avia.wikisort.org - Aeroplane

The Arnold AR-5 is an experimental single seat, low-wing sport monoplane with fixed conventional undercarriage, designed and built by Mike Arnold.

Development and design

Originally conceived by Mike Arnold as a personal sport airplane with excellent performance and good handling qualities. The design outperformed initial performance estimates for its relatively low power output, exceeding 200mph with only 65hp.[1] Constructed of fiberglass-epoxy matrix composite material utilizing the "moldless method" popularized by Burt Rutan.[2] Careful attention to aerodynamic detail resulted in noteworthy laminar flow drag reduction, as documented by aerodynamicists Alex Strojnik and Bruce Carmichael.[3]

Legacy

In 1992, the AR-5 flown by Mike Arnold set the FAI C1a Class World Speed Record of 343,08 km/h over a 3.0km course.[4] Mike wrote several articles about his design methodology for various magazines.[5][6] The sole existing example resides at the Hiller Aviation Museum, San Carlos, CA.[7]

Specifications

General characteristics

• Wingspan: 21 ft (6.4 m)
• Wing area: 55.125 sq ft (5.1213 m²)
• Aspect ratio: 8
• Airfoil: Root: NACA 65/3-418 Tip: NACA 65/2-215
• Empty weight: 488 lb (221 kg)
• Fuel capacity: 12 Gal
• Powerplant: × Rotax 582 Inline, Liquid Cooled 2-Stroke., 65 hp (48 kW)

Performance

• Maximum speed: 213.18 mph (343.08 km/h, 185.25 kn)
• Cruise speed: 207 mph (333 km/h, 180 kn)
• Stall speed: 53 mph (85 km/h, 46 kn)
• Range: 500 mi (800 km, 430 nmi) 45 min reserve
• g limits: +6/-4g

References

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