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taperwing6
ATO
Designed by Charles Meyers, the Waco 10 was a larger span development of the Waco 9, both single-engined three-seat single-bay biplanes constructed around steel-tube frames. The wing covering was fabric, and both upper and lower planes carried ailerons, which were strut linked. The two passengers sat side by side in a cockpit under the upper wing and ahead of the pilot, who had a separate cockpit. It had a split-axle fixed undercarriage and a tailwheel. The main undercarriage was fitted with hydraulic shock absorbers, unusual at the time on a light aircraft. The fin could be trimmed on the ground to offset engine torque, and the tailplane could be trimmed in flight. Initially it was powered by a Curtiss OX-5 water-cooled 90° V-8 engine producing 90 hp (67 kW).
 

Its first flight was in 1927. The improved WACO Model 10 replaced the Nine in 1927, featuring a larger wing area, bigger cockpit, an adjustable stabilizer, and the first shock absorber landing gear built into a small aircraft. The WACO 10's performance was markedly enhanced and the aircraft was sold with several different engine options (OX-5, OXX-6, Hispano-Suiza and Wright J-5 Whirlwind).

 

Noted for quick and straightforward takeoffs, a speedy rate of climb and equally tolerable landing speeds, the WACO 10's performance soon made it the most popular small aircraft in the United States. By 1927, more than 40 percent of small aircraft sold in the country were WACOs, including 350 WACO 10s at a sticker price of $2,460 (with the OX-5 engine). The WACO 10's reputation extended to the air race circuit as well: an OX-5 engine-powered model won the 1927 New York to Spokane, Washington, transcontinental Air Derby (Class B) and a Wright J-5-powered WACO 10 won the National Air Tour the following year.

 

Advance Aircraft went on to manufacture the notable WACO Taperwing in 1928 and then, in 1929, the company officially renamed itself the WACO Aircraft Corporation to correspond with its line of aircraft.

 
Waco 10
 
A Taperwing was flown to victory in the 1928 National Air Derby by Johnny Livingston a well known aviator, WACO dealer, airline operator and daring air-racer of the day.
 
In 1928, after the Waco 10 had entered production, Waco changed its designation system so that the basic model 10, powered by a 90 hp (67 kW) Curtiss OX-5 engine became the GXE. The OX-5 was also used in the Waco 9, and this led to the confusing popular description of both aircraft as Waco 90, after the power.
 
Other engines were fitted experimentally, without unique designations, including Rausie, Siemans, and the 115 hp (86 kW) Milwaukee Tank engine (ATC 2-363) in 1931. This was an air-cooled version of the Curtiss OX-5, and was intended as an aircraft engine.
 
 Waco-CTO
CTO

 

Later aircraft used a three-letter designation, the first denoting the engine, the second, S or T meaning Straight or Tapered wing and the final O indicating it belongs to the Waco O series for open cockpit. An -A suffix indicated an armed variant intended for export.
 
1929 Advance Aircraft Company Taperwing ATO
 
The Waco 10 turned out to have excellent handling, and there was a ready supply of war-surplus Curtiss engines. It was widely used for the popularisation of aeronautics through barnstorming and joyrides, and was also much used as a trainer and by small operators for charter flights.
 
The 1931 240-A was a single place armed export version of the CSO with a 240hp Continental W-670. Possibly only one was built.
 
Waco-240A
Waco 240-A at Resende Airfield, south of Rio de Janeiro, Brasil, mid-1932

 

It was numerically the most important type to be built by Waco (ATC 13), with at least 1,623 built over a period of 7 years from 1927 to 1933 and was fitted with a very large variety of engines of radial and V configuration. The unit cost was $2,145 minus engine & prop. The total price was $2,460, $2,385 in 1928, and $3,145 in 1929.

