An aerial bomb is a type of explosive weapon intended to travel through the air with predictable trajectories, usually designed to be dropped from an aircraft. Aerial bombs include a vast range and complexity of designs, from unguided gravity bombs to guided bombs, hand tossed from a vehicle, to needing a large specially built delivery vehicle; or perhaps be the vehicle itself such as a glide bomb, instant detonation or delay-action bomb. The act is termed aerial bombing. As with other types of explosive weapons aerial bombs are designed to kill and injure people and destroy materiel through the projection of blast and fragmentation outwards from the point of detonation.
Early bombs 
In 1912, during the First Balkan War, Bulgarian Air Force pilot Christo Toprakchiev suggested the use of aircraft to drop "bombs" (called grenades in the Bulgarian army at this time) on Turkish positions. Captain Simeon Petrov developed the idea and created several prototypes by adapting different types of grenades and increasing their payload.
On 16 October 1912, observer Prodan Tarakchiev dropped two of those bombs on the Turkish railway station of Karağaç (near the besieged Edirne) from an Albatros F.2 aircraft piloted by Radul Milkov, for the first time in this campaign.
After a number of tests, Petrov created the final design, with improved aerodynamics, an X-shaped tail, and an impact detonator. This version was widely used by the Bulgarian Air Force during the siege of Edirne. A copy of the plans was later sold to Germany and the bomb, codenamed "Chataldzha" ("Чаталджа"), remained in mass production until the end of World War I. The weight of one of these bombs was 6 kilograms. On impact it created a crater 4-5 meters wide and about 1 meter deep.
Technical description 
Aerial bombs typically use a contact fuze to detonate the bomb upon impact.
See also 
Types of aerial bomb:
- Millbrooke, Anne (2006). Aviation History. Jeppesen. pp. 1–20. ISBN 0-88487-235-1.
- Grant, R.G. (2004). Flight - 100 Years of Aviation. Dorling-Kindersley Limited. p. 59. ISBN 9780751337327.
- Who was the first to use an aircraft as a bomber? (in Bulgarian; photographs of 1912 Bulgarian air-dropped bombs)
- A Brief History of Air Force Scientific and Technical Intelligence
|Wikimedia Commons has media related to: Air-dropped bombs|