World Library  
Flag as Inappropriate
Email this Article

Hamilton H-47

Article Id: WHEBN0026998299
Reproduction Date:

Title: Hamilton H-47  
Author: World Heritage Encyclopedia
Language: English
Subject: Northwest Airlines, Stout Skycar, Rearwin Sportster, Funk B, Chase XC-123A
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Hamilton H-47

Hamilton H-45 and H-47
The sole surviving Hamilton H-47 in Northwest Airways markings exhibited at EAA Oshkosh Wisconsin in 2010
Role Civil passenger and mail carrier
National origin USA
Manufacturer Hamilton Metalplane Co.
Designer James McDonnell[1]
First flight 1928
Number built 46?

The Hamilton H-45 and Hamilton H-47 were six-passenger-seat, all-metal, high-wing monoplanes powered by single Pratt & Whitney radial engines. They were built for passenger and mail-carrying work in the US in the late 1920s.

Design and development

The Hamilton Metalplane Company, which merged with Boeing in 1926, built some of the earliest all-metal US aircraft. The H-45 and the H-47, which differed chiefly in having a more powerful engine, were part of that series.[2]

Both types were corrugated-aluminium-skinned in the Junkers style. The high wings were semi-cantilevers, unsupported apart from pairs of parallel struts from the fuselage bottom edge to the wing close to the fuselage. The main legs of the fixed, tailwheel undercarriage were attached at the same wing points as the struts and joined laterally by inverted V bracing. The fuselage was flat-sided, with wide windows to the passenger cabin under the wing. This was accessed via a portside door, aft of which was a smaller door into a baggage compartment. The two crew members sat in a cabin in front of the wings, accessed by a rooftop hatch. The tail was conventional, with a braced tailplane.[2]

Both the H-45 and the H-47 were powered by a single, uncowled, Pratt & Whitney 9-cylinder radial: the H-45 had a 450 hp (335 kW) Wasp and the H-47 a 525 hp (390 kW) Hornet. The Hornet gave a 10 mph (16 km/h) increase in cruising speed and a slight (3%) increase in useful load to 2300 lb (1043 kg).[2]

Both types first flew in 1928. Both could be mounted on floats. In all, about 25 H-45s and 21 H-47s were built.[2]

Operational history

The H-45 and H-47 were used from 1928 to operate passenger and mail services within the US. Northwest Airways flew at least nine aircraft, introducing them on their Chicago-Minneapolis/St Paul route CAM 9 from September 1928.[3] Other U.S. airlines to use the type for both passengers and cargo were Coastal Air Freight and Condor Air Lines.[4] Wien Alaska Airways used at least one H-45 on a route from Fairbanks to the western coast and on to Point Barrow.[5]

During 1930, Isthmian Airways used Hamilton floatplanes for their service linking the Atlantic to the Pacific between respectively Cristóbal, Colón and Balboa in the Panama Canal Zone. The airline impudently claimed the 30-minute flight as the "fastest transcontinental service in North America".[6]

One H-47 (originally built as an H-45) was impressed by the United States Army as a UC-89 in 1942.[7] It was found unsuitable for Army work and was struck off charge in August 1943.[8]

It was a featured aircraft in Howard Hawk's 1939 "Only Angels Have Wings" flying mail for "Barranca". The flying scenes were fake; however, the aircraft was used in ground scenes. The movie prop model (or one of them) survives.

Variants

H-45 Wasp powered, ~25 built.

H-47 Hornet powered, 20 built.

H-47 Special 525 hp (390 kW) Wright Cyclone powered, span extended to 60 ft 5 in (18.4 m). One built.

UC-89 Single impressed aircraft.

Survivors

One H-47 remains flyable. N879H was auctioned after restoration in January 2010 and flew at the Oshkosh meeting in the Summer of 2010.[9]

Operators

 United States
 Peru

Specifications (H-47)

Data from aerofiles[2]

General characteristics
  • Crew: two
  • Capacity: six passengers
  • Length: 34 ft 8 in (10.57 m)
  • Wingspan: 54 ft 5 in (16.59 m)
  • Powerplant: 1 × Pratt and Whitney R-1690 Hornet 9-cylinder air cooled radial, 525 hp (391 kW)

Performance

  • Maximum speed: 145 mph (233 km/h; 126 kn)
  • Cruise speed: 125 mph (109 kn; 201 km/h)
  • Range: 600 mi (521 nmi; 966 km)

References

  1. ^ Joe Christy, LeRoy Cook. American Aviation. p. 110. 
  2. ^ a b c d e H-45 & H-47 in aerofiles
  3. ^ Davies, 1998, p.127
  4. ^ Davies, 1998, p.126
  5. ^ Wien Alaska Airways H-45
  6. ^ Davies, 1998, P.151
  7. ^ Fahey, James C.,US Army Aircraft 1908-1946, 1946. Ships and Aircraft. New York. p.27
  8. ^ UC-89
  9. ^ H-47 at Oshkosh 2010
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.