Waiver Table

Experimental Waiver Table
(Estimated Maximum Flight Altitude)

3/27/2000

Find the matching motor class and airframe diameter. Rocket weight is with the motor.

Example:

5,000' Waivered Altitude
Clouds at 4,000'
4" Diameter, 4 pound rocket
Aerotech I195 motor - 426 Newton-seconds total impulse (33% I)

Use the 50% I table. According to the table the rocket will go less than 2900' and can be flown provided other factors are safe (thrust-to-weight ratio).

These tables may not apply to rockets with low Cd such as rockets with boattails.

1/4 pound = 4 ounces
1/2 pound = 8 ounces
3/4 pound = 12 ounces

NOTE: This is not an altitude prediction program like a flight simulator. It estimates the maximum altitude for a motor total impulse class, not precise altitudes for specific motors.

Use at your own risk. Dean Roth and WOOSH (NAR #558) assume no liability for use of this data.

100% F 80 Newton-seconds

Weight with Motor

Airframe
Diameter 0.25# 0.5# 0.75# 1# 1.5# 2# 2.5#

1.625" (38mm)
3000 3300 3000 2600 1700 1200 900

2.25" (54mm)
2000 2200 2100 2000 1500 1100 800

2.6
1700 1900 1900 1800 1400 1000

50% G 120 Newton-seconds

Weight with Motor

Airframe
Diameter 0.25# 0.5# 0.75# 1# 1.5# 2# 2.5# 3#

1.625" (38mm)
3200 4000 4100 3800 2900 2100 1600

2.25" (54mm)
2500 2900 3000 2900 2400 1900 1400

2.6
2300 2400 2400 2100 1700 1400

4
1500 1400 1200 1100 1000

100% G 160 Newton-seconds

Weight with Motor

Airframe
Diameter 0.5# 0.75# 1# 1.5# 2# 2.5# 3#

1.625" (38mm)
4700 5000 4800 3900 3000 2300 1800

2.25" (54mm)
3500 3600 3500 3100 2600 2100 1700

2.6
3000 3000 3000 2800 2300 1900 1500

4
1800 1800 1700 1600 1400 1200

50% H 240 Newton-seconds

Weight with Motor

Airframe
Diameter 1.5# 2.5# 3.5# 4.5# 5.5# 6.5# 7.5# 8.5#

2.6
3100 2800 2100 1600 1100

4
1800 1600 1300 1000

6
1100 1000 900

7.5

100% H 320 Newton-seconds

Weight with Motor

Airframe
Diameter 1.75# 2.75# 3.75# 4.75# 5.75# 6.75# 7.75# 8.75# 9.75#

2.6
4000 3900 3300 2600 1900

4
2400 2200 1900 1600 1300

6
1500 1400 1300

7.5

50% I 480 Newton-seconds

Weight with Motor

Airframe
Diameter 3# 4# 5# 6# 7# 8# 9# 10# 11# 12#

2.6
5000 4500 3800 3200 2600

4
3200 2900 2600 2400 2000 1800 1500 1300 1100

6
1700 1600 1500 1400 1200

7.5
1400 1300

100% I 640 Newton-seconds

Weight with Motor

Airframe
Diameter 3.2# 4.2# 5.2# 6.2# 7.2# 8.2# 9.2# 10.2# 11.2# 12.2# 13.2#

2.6
5500 5500 5000 4300 3700

4
3500 3300 3100 2800 2500 2300 2100 1900

6
2200 2200 2100 2000 1800 1700 1600 1400

7.5
1700 1600 1500

50% J 960 Newton-seconds

Weight with Motor

Airframe
Diameter 4.75# 5.75# 6.75# 7.75# 8.75# 9.75# 10.75# 11.75# 12.75# 13.75#

2.6
7400 6900 6200 5400 4800 4100

4
4400 4200 3900 3600 3300 2900 2600

6
2800 2800 2700 2600 2300 2200 2100

7.5
2200 2200 2100

100% J 1280 Newton-seconds

Weight with Motor

Airframe
Diameter 5# 6# 7# 8# 9# 10# 11# 12# 13# 14#

2.6
8000 8000 8000 8000 7000 6000

4
4600 4900 4900 4800 4600 4300 4100 3800 3500 3200

6
3000 3000 3000 3000 3000 2800 2700 2600 2500

7.5
2300 2300 2300 2300 2300 2300 2300 2300 2200

50% K 1920 Newton-seconds

Weight with Motor

Airframe
Diameter 8# 9# 10# 11# 12# 13# 14# 15# 16# 17# 18# 19# 20#

4
6600 6800 6800 6600 6400 6100 5800 5500 5200 4900 4600 4300 4100

6
4300 4300 4300 4300 4100 4000 4000 3800 3600 3500 3200

7.5
3400 3400 3300 3300 3200 3100 3000 2900 2800

100% K 2560 Newton-seconds

Weight with Motor

Airframe
Diameter 9# 10# 11# 12# 13# 14# 15# 16# 17# 18# 19# 20# 21# 22#

4
8500 8600 8700 8800 8800 8500 8200 7900 7600 7300 6900 6600

6
5800 5700 5600 5400 5300 5200 5000 4800 4700

7.5
4400 4500 4500 4500 4300 4200 4100 4100 4100 3900 3800

50% L Newton-seconds

Airframe
Diameter 8# 9# 10# 11# 12# 13# 14# 15# 16# 17# 18# 19# 20#

4

6

7.5

100% L 5120 Newton-seconds

Weight with Motor

Airframe
Diameter 17# 19# 21# 23# 25# 27# 29# 31# 33# 35# 37# 39#

4

6
7600 7800 8000 8100 8300 8300 8100 8000 7600 7300 7000 6700

7.5
6200 6400 6500 6600 6600 6500 6300 6200 6100 6000 5800 5600