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Advanced Research Projects Agency<br />

(DARPA) criteria for micro UAVs include<br />

a size of less than 15 cm, a mass of 100 g<br />

or less, a payload of 100 g, a range of 1-10<br />

km, endurance of 60 mins at an altitude<br />

of less than 150 m fl ying at 15 m/s.[9]<br />

A second observation from the table is<br />

that where the mass of the vehicle is less<br />

than 150 kg their use and operations are<br />

governed by local and national regulations.<br />

This is because these types of vehicles are<br />

considered to be in the ‘model aircraft’ class<br />

of vehicles in the U.K., U.S., and Australia<br />

and hence may not require certifi cation<br />

standards similar to those of manned aircraft.<br />

A third observation is that tactical UAVs<br />

that include special task UAVs and<br />

Table 1. Small satellites and UAVs: Classifi cation table<br />

Weight<br />

classifi cation<br />

group<br />

1<br />

1<br />

1<br />

Civil category<br />

Molecular / femto<br />

satellites molesat<br />

Pico satellites<br />

picosat<br />

Nano satellites<br />

nanosat<br />

Wet mass<br />

(incl. fuel) kg<br />

Regulation<br />

Broad Military<br />

Equivalent<br />

0.001 – 0.1 ? ?<br />

0.1 – 1.0 ? ?<br />

1 Small aircraft 0 - 20 National CAA<br />

2 Light UAV >20 - 10 -

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