area: 195 sq ft (18.1 m²) ^[3]
• Empty weight: 480 lb (218 kg)
• Gross weight: 920 lb (417 kg)
• Powerplant: 1 × Bristol Cherub III Two-cylinder, air-cooled piston engine, 32 hp (24 kW)

Performance

• Maximum speed: 83.5 mph (134.4 km/h, 72.6 kn)
• Cruise speed: 75 mph (121 km/h, 65 kn)

References

Notes

1. Jackson 1973, pp. 319-320
2. Flight 16 September 1926 p.592-8
3. Flight 17 February 1927 p.83

Bibliography

• Jackson, A.J. (1973). British Civil Aircraft since 1919 Volume 2. London: Putnam. ISBN   0-370-10010-7.