World Library  
Flag as Inappropriate
Email this Article

Bfw M.21

Article Id: WHEBN0023654627
Reproduction Date:

Title: Bfw M.21  
Author: World Heritage Encyclopedia
Language: English
Subject: Messerschmitt, List of aircraft (B), Siemens-Halske Sh 12
Publisher: World Heritage Encyclopedia

Bfw M.21

Role Two-seat biplane trainer
National origin Germany
Manufacturer Bayerische Flugzeugwerke (BFW)
Designer Willy Messerschmitt
First flight 1928
Retired 1933
Number built 1

The BFW M.21 was a single-engined biplane trainer designed by Willy Messerschmitt for the German Ministry of Transport. It was one of only two biplanes Messerschmitt designed, neither reaching production.

Design and development

During 1927, following the success of his M 18 airliner tried to gain funding from the Baverian government; because the latter were already subsiding BFW (Bayerische Flugzeug-Werke) they pressed for an arrangement whereby Willy Messerschmitt joined BFW on the understanding the company produced only his designs.[1] During these negotiations, completed on 8 September 1927, the Ministry of Transport put pressure on Messerschmitt to produce military aircraft. This led to the only two biplanes Messerschmitt ever designed, the first of which was the BFW M.21, otherwise known as the Messerschmitt M 21.

It was a two-seat single-engined trainer of single bay biplane layout.[2] The wings, which folded for transport had parallel chord, no sweep and very little stagger and there were ailerons on both planes. The upper wing had a rounded cut out for improved visibility from the rear cockpit; the forward cockpit was under the wing. The fuselage was square sided with triangular upper decking behind the open cockpits and it tapered to the rear, making the generous fin and rudder appear even more prominent. A conventional single axle plus tail skid undercarriage was fitted.

The M.21 was powered by an uncowled radial engine, either the 96 hp (72 kW) Siemens Sh 11 (M.21a) or the 125 hp (93 kW) Sh 12 (M.21b) driving a two-bladed propeller.[2] It first flew in 1928 but was not accepted for production, so only one was built.[3] This example, civil registered as D-1566 flew until 1933 with DVS GmbH, the German sport flying association.

Specifications (M.21b)

Data from Smith 1971, p. 22

General characteristics
  • Crew: 2
  • Length: 7.30 m (23 ft 11½ in)
  • Wingspan: 10.00 m (32 ft 9¾ in)
  • Height: 2.80 m (9 ft 2¼ in)
  • Empty weight: 480 kg (1,0588 lb)
  • Gross weight: 740 kg (1,32 lb)
  • Powerplant: 1 × Siemens-Halske Sh 12 7-cylinder air cooled radial, 93 kW (125 hp)


  • Maximum speed: 156 km/h (97 mph)
  • Range: 600 km (373 miles)



External links

Images and unsourced data
Unsourced data on M.21a
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 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.