Engineering:Arnold AR-5
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.[citation needed]
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.[3] Mike wrote several articles about his design methodology for various magazines.[4][5] The sole existing example resides at the Hiller Aviation Museum, San Carlos, CA.[6]
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
- ↑ "Prologue - Mike Arnold and the AR-5". 2016-10-20. http://www.ar-5.com/images/sportsmanpilot1.PDF.
- ↑ Factory, Rutan Aircraft (2005) (in en). Moldless Composite Sandwich Aircraft Construction. Aircraft Technical Book Company. ISBN 978-0-9774896-1-9. https://books.google.com/books?id=eRyiMwAACAAJ. Retrieved 2021-11-22.
- ↑ "Michael S. Arnold (USA) (1097)" (in en). 2017-10-10. https://www.fai.org/record/1097.
- ↑ ""Inverse Pressure. Gradient Matching ... and other ideas for designing fast, low wing airplanes that climb and turn like mad" by MIKE ARNOLD". http://contrails.free.fr/temp/Inverse%20pressure%20gradient%20matching.pdf.
- ↑ Kitplanes (2021-07-02). "Archive: October 1999" (in en-US). https://www.kitplanes.com/archive-october-1999/.
- ↑ "Hiller Aviation Museum - Models on Display" (in en-US). https://www.hiller.org/museum/aircraft-on-display/.
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