Classificazione motori per razzimodellismo I motori per razzimodellismo sono classificati con il valore dell'impulso totale designato con una lettera, da A (il più piccolo, ½A, ¼A, ⅛A) fino a O, il più grande. La classe A va da 1.26 Ns a 2.5 N·s, ogni classe successiva ha un valore doppio della precedente, per esempio classe B tra 2.51 a 5.00 N·s. Motori oltre la O sono al di fuori del campo amatoriale, e sono utilizzati da organizzazioni commerciali o governative.[1]
Esempio, la lettera M rappresenta un impulso totale compreso tra 5,120.01 e 10,240.00 N·s.
Impulsi secondo la classe
Classe
|
Impulsi totali (SI)
|
Impulsi totali (Sistema imperiale britannico)
|
Veicoli aerospaziali o Razzi
|
Regolamenti US
|
A |
1.26–2.5 N·s |
0.28–0.56 lbf·s |
|
|
B |
2.51–5.0 N·s |
0.56–1.12 lbf·s |
|
|
C |
5.01–10.0 N·s |
1.13–2.25 lbf·s |
|
|
D |
10.01–20.0 N·s |
2.25–4.50 lbf·s |
|
|
E |
20.01–40.0 N·s |
4.50–8.99 lbf·s |
|
|
F |
40.01–80.0 N·s |
8.99–17.98 lbf·s |
|
|
G |
80.01–160.0 N·s |
17.99–35.97 lbf·s |
|
|
H |
160.01–320 N·s |
35.97–71.94 lbf·s |
|
|
I |
320.01–640 N·s |
71.94–143.88 lbf·s |
|
J |
640.01–1,280 N·s |
143.88–287.76 lbf·s |
|
|
K |
1,280.01–2,560 N·s |
287.76–575.51 lbf·s |
|
|
L |
2,560.01–5,120 N·s |
575.51–1,151.02 lbf·s |
|
|
M |
5,120.01–10,240 N·s |
1,151.02–2,302.04 lbf·s |
|
|
N |
10,240.01–20,480 N·s |
2,302.05–4,604.09 lbf·s |
|
|
O |
20,480.01–40,960 N·s |
4,604.09–9,208.17 lbf·s |
|
|
P |
40,960.01–81,920 N·s |
9,208.18–18,416.35 lbf·s |
|
|
Q |
81,920.01–163,840 N·s |
18,416.35–36,832.70 lbf·s |
|
|
R |
163,840.01–327,680 N·s |
36,832.70–73,665.39 lbf·s |
|
|
S |
327,680.01–655,360 N·s |
73,665.40–147,330.79 lbf·s |
|
|
T |
655,360.01–1,310,720 N·s |
147,330.79–294,661.58 lbf·s |
|
|
U |
1,310,720.01–2,621,440 N·s |
294,661.58–589,323.16 lbf·s |
Apollo launch escape rocket |
|
V |
2,621,440.01–5,242,880 N·s |
589,323.16–1,178,646.31 lbf·s |
|
|
W |
5,242,880.01–10,485,760 N·s |
1,178,646.31–2,357,292.62 lbf·s |
|
|
X |
10,485,760.01–20,971,520 N·s |
2,357,292.63–4,714,585.25 lbf·s |
|
|
Y |
20,971,520.01–41,943,040 N·s |
4,714,585.25–9,429,170.49 lbf·s |
Delta II |
|
Z |
41,943,040.01–83,886,080 N·s |
9,429,170.50–18,858,340.99 lbf·s |
|
|
2Z |
83,886,080.01–167,772,160 N·s |
18,858,340.99–37,716,681.97 lbf·s |
|
|
3Z |
167,772,160.01–335,544,320 N·s |
37,716,681.97–75,433,363.94 lbf·s |
|
|
4Z |
335,544,320.01–671,088,640 N·s |
75,433,363.94–150,866,727.88 lbf·s |
|
|
5Z |
671,088,640.01–1,342,177,280 N·s |
150,866,727.89–301,733,455.77 lbf·s |
Space Shuttle SRB |
|
6Z |
1,342,177,280.01–2,684,354,560 N·s |
301,733,455.77–603,466,911.54 lbf·s |
|
|
Note
- ^ (EN) TRA website: Copia archiviata, su tripoli.org. URL consultato il 28 luglio 2014 (archiviato dall'url originale il 12 settembre 2009)..
Voci correlate
Collegamenti esterni
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