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Fuk Study > Rockets > Flashcards

Rockets Flashcards

1
Q

LAU-61

A

19 x 2.75 in rocket pod

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2
Q

LAU-61 C/A motor restriction

A

Mk 66 motors only

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3
Q

RIPPLE timing

A

40 millisecond interval

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4
Q

LAU-130

A

all metal, 19 x 2.75 in rocket pod

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5
Q

LAU-61 vs LAU-130

A

LAU-130 lacks thermal protective coating

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6
Q

LAU-68 D/A

A

7 x 2.75 in rocket pod

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7
Q

Rotary Stepper Switch

A

19 position due to taken from LAU-61

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8
Q

LAU-68 C/A and LAU-131/A

A

7 x 2.75 in rocket pod, lacks thermal protective coating

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9
Q

How may positions on LAU-131/A rotary stepper switch?

A

10

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10
Q

LAU-68F/A

A

all-metal extended length launcher (ELL), 7 x 2.75 in rkt pod

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11
Q

Is LAU-68F/A approved for shipboard use?

A

Yes, has the thermal protective coating.

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12
Q

Is the LAU-68F/A restricted by weight?

A

Yes, if outboard stores are greater than 355 lbs, then the LAU-68 stores cannot exceed 240 lbs. (The appendix and content in NATIP differ) 240 lbs restriction, straight up.

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13
Q

LAU-68F/A Shipboard Hot Tube Reloading?

A

NO!

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14
Q

LAU-68F/A Ashore Hot Tube Reloading?

A

Yep. Authorized.

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15
Q

Rocket Motor Components

A

“I pimp sisters nightly for fun” igniter, propellant grain, stabilizing rod, nozzle, fin assembly, firing contact disk/band.

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16
Q

How is it ignited?

A

28-Vdc distributed by launcher intervalometer to each tube firing contact

17
Q

How does the propellant burn and why?

A

Inside out, to minimize CG shifts

18
Q

WAFFAR

A

Wrap-around folding fin assembly (rocket)

19
Q

Mk66 Mod 2 WAFFAR

A

HERO susceptible, tubular stabilizing rod, Mk 125 Mod 5 igniter, and a 5-wire HERO filter strung internally through the rod.

20
Q

Mk 66 Mod 2 Avg Thrust

A

1,360 pounds for 1.1 secs

21
Q

Mk 66 Mod 2 approx. weight

A

13.65 lbs

22
Q

Mk 66 Mod 4

A

HERO safe, solid stabilizing rod, Mk311 igniter a set of filters in the igniter and a single filter under the nozzle contact band.

23
Q

M151

A

HE-FRAG, (2.3 lbs Comp B-4), 9.4 lbs, bursting radius=10 m, soft steel or cast iron

24
Q

M229

A

HE-FRAG, (4.8 lbs Comp B-4), 16.9 lbs,

25
Q

Mk 152 Mod 0

A

HE-FRAG, (2.1 lbs PBXN-110), 8.9 lbs, soft steel or cast iron

26
Q

WDU-4A/A

A

2,205 20 grain flechettes, armed at accel greater than 17.5 g’s, (assuming avg accel = 33 g’s, armed=1.2 secs), fires when decel below 11 g’s. 3 grams of M9

27
Q

WDU-4A/A Optimum employment and why?

A

1,200 m to 1,600 m. Because downrange travel is approx. 400-600 m, for a beaten zone of 80 x 80 meters. Optimum mil settings are 0 mils at 60 kts and -5 mils at 120 kts.

28
Q

How many tracers does the WDU-4A/A have?

A

3 tracers

29
Q

Mk 149

A

1,179 60 grain flechettes, firing pin is released which strikes a 55 mg PA515 Stab detonator, 3 grams of M9, optimum flechette pattern develops 150-250 meters after expulsion

30
Q

HE-FRAG Warhead

A

M151, M229, Mk152 Mod 0

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