Aero Vodochody (commonly referred to as Aero; Vodochody is a location) is a Czech (previous Czechoslovak) aircraft company, active from 1919, notable for producing the L-29 Delfin, L-39 Albatros, L-59 Super Albatros, and the L-159 Alca military light combat jet.
A biplane is a fixed-wing aircraft with two main wings stacked one above the other.
Czechoslovakia, or Czecho-Slovakia (Czech and Československo, Česko-Slovensko), was a sovereign state in Central Europe that existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until its peaceful dissolution into the:Czech Republic and:Slovakia on 1 January 1993.
The leading edge is the part of the wing that first contacts the air;Crane, Dale: Dictionary of Aeronautical Terms, third edition, page 305.
The Maybach Mb.IVa (written in German sources as Mb IVa, without a dot) was a water-cooled aircraft and airship straight-six engine developed in Germany during World War I by Maybach-Motorenbau GmbH, a subsidiary of Zeppelin.
Prague 19, also known as Kbely (German Gbel), is a municipal district (městská část) in Prague.