ArticlesMotor classes

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)