World Library  
Flag as Inappropriate
Email this Article

Cirrus Engine

Article Id: WHEBN0023921273
Reproduction Date:

Title: Cirrus Engine  
Author: World Heritage Encyclopedia
Language: English
Subject: Blackburn Aircraft, List of aircraft engine manufacturers, RWD 5, ADC Aircraft, Frank Halford, Fairchild 24, RWD 4, RWD 17, Pobjoy Airmotors, Saro Cutty Sark
Publisher: World Heritage Encyclopedia

Cirrus Engine

Cirrus Aero-Engines Limited
Industry Aero engines
Fate Bought
Successor(s) Cirrus-Hermes Engineering Company
Founded 1927
Defunct 1931
Key people Frank Halford

Cirrus Aero-Engines Limited was a British aircraft engine manufacturer, known for their line of four-cylinder air-cooled vertical inline engines for general aviation use. The company traded between 1927 and 1931.


Cirrus engines were originally built by ADC Aircraft until Cirrus Aero Engines Limited was formed in 1927. The company became Cirrus Hermes in 1931 when it was bought by the Cirrus-Hermes Engineering Company and later became the Cirrus Engine Section of Blackburn & General Aircraft Limited in 1934, and operated as a separate division until production ended in the post-World War II era.[1]

Cirrus's first product was the 90 hp (67 kW) Cirrus I, which passed its 50 hour type rating in 1925. It was the first air-cooled inline engine, a design that proved extremely popular for light aircraft. The basic layout was quickly copied by a number of other manufacturers. Later versions named the Cirrus II, and Cirrus III were produced each with slightly greater displacement, and power.

After purchase by Hermes the Cirrus Hermes I, II, III & IV were produced ranging in power from 105 hp to 140 hp depending on type. The later Cirrus engines were designed to run inverted.[2]


See also




  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.

External links

  • , June 1929
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, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for 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 Project Gutenberg 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.