空中鋼環

空中鋼環（）是一種懸掛於天花板的圓形鋼製器材（類似於呼拉圈），馬戲團表演者會在上面表演空中特技。它可以是靜止的、轉動的、擺動的。

空中鋼環或是空心或是實心的。較輕的鋼環在轉動起來比較容易；一旦一個實心的鋼環得到動力的時候，它會保持轉動更久。有時空中鋼環表演者會配有橫木、手環、腳環以幫助表演。

腳註
參考資料

• [https://web.archive.org/web/20140419013725/http://www.circusbyus.com/Aerial-Lyra-Hoop Circus By Us Different Lyra Types]
• [https://web.archive.org/web/20141207161526/http://www.simplycircus.com/Equipment_and_Rigging/Circus/Aerial_Hoop] simplycircus.com
• [https://web.archive.org/web/20160304023121/http://community.simplycircus.com/tutorials/aerial/lyra.htm Simply Circus: Lyra Resource Page]
• [https://web.archive.org/web/20160410060413/http://community.simplycircus.com/tutorials/aerial/aerial_arts_faq.htm Simply Circus: Aerial Arts FAQ]
• [https://web.archive.org/web/20140131140047/http://www.fedec.eu/resources.1637.html Basic Circus Arts Instruction Manual: Chapter 8 - "Manual for Safety and Rigging."] [PDF, 3.3 MB] European Federation of Professional Circus Schools (FEDEC), 2008.
• [http://www.aerialrigging.org/Rigging%20Army%20FM5-125%201995.pdf FM 5-125: Rigging Techniques, Procedures, and Applications.] [PDF, 3.6 MB] US Army, 1995.
• Steven Santos. [https://web.archive.org/web/20170224212203/http://community.simplycircus.com/powerpoint/Rigging%20I.ppt Simply Circus: "Rigging I."] [Powerpoint presentation, 572 KB]
• Sharon McCutcheon, Geoff Perrem. Circus in Schools Handbook. Tarook Publishing, 2004. (ISBN 0-9756874-0-9)
• Hovey Burgess, Judy Finelli. Circus Techniques. Brian Dube, 1989. (ISBN 0-917643-00-3)
• Carrie Heller. Aerial Circus Training and Safety Manual. National Writers Press, 2004. (ISBN 0-88100-136-8)
• Shana Kennedy. Aerial Skills Illustrated 2007. Project 630570 at Lulu.com, 2007.
• Jayne C. Bernasconi and Nancy E. Smith. Aerial Dance. United States: Human Kinetics, 2008. (ISBN 0-7360-7396-5) [http://books.google.com/books?id=yC-5S4Rt8kUC View at Google Books]
• Elena Zanzu, M.A. Il Trapezio Oscillante: Storie di Circo nell'Aria. (The Swinging Trapeze: Histories of the Circus in the Air.) Bologna University, Italy, 2004-2005. Language: Italian.
• Rebekah Leach and Julianna Hane. The Aerial Hoop Manual Volume 1. [http://www.aerialdancing.com AerialDancing.com]

外部連結

• [https://web.archive.org/web/20160410060413/http://community.simplycircus.com/tutorials/aerial/aerial_arts_faq.htm Aerial Arts FAQ] (From [http://www.simplycircus.com Simply Circus])
• [https://web.archive.org/web/20160304023121/http://community.simplycircus.com/tutorials/aerial/lyra.htm Lyra Tutorials Page] (From [http://www.simplycircus.com Simply Circus])
• Coggs' Circus Q/A (Lyra): [https://web.archive.org/web/20160305214439/http://www.coggscircus.com/questions-and-answers/]
• [http://rebekah-burke.com U.S. Aerial Lyra Champion 2015] (From [http://www.rebekah-burke.com Rebekah Burke] )
• [http://frobzwiththingz.livejournal.com/20335.html#cutid6 This article] articulates how someone built an aerial hoop-- the key tool is a hydraulic pipe bender.