Loening R-4
Loening R-4 in 1922
Role	Racing Type of aircraft
National origin	United States
Manufacturer	Loening
First flight	10 January 1922
Primary user	US Army Air Service
Number built	2

The Loening R-4 was a racer aircraft built by Loening in the early 1920s.

Design

The R-4 featured a low-wing monoplane layout, and the Packard engine weighed three times the size of the aircraft and took up a quarter length of the R-4, nicknamed the "flying engine". Both R-4 racers (AS68559 and AS68560) were entered in the 1922 Pulitzer Trophy race with poor results, being reported as "almost total flops".

Operators

 United States

• United States Army Air Service

Specifications

Data from ,^[1] Airwar : Loening R-4^[2]

General characteristics

• Crew: 1
• Length: 7.16 m (23 ft 6 in)
• Wingspan: 8.20 m (26 ft 11 in)
• Gross weight: 1,383 kg (3,050 lb)
• Powerplant: 1 × Packard 1A-2025 V-12 water-cooled piston engine, 450 kW (600 hp)
• Propellers: 2-bladed fixed pitch propeller

Performance

• Maximum speed: 270 km/h (170 mph, 150 kn)