Ing. Sergio Stefanutti had gained some experience in the mid 1930s with a little two seat tail first tourer.
Aircraft
Steen Steenship
LaMar Steen’s first airplane was a two-place, low-wing design named the Steenship. The Steenship has wooden wings, a tube-and-fabric fuselage, and originally sported a many-coat nitrate dope covering job. The modified O-290-G engine produced 140hp and gave the plane a very respectable cruise speed of 165 mph. In addition, it was stressed for aerobatics (+/- 9 G). Construction took 3-1/2 years and cost $3,800.
It first flew in July 1966 as N881LS. No plans were ever made available for the Steenship, and no original blueprints or construction drawings exist today.
The May 1989 issue of Sport Aviation had an article about Bob Leonard’s restoration of the plane in Healdsburg, CA. In mid-2002, Burt Nichols in Arkansas purchased it (still retaining the original registration number N881LS) and flew it regularly. After 200 hours in the first 9 months he decided to upgrade the original Lycoming O-290 to a Lycoming O-320. As of July 2003, it was very close to first flight with the new engine.
In late Jan. 2005, it was in the process of a rebuild.
Engine: 140hp Lycoming O-290G
Cruise: 145 mph
Stall: 60 mph
Load factor: 9G±
Seats: 2
Steen Firebolt
A Firebolt was Grand Champion at Oshkosh 1988.
Top speed: 214 mph
Cruise: 185 mph
Stall: 61 mph
Range: 550 nm
Rate of climb: 4000 fpm
Takeoff dist: 400 ft
Landing dist: 850 ft
Service ceiling: 18,000 ft
Engine: Lycoming IO-540
HP range: 180-340
Fuel capacity: 39 USG
Empty weight: 1354 lb
Gross weight: 2000 lb
Height: 7.6 ft
Length: 21 ft
Wing span: 24 ft
Wing area: 150 sq.ft
Seats: 2
Landing gear: tailwheel
Steen Skybolt
The Skybolt is a two-seat aerobatic biplane designed by Lamar Steen, an aerospace teacher in Denver. It first flew in October 1970 and received the EAA award for “Best School Project.” The Skybolt is stressed to + 12G’s and -10G’s. The wings are built around two spruce spars and are fabric covered, with four ailerons. The fuselage is a fabric-covered welded steel-tube structure. The aircraft can be fitted with engines ranging in size from 125 to 260 hp.
Engine: 180-hp Lycoming
Gross Wt: 1680 lb
Empty Wt: 1080 lb
Fuel capacity: 30-40 USG
Wingspan: 24 ft
Length: 19 ft
Wing area: 155 sq.ft
Top speed: 145 mph
Cruise: 130 mph
Stall mph: 50
Climb rate: 2500 fpm
Ceiling: 18,000 ft
Takeoff run: 400 ft
Range: 450 sm
Seats: 2
Engine: Lycoming IO-360-A1A, 200 hp
Vne: 170 kts.
Fuel cap: 110 lt + aux 37.85 lt.
Engine: Lycoming IO-540-D4A5, 260 hp
Speed max: 180 mph
Cruise: 160 mph
Range: 450 sm
Stall: 60 mph
ROC: 3500 fpm
Take-off dist: 300 ft
Landing dist: 800 ft
Service ceiling: 18,500 ft
HP range: 125-260
Fuel cap: 38 USG
Weight empty: 1250 lbs
Gross: 1800 lbs
Height: 7.2 ft
Length: 19 ft
Wing span: 24 ft
Wing area: 152.7 sq.ft
Seats: 2
Landing gear: tail wheel
Steen Aero Lab
Offers plans to construct the very-well-known Skybolt tandem two-seat sporting biplane, the Knight Twister biplane, and plans for the Pitts Special biplane.
1451 Clearmont St.NE, Palm Bay, FL 32905, USA.
1995: 1210 Airport Rd, Marion, NC 28752, USA.
Stebbins-Geynet Tri-Bi-plane / Model A / Model B
Airplane built by the Stebbins-Geynet Aeroplane Company of Norwich, Connecticut (William H. Stebbins of the USA and Louis Geynet of France), possibly the model A of 1909, which was equipped with a Cameron 25-30 hp four-cylinder, air-cooled engine. As a tri-bi-plane it had a detachable middle wing, which once removed converted the machine from a triplane into a biplane. Positive control was secured by use of the Stebbins-Geynet “auto-control” system. A pull or push movement operated the elevating rudders, while the balancing was done by means of side movements or slight turns. The rear vertical rudder was manipulated by means of a foot lever. It featured a single-place, open cockpit.
The Model B followed in 1910, same as the Model A, but with a seven-cylinder Holmes-modified Gnôme rotary, and 6sqft rudder instead of 10sqft.
Model A
Engine: 35-40hp Cameron pusher
Wingspan: 24’0″
Seats: 1
Model B
Engine: Gnôme
Wingspan: 24’0″
Seats: 1
Stearman-Hammond Aircraft Corp
USA
Formed 1936, after Dean B. Hammond and Lloyd Stearman had spent two years developing the Hammond Model Y two-seat twin boom pusher monoplane and the type had been granted an Approved Type Certificate. Aircraft had been redesigned for production as Y-1S and a few built before work was abandoned in 1938.
Aerial Aircraft Model A / Model B / Model C / Steaman Aircraft Company B-2
The Aerial Model B first appeared in 1941.
In February 1942 Aerial Aircraft Inc changed its name to Steaman Aircraft Company (not related to the Stearman Aircraft Company).
Production of the Model B resumed in 1944 when three were built.
The Models A, B, and C differed with the engines.
Aerial Model B
Engine: 65 hp Lycoming O-145-B2
Seats: 2
Aerial Model B
Engine: 75 hp Continental A75
Seats: 2
Aerial Model B
Engine: 80 hp Franklin 4AC-176
Seats: 2
Stearman B-2
Engine: 75 hp Continental A75
Wingspan: 30 ft
Length: 20 ft 2.5 in
Empty weight: 680 lb
Loaded weight: 1200 lb
Max speed: 125 mph
Cruise: 110 mph
ROC: 930 fpm
Range: 430 mi
Seats: 2
Aerial Aircraft Inc / Steaman Aircraft Company
In February 1942 Aerial Aircraft Inc changed its name to Steaman Aircraft Company (not related to the Stearman Aircraft Company).
Stearman XOSS-1
The Stearman X85 / XOSS-1 of 1938 was a USN scout-observation aircraft, with a single-float or wheels.
Only one was built.
XOSS-1 (X85)
Engine: 600hp P&W R-1340
Wing span: 36’0″
Length: 29’10”
Speed: 150 mph
Range: 832 mi
Seats: 2
Undercarriage: wheels
XOSS-1 (X85)
Engine: 600hp P&W R-1340
Wing span: 36’0″
Length: 34’6″
Speed: 148 mph
Range: 986 mi
Seats: 2
Undercarriage: floats
