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Subject: Stearman-Hammond Y-1
Date: 23 Sep 2018 07:01:32 -0700
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https://en.wikipedia.org/wiki/Stearman-Hammond_Y-1
The Stearman-Hammond Y-1 was a 1930s American utility monoplane built by the
Stearman-Hammond Aircraft Corporation and evaluated by the United States Navy
and the British Royal Air Force.
In the early 1930s Dean Hammond designed the Hammond Model Y a low-wing
monoplane twin-boom pusher monoplane. Hammond cooperated with the aircraft
designer Lloyd Stearman to develop the type for production. They formed the
Stearman-Hammond Aircraft Corporation in 1936 to build the aircraft as the
Stearman-Hammond Y-1. The first aircraft was powered by a 125 hp (93 kW) Menasco
C-4 piston engine driving a pusher propeller. The performance was not impressive
so it was re-engined with a 150 hp (112 kW) Menasco C-4S and re-designated the
Y-1S. Although designed to be easy to fly the high price meant only 20 aircraft
were produced.
The aircraft had no rudder as such, the tailplane fins being adjustable but
fixed in flight. Turning was by differential aileron and elevator alone.
Role
Utility monoplane
National origin
United States
Manufacturer
Stearman-Hammond Aircraft Corporation
Designer
Dean B. Hammond
Number built
approx 20
Variants
Hammond Model Y Prototype for the 1934 Bureau of Air Commerce safe airplane
competition.
Stearman-Hammond Y-1 Prototype aircraft with a 125hp (93kW) Menasco C-4 engine.
Stearman-Hammond Y-1S Production aircraft with a 150hp (112kW) Menasco C-4S
engine.
JH-1 United States Navy designation for two Y-1S used for tests
In 1934 the Bureau of Air Commerce held a competition for a safe and practical
$700 aircraft. In 1936 the winner of the competition was the Stearman-Hammond
Y-1, incorporating many of the safety features of the Ercoupe W-1. Two other
winners were the Waterman Aeroplane and a roadable autogyro from the Autogiro
Company of America- the AC-35. 25 examples were ordered by the bureau at a price
of $3190 each. The first delivery was considered unnacceptable in finish,
prompting the production of the re-engineered Y-S model.
Two Y-1S, serial numbers 0908 and 0909, were used for radio controlled
development trials by the United States Navy as the JH-1. A successful unmanned
radio-controlled flight was made with a JH-1 drone on 23 December 1937 at the
Coast Guard Air Station, Cape May, N.J. Takeoff and landing was controlled via a
landbased radio set; for flight maneuvers, control was shifted to an airborne
TG-2.
KLM purchased a Y-1 (PH-APY) for use in training their pilots in tricycle
undercarriage.
The Royal Air Force also evaluated a former KLM Y-1S in the 1940s.
Specifications (Y-1S)
General characteristics
Crew: 1
Capacity: 1
Length: 26 ft 11 in (8.20 m)
Wingspan: 40 ft 0 in (12.19 m)
Height: 7 ft 7 in (2.31 m)
Empty weight: 1,400 lb (635 kg)
Gross weight: 2,150 lb (975 kg)
Performance
Maximum speed: 113 kn; 209 km/h (130 mph) at 3000 ft (915 m)
*
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