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Van's Aircraft RV-4

RV-4
General information
TypeRV-4
National originUnited States
ManufacturerVan's Aircraft
Designer
Number built1446 (November 2022)[1]
History
Introduction date1980
First flightAugust 1979
Developed fromVan's Aircraft RV-3

The Van's RV-4 is an American light homebuilt aircraft supplied in kit form by Van's Aircraft of Aurora, Oregon. It seats two people in a tandem seating configuration with the pilot accommodated in the front seat.[2]

The Van's RV series has become the most popular kit-built aircraft in the world.[3] As of April 2019, the RV-4 is the fourth most popular RV model.[1]

As of November 2022, 1446 RV-4s had been completed and flown worldwide.[1]

Development

Van's Aircraft RV-4 at Kemble Airfield, England.
Van's Aircraft RV-4
Harmon Rocket II

Richard VanGrunsven designed the RV-4 in the mid 1970s as a two-seat development of the single-seat RV-3. The RV-4 prototype first flew in August 1979.

The RV-4 is a new design based upon the concepts proven in the RV-3 and is not merely a stretched RV-3. The RV-4 airframe will accept a range of engines up to 180 hp (134 kW), including the Lycoming O-360. The RV-4 has a new wing, with increased wingspan and wing area over the RV-3. The RV-4 is designed for sport aerobatics.

The RV-4 has proven to be a capable cross country aircraft in service, able to carry two modest sized people and baggage on longer trips. RV-4s have been flown around the world, notably by an Australian, Jon Johanson, who completed world-girdling RV-4 flights on two occasions.

Many larger people find the RV-4 cockpit design physically constraining, and as a result VanGrunsven has designed an entire family of derivative designs. The RV-6 was designed to allow side-by-side seating, and the RV-8 was created as an enlarged aircraft that follows the RV-4's philosophy and offers tandem seating in a bigger aircraft.

Unlike most later RV series designs, RV-4 kits are only available with conventional landing gear, although some may have been constructed in tricycle configuration by builders. At least two RV-4s have also been built with retractable landing gear (mostly for the engineering challenge, as the performance gains were modest).

Variants

RV-4
Basic version
Harmon Rocket II
Higher performance derivative of the RV4, with clipped wings, a 300 hp (224 kW) Lycoming IO-540 engine and a razorback turtledeck.[4]

Specifications (Typical RV-4)

Cockpit of an RV-4 in 2006.

Data from manufacturer[5]

General characteristics

  • Length: 20 ft 4 in (6.20 m)
  • Wingspan: 23 ft (7.0 m)
  • Height: 5 ft 5 in (1.65 m)
  • Wing area: 110 sq ft (10 m2)
  • Empty weight: 903 lb (410 kg) minimum
  • Gross weight: 1,500 lb (680 kg)
  • Fuel capacity: 32 U.S. gallons (120 L; 27 imp gal)
  • Powerplant: 1 × Lycoming O-360 four cylinder piston aircraft engine, 180 hp (130 kW)
  • Propellers: 2-bladed fixed pitch or constant speed propeller

Performance

  • Maximum speed: 212 mph (341 km/h, 184 kn)
  • Cruise speed: 200 mph (320 km/h, 170 kn) 75% power at 8,000 ft
  • Stall speed: 54 mph (87 km/h, 47 kn)
  • Range: 590 mi (950 km, 510 nmi)
  • Service ceiling: 23,000 ft (7,000 m)
  • Rate of climb: 1,950 ft/min (9.9 m/s)
  • Wing loading: 13.64 lb/sq ft (66.6 kg/m2)
  • Power/mass: 8.33 lb/hp

See also

Related development

Aircraft of comparable role, configuration, and era

References

  1. ^ a b c Vans Aircraft (November 2022). "First Flights". Retrieved November 7, 2022.
  2. ^ Vandermeullen, Richard: 2011 Kit Aircraft Buyer's Guide, Kitplanes, Volume 28, Number 12, December 2011, page 74. Belvoir Publications. ISSN 0891-1851
  3. ^ "Homebuilt Airplanes & Van's RV - EAA Museum". www.eaa.org. Retrieved May 20, 2019.
  4. ^ "Harmonrocket". Harmonrocket. Retrieved May 20, 2019.
  5. ^ Van's Aircraft. "RV-4". www.vansaircraft.com. Archived from the original on May 20, 2019. Retrieved May 20, 2019.
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