Hamilton H-47 metal tarpaulin
| Hamilton H-47 metal tarpaulin | |
|---|---|
|
|
| Type: | Airliner |
| Design country: | |
| Manufacturer: |
Hamilton Metalplane Company (Boeing subsidiary) |
| First flight: |
1928 |
| Commissioning: |
1928 |
| Number of pieces: |
25 H-45, 21 H-47 |
The Hamilton H-47 Metalplane is an all-metal monoplane airliner designed by aviation pioneer Thomas F. Hamilton. Other names for this model are Silver Eagles and, for the float variant, Silver Swans .
history
Thomas F. Hamilton's first design, the Hamilton H-18, dates from 1925. In 1928, the company was taken over by Boeing . It was first used for mail delivery in September 1928. This single specimen with a rounded hull and an open cockpit could only carry 6 people. Larger specimens with a more powerful engine are the Hamilton H-45 Metalplane and the Hamilton H-47 Metalplane . They were used as passenger planes at Northwest Airlines under the name Silver Streak until the outbreak of World War II , mainly on connections between the USA and Canada . A Hamilton H-47 metal plane operated by a Panamanian airline was used under the designation UC-89 during World War II. Today only one of these machines can fly.
Furnishing
The cockpit of the two pilots is behind the engine. The technical innovations of their time include the heated passenger cabin with six or eight leather-covered wicker chairs, and an on-board toilet was also available. The rigid chassis with wheel brakes was fitted with two low-pressure tires. Instead of the wheels, it was also possible to attach floats or ski runners. The propeller was made of metal. A screw drive starter motor was installed. The wings were wired internally for the optional connection of landing lights.
Technical specifications
| Parameter | Hamilton H-45 metal tarpaulin | Hamilton H-47 metal tarpaulin |
|---|---|---|
| crew | 2 pilots + 8 passengers | |
| length | 10.62 m | |
| height | 2.62 m | |
| span | 15.57 m | |
| Wing area | 33.4 m² | |
| Empty mass | 1,315 kg (298 kW motor) 1,650 kg (336 kW motor) |
|
| Total mass | 2,449 kg (298 kW motor) 2,608 kg (336 kW motor) |
|
| drive | a 9-cylinder radial engine Pratt & Whitney R-1340 Wasp , 298 kW (405 PS) or 336 kW (457 PS) |
a Wright Cyclone, 391 kW (434 PS) or an R-1690 Hornet with 410 kW (558 PS) |
| Top speed | 222 km / h | |
| Cruising speed | 185 km / h | |
| Max. Altitude | 3,962 m | |
| Range | 1,086 km | |
| sales price at the time | in 1926: US $ 23,200-24,500 | 1927: US $ 26,000 |
literature
- Collection folder: The fascination of flying . Map 58, Group 14, Aircraft Veterans FF-05-7220-060 DE-P-72-10-20-060 FF060
Web links
Individual evidence
- ^ ER Johnson: American Military Transport Aircraft , 2013, p. 150