 
1930 Waco ATO Taperwing
 
ATO Scale replica:
Williams WACO RTO
WACO Aircraft Company ATO
 
Variation:
Klatt Screamin' Sasquatch / Jet Waco
 
 
Specifications:
 
Advance 10
Engine: OXX-6
 
Advance 10
Engine: Hisso A/E
 
Advance 10
Engine: Rausie
 
Advance 10
Engine: Siemens
 
Advance 10
Engine: Wrights J-4/J-5
 
Advance 10
Engine: 115hp Milwaukee Tank

 

10 / GXE / 90
Engine: 1 x Curtiss OX-5, 90 hp / 67 kW
Wingspan: 30 ft 7 in (9.32 m)
Airfoil: Aeromarine 2A
Length: 23 ft 6 in (7.16 m)
Height: 9 ft 0 in (2.74 m)
Empty weight: 1199 lb (545 kg)
Loaded weight: 2025 lb (920 kg)
Payload: 825 pounds (including pilot, fuel and oil) (374 kg)
Maximum speed: 97 mph (156 km/h)
Cruise speed: 84 mph (135 km/h)
Stall speed: 37 mph (60 km/h)
Range: 380 miles (610 km)
Rate of climb: 500 ft/min (2.54 m/s)
Crew: one
Capacity: two passengers
 
10-W / ASO / 220-T / J-5 Straightwing / Waco Sport / Whirlwind Waco
Waco 10 variant
Engine: 1 x Wright J-5, 220 hp / 164 kW
95 built
 
ATO
Taperwing variant of ASO
Engine: 1 x Wright J5-9, 220 hp / 164 kW
Seats: 3
Wing span: 30 ft 3 in
Max speed: 130 mph
54 built
 
BSO
Variant of ASO
45 built
 
BSO / BS-165
Engine: 1 x Wright R-540A, 165 hp / 123 kW
 
BSO-A
Engine: 1 x Wright R-540A, 165 hp / 123 kW
 
CSO / C-225
Engine: 1 x Wright R-760 / J-6-7, 225 hp / 168 kW
Variant of ASO
59 built
 
240-A
Engine: 240hp Continental W-670
Seats: 1
Armament: 2 x .30 Browning
 
 
CTO
Engine: 1 x Wright J6-7 / R-760, 225 hp / 168 kW
Seats: 3
Taperwing variant of CSO
35 built
 
CTO
ATC 267
Engine: Wright J-6, 250 hp
Top speed: 138 mph
Cruise speed: 118 mph
Landing speed: 57 mph
Landing run: 360 ft
ROC: 1100 fpm
Service ceiling: 17,000 ft
Fuel consumption: 12 USG/hr
Fuel capacity: 66 USG
Oil capacity: 8 USG
Length: 22 ft 5 in
Height: 9 ft
Wing span: 30 ft 5 in
Empty weight: 1677 lb
MTOW: 2600 lb
Std price: $8525
Number sold: 51
Seats: 3

 

DSO
Variant of ASO
62 built
 
10-H / DSO
Engine: 1 x Hispano-Suiza 8A, 150 hp / 112 kW
 
10-H / DSO
Engine: 1 x Hispano-Suiza 8E, 180 hp / 134 kW
 
HSO
Engine: 1 x Packard DR-980 Diesel, 225 hp / 168 kW
 
HTO
Engine: 1 x Packard DR-980 Diesel, 225 hp / 168 kW
Modified from HSO
1 built
 
JTO
Engine: 1 x Wright R-975 / J-6-9, 300 hp / 225 kW
1 built
 
JYO
Engine: 1 x Wright R-975, 300 hp / 225 kW
U.S. Navy version of JTO for evaluation.
2 built
 
KSO
Engine: 1 x Kinner K-5, 100 hp / 75 kw
 
OSO
Engine: 1 x Kinner C-5, 210 hp / 157 kW
 
PSO
Engine: 1 x Jacobs LA-1, 140/170 hp / 125/140 kW
 
QSO
Engine: 1 x Continental A-70, 165 hp / 123 kW
 
RSO
Engine: 1 x Warner Scarab, 110 hp / 82 kW
 
240-A
Engine: 1 x Continental W-670, 240 hp / 179 kW
1 conversion of Waco 10
 
 
 
 
 

 

 


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