UKRA Minimum Site Dimensions Table

The launch site should have the following minimum dimensions (i.e. the launch position must be at least half the given distance from the edge of the launch site).
Additionally the minimum site dimension should be equal to or greater than the predicted maximum altitude of the highest flight being made.
The largest of these two dimensions should be used

Total Impulse of all Motors (Newton Seconds)

Equivalent Motor Type

Minimum Site Dimensions in Meters (ft)

Minimum Site Dimensions in Km (Miles)

0.00 - 1.25

¼A ½A

15 (49)

0.015km (16yds)

1.26 - 2.50

A

30 (98)

0.03 (33yds)

2.51 - 5.00

B

60 (197)

0.06 km (66yds)

5.01 - 10.00

C

120 (394)

0.12 km (130 yds)

10.01 - 20.00

D

150 (492)

0.15 km (164 yds)

20.01 - 40.00

E

300 (984)

0.3 km (328 yds)

40.01 - 80.00

F

300 (984)

0.3 km (328 yds)

80.01 - 160.00

G

300 (984)

0.3 km (328 yds)

160.01 - 320.00

H

450 (1476)

0.5 km (492 yds)

320.01 - 640.00

I

760 (2493)

0.8 km (1⁄2 Mile)

640.01 -
1280.00

J

1600 (5,249)

1.6 km (1 Mile)

1,280.01 - 2,560.00

K

1600 (5,249)

1.6 km (1 Mile)

2,560.01 - 5,120.00

L

3200 (10,498)

3.2 km (2 Miles)

5,120.01 - 10,240.00

M

4700 (15,420)

4.7 km (3 Miles)

10,240.01 - 20,480.00

N

6445 (21,145)

6.5 km (4 Miles)

20,480.01 - 40,960.00

O

8045 (26,394)

8.0 km (5 Miles)