UKRA Safe Distance Tables

All persons, except those required for the launch of a rocket must be kept at
least the given minimum distance from the Rocket Motor during / after ingiter
installation.

Total Impulse of all Motors (Newton Seconds)

Equivalent Motor Type

Minimum Distance From Rocket with Single Motor in Meters (ft)

Minimum Distance From Rocket with Multiple Motors in Meters (ft)

0.00 -
1.25

¼A ½A

2 (7)

3 (10)

1.26 - 2.50

A

2 (7)

3 (10)

2.51 - 5.00

B

3 (10)

6 (20)

5.01 - 10.00

C

3 (10)

6 (20)

10.01 - 20.00

D

5 (16)

10 (33)

20.01 - 40.00

E

7 (23)

15 (50)

40.01 - 80.00

F

10 (33)

20 (66)

80.01 - 160.00

G

10 (33)

20 (66)

160.01 - 320.00

H

15 (49)

30 (98)

320.01 - 640.00

I

45 (148)

60 (197)

640.01 -
1280.00

J

45 (148)

60 (197)

1,280.01 - 2,560.00

K

60 (197)

90 (295)

2,560.01 - 5,120.00

L

90 (295)

150 (492)

5,120.01 - 10,240.00

M

90 (295)

150 (492)

10,240.01 - 20,480.00

N

150 (492)

300 (984)

20,480.01 - 40,960.00

O

150 (492)

300 (984)