Ryan ST

Survivors

Several PT-22 remain in flyable condition worldwide, as the aircraft continues to be a popular sport plane and warbird.

* PT-22 "Recruit" (s/n 41-15721) is on display at the National Museum of the United States Air Force at Wright-Patterson AFB near Dayton, Ohio. This aircraft was donated to the Museum by Mrs. Nicholas A. Romano Jr. and her son Nicky of Hampton, Virginia in 1969 in memory of her husband who lost his life on 1 July, 1968 while piloting an aircraft in the Vietnam War. The aircraft was restored by the Department of Aviation Technology at Purdue University.[1]
* PT-22 is at the Air Zoo in Kalamazoo, Michigan
* PT-22 is at the Robins Air Force Base Museum of Aviation [1] in Warner-Robins,Georgia.
* A PT-22 is on display at the Evergreen Aviation & Space Museum in Minnville, Oregon.
* A PT-22 returned to display at San Diego Air & Space Museum in August 2009 after receiving a new paint job.
* A flying PT-22 is on display in the Port Townsend Aero Museum in Port Towsend, Washington.

Specifications (PT-22)

Additional specifications of interest to the pilot include:

* Fuel Capacity: 24 US Gal (19.99 IMP. Gal)
* Oil Capacity: 3 US Gal (2.5 IMP. Gal)
* Best Climb Speed: 79 mph (127 km/h)
* Best Glide Speed: 85 mph (137 km/h)
* Max Flap Extension Speed: 100 mph (160 km/h)
* Best Approach Speed: 85 mph (137 km/h)

The PT-22 fuel system consists of a single tank mounted forward of the front cockpit. Fuel is gravity fed to the carburetor through a fuel strainer.

A fuel selector valve, located on the left side of each cockpit has three positions: "main", "reserve", and "off". The "reserve" section feeds fuel from the reserve portion at the bottom of the aircraft's only fuel tank.

The fuel gauge consists of a sight gauge above the tank, visible to both pilots out the front of the aircraft.
The oil system is a dry-stump type, with all oil stored in a tank located on the front side of the firewall in the upper section of the fuselage.

Oil Pressure and temperature gauges are provided in each cockpit. Normal oil pressures range from 40 PSI (at idle) to a max of 125 PSI, with 100 PSI being ideal.

Normal oil temperatures range from a minimum of 35 degrees C to a max of 75 degrees C, with 60-75 degrees C being ideal.

The wing flaps are mechanically operated from a lever located on the left side of each cockpit.

Adjustable elevator trim is provided via an elevator trim tab controllable from a handwheel mounted on the left side of each cockpit. In its original configuration, the aircraft was not equipped with an electrical system.

Hydraulic brakes are provided for each wheel, controllable via the rudder pedals in each cockpit[8].

General characteristics

* Crew: two (student and instructor)
* Length: 22 ft 5 in (6.90 m)
* Wingspan: 30 ft 1 in (9.17 m)
* Height: 7 ft 2 in (2.18 m)
* Wing area: 134.25 sq ft[9] (12.5 sq m)
* Airfoil: NACA 2412[10]
* Empty weight: 1308 lb [11] (593 kg)
* Loaded weight: 1860 lb [12] (844 kg)
* Useful load: 552 lb [13] (250 kg)
* Max takeoff weight: 1,860 lb [14] (844 kg)
* Powerplant: 1× Kinner R-540, 160 hp [15] (120 kW)

Performance

* Never exceed speed: 190 mph (305 km/h)
* Maximum speed: 125 mph (200 km/h)
* Cruise speed: 100 mph (160 km/h)
* Stall speed: 62 mph, flaps down; 64 mph, flaps up (100 km/h, flaps down; 103 km/h, flaps up)
* Range: 231 miles @1560 RPM (371 km @1560 RPM)
* Service ceiling: 15,400 ft (4,700 m)
* Rate of climb: 710 fpm @ max TO weight (216 m/min @ max TO weight)
* Wing loading: 13.6 lb/sq ft ()

References

# United States Air Force Museum. Wright-Patterson AFB, Ohio: Air Force Museum Foundation. 1975.
# Pilots Flight Operating Instructions for Army Model PT-22 Airplanes, T.O. NO. 01-100GC-1. Wright-Patterson AFB, Ohio: US Army Air Forces. 1943.
# Ev Cassagneres (1995). The New Ryan: Development and History of the Ryan ST and SC. Eagan, Minnesota: Flying Books.

Variantes suite :

YPT-25

Military version of ST-4, ordered for evaluation; five built.

PT 25 toujours

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