They were small because then they were less noticeable for the German aircrafts
Passenger airplanes usually fly around 30,000-38,000 feet. Small aircrafts fly lower and military aircrafts can fly higher.
small
The man with a small parachute will fall faster.
Small particles move faster across the membrane.
small :)
Osmosis.
Gremlins, small elf-like creatures that caused mischief, were given the blame for mechanical problems on British aircrafts during WW2
small
active transport
transport
The main public transport in Venice is by various types of boat that can fit in the small waterways.