.a. Flashcards
Elements of Bombing Theory
Aerodynamic Properties
Drag - opposes inertia
Lift - opposes gravity
Physical Properties
Inertia
Gravity
IP
Timing Starts
Switch from Nav steering to Bomb steering
TTG in seconds
TTG = TTI – TOF
PP to BRP
Time Over Target (TOT) in Seconds
TOT = TTG + TOF
Actual Range (AR)
Ballistic distance to target
AR = Whole Range – L (bomb trail)
Bomb Trail
Aircraft separation from weapon at impact
Virtual Impact Pt
Aircraft position at Target Impact
Whole Range Math
Whole Range (WR distance) = TOF x (B-2A) GS x 1.6878 WR = BRP to VIP
.Crosstrail
The term for the lateral displacement is called cross trail.
Wind effects bomb flight
Must drop upwind
Desired Point of Impact (DPI) Desired Mean Point of Impact (DMPI) Initial Point (IP)
, the IP is where the B-2 navigation switches from the INS to the SMP
What impacts delivery
NAV System
Radar Aiming
CDI Deflection
Aircrew
MK-82
MK-83
MK-84
500lb
1000lb
2000lb
Takes 100% of buffer from IP to TGT
Full Scale Deflection is 3040’
Greater than 3000 will not release
Fuze Explosive Train
primer sets off main explosive
provides safe storage
primer…optional delay..detonator..booster.. and main charge
Fuze Detonator out of Line
Fuze Safety Block arrangement
Fuze Electrical Safing
One element is out of line with other element
block insterted between the striker and the explosive train
Electrical power is solated
Mission Independent Files
Ballistics
Zonal Winds
C Constants
Wpns Charact
Msn Dependent
Weapons Inventory
Target Sequence
Target Data
Wpns doors Synchronized by Power Drive Controller
Door Operating Limits
Single weapon from RLA doors open - 65°
Rack weapons require both doors open - 90°
Operating Doors Affects Pitch and Airspeed
Release is inhibited if doors are opened to less than the required position
Fast acting - 3.5 sec / 65 degrees - 5 sec / 90 degrees
Can’t rotate from station 8 to station 1 due to a mechanical stop because the umbilical’s have reached their limit.
(A) BRA can hold 20x 500lb class
(B) and 9 each for larger
70 seconds for WIU to integrate
2 Racks, Fore and Aft, in Each Weapons Bay
Can Be Loaded With a Mix of Weapons
Cannot mix guided with unguided
. What type of malfunction will trigger an MMS DEGRD Advisory?
MMS System Malf
What switches are located on the consent panels?
CONV REL ENBL, UNLK ENBL, and PA ENBL
The weapons display is selected from the _______ display.
status
The PIP was sequenced in NAV guidance, aircraft will fly __________ to the release point.
req’d track
The MK-84 is classed as a ______ pound general purpose bomb.
2000
The _______ and ______ are free-fall nuclear bombs available for employment on the B-2A.
B28-0, B83-0
B43-6, B61-7
B43-6, B28-0
B61-7, B83-0
B61-7, B83-0
What weapon is not carried on a B-2 RLA?
GBU-38
GBU-28
MK 84 LDGP
AGM-154
GBU-38
What weapon can not be carried on a B-2 Rack?
MK 82 Air
MK 84 LDGP
M117R
MK 62 QS Mine
MK 84 LDGP
. What arming devices are used with mechanical fuzes and fuze munition units (FMU)
armining wires and lanyards
- For proximity FUZED weapons, the detonation altitude must be added to the minimum release altitude for safe escape.
a. True
b. False
true
The CBU-87/B dispenser, SUU-65/B uses _______ for operation.
an impact FUZE
a timer FUZE
a proximity sensor
b or c
b or c
. For proximity FUZED weapons, the detonation altitude must be added to the minimum release altitude for safe escape.
a. True
b. False
t
A fuze is a device used to initiate bomb detonation or dispenser operation. How are fuzes initiated ?
A combination of initiators
impact
proximity
time
ins/gps
. Name two common safety features that prevent fuze arming while the fuze is in a safe condition.
Detonator out of line
and
safe block safe
Fin
Stabilizes bomb
Two types
Low drag
High drag
Retarded
Ballute
fin-low drag
Conical shaped
Light metal
Physical condition important
High drag
Retarded
Held by retention bands
Wire / lanyard releases retention band
Air loads open fins
Ballute
Low altitude, high airspeed release
Generally, in manual bombing, locked ballistics flying faster than planned produces ________ bombs.
short
good
long
bad - random azimuth
long
. In a fully automatic system (B-2), you must fly the preplanned bomb run velocities and altitudes to ensure a “SHACK” bomb strike.
True
False
false
In a fully automatic system, after an automatic altitude measurement the TOF value is lower than expected value. This will produce a ________ bomb.
long
good
big
short
good
In a fully automatic system (B-2), you must fly the preplanned bomb run velocities and altitudes to ensure a “SHACK” bomb strike.
faLSE
. In a fully automatic system, after an automatic altitude measurement the TOF value is lower than expected value. This will produce a ________ bomb.
long
good
big
short
GOOD
- To convert knots to ft/sec, multiply ________ .
TAS x TF/60
TAS x 1.6878
GS x 1.6878
GS x TF/60
GS x 1.6878
. In automatic systems, flying faster than planned TAS to make the required Time on Target Control Point will produce a _______ bomb.
GOOD
. Heading errors cause bomb delivery errors when using OAPs.
True
False
TRUE
- Among the tasks the SMP performs are
a. supervision, BDA, threat assessment, and mission scoring.
b. supervision, mission data management, BDA, and IP-to-target navigation.
c. supervision, stores CG computation, mission scoring, and radar deliveries.
d. stores CG computation, BDA, mission scoring, and mission data management.
d. stores CG computation, BDA, mission scoring, and mission data management.
- Which cockpit panels/controls are hardwired to the WIU and SMRTs in addition to being connected to the stores MUX bus?
a. Jettison panel and ground power panel
b. Jettison panel and manual release button
c. Jettison panel and consent panel
d. Consent panel and manual release button
c. Jettison panel and consent pane
- Which SMOFP files can be modified by the aircrew?
a. Target data, inventory, classified constants
b. Target data, classified constants, weapons characteristics
c. Classified constants, inventory, target sequence
d. Target data, inventory, target sequence
d. Target data, inventory, target sequence
- The jettison panel is hardwired to SMRTs _____ and _____.
- The consent panels are hardwired to SMRT number _____.
1,2
5
WPNS BAY GND CONTROL PANEL
ROTATES RLAS AND OPERTES DOORS
GCP ENABLE
must be enabled for GCP to operate wpns bay doors
selective has jettison precedense
pdu enabe switch allow the weapons bay doors to be operated hydraulically witht he entry door open
landing gear pslu must show wow for gnd panel to work
flight/dbl/gnd switch is not functional in flight
SMP uses the target file data to select wpns for target
target sequence date provides the release sequence order to the smp
wind corrected release point around the TGT
bomb release line/boming relsover locus
designated point of impact is
desired impact point
