How Smart Bomb Works? JDAM Precision Guided Munition

AiTelly
310.5K views • February 10, 2024

How JDAMS Bombs Work?

JDAMS are based on Dumb Bombs one of them is this Mark 82 low-drag general-purpose bomb, part of the United States Mark 80 series.

Let’s take a look inside this most common Dumb Bombs

At the front is the Nose fuse well. all this is joined by a fuze Conduit
Sandwiched this rod in the Middle is the Explosive-filled 500-pound warhead which translates to around (227 kg).
This channel rod is connected to a Tail Fuze.

Just a reminder this is an unguided low-drag general-purpose bomb, part of the United States Mark 80 series of Bomb

Let's take a look at how this works in a super simplified animation.
This bomb is usually dropped from a bomber or an F-18 fighter jet.
When released, it falls just like a normal dumb weapon
As stated, the bomb can be fitted with a nose fuze, a tail fuze, or both simultaneously.





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0:00 in this video we'll Del into the
0:01 fascinating process of transforming an
0:03 unguided bomb into a Precision guided
0:05 smart Weapon by integrating a
0:07 sophisticated guidance system onto its
0:09 tail but how exactly does a wingless
0:12 weapon and lacking propulsion mechanisms
0:14 manage to navigate to its designated
0:16 Target to tackle this intriguing
0:18 question we'll draw upon the analogy of
0:20 a skydiving buddy to provide a relatable
0:22 comparison aiding in your comprehension
0:24 of this complex process so stay tuned
0:27 and don't miss a beat J dams and slide
0:30 bonds are usually are base on this Mark
0:32 80 series let's take a look inside this
0:34 most common dumb weapon system at the
0:37 front is the nose Fus well all joined by
0:39 a fuse
0:40 conduit sandwiched in the middle of this
0:43 Rod is the explosive filled 500lb War
0:45 head which translates to around 227
0:49 kg this channel Rod is connected to a
0:52 tail fuse just a reminder this is an
0:54 unguided low drag general purpose bomb
0:57 part of the United States Mark 80 Series
0:59 in weap
1:00 system let's take a look at how this
1:02 works in a super simplified animation
1:05 this bomb is usually dropped from a
1:06 bomber or an F-18 fighter jet when
1:09 released it falls just like a normal
1:10 dumb weapon as stated the bomb can be
1:13 fitted with a nose fuse a tail fuse or
1:15 both
1:17 simultaneously upon hitting the ground
1:19 the frontal fuse activates burning the
1:21 fuse conduit from the front to the back
1:23 thus creating a huge
1:24 explosion the alternative option is
1:26 using the tail fuse FM u39
1:30 this is usually used for Delayed Action
1:31 and is set by the
1:33 pilot when it hits the target the weight
1:35 of the bomb will penetrate the concrete
1:37 surface of a building the fuse activates
1:39 and the conduit Rod which creates the
1:41 500 lb explosion after a few seconds as
1:44 programmed this can create a lot of
1:47 damage considering its small $4,000
1:49 price
1:51 tag let's delve into the process of
1:53 upgrading this into a guided weapon
1:56 first the transformation Begins by
1:57 removing the low drag tail Paving the
2:00 for the installation of the guidance
2:01 section within this new configuration
2:04 nestled inside the tail we discover the
2:06 intricacies of its guidance system here
2:09 the inertial guidance kit collaborates
2:10 seamlessly with a military-grade global
2:13 positioning unit ensuring precise
2:15 navigation towards its intended target
2:18 alongside these components one can find
2:19 the adapter ring facilitating the
2:21 attachment of the Telemetry antenna
2:23 crucial for transmitting data as well as
2:25 the encryption key battery safeguarding
2:27 sensitive information entering deeper
2:30 into its structure we encounter the
2:32 thermal batteries vital for powering the
2:34 system and the composite fins
2:36 strategically positioned to Aid in
2:37 directing the missile towards its
2:39 objective these fins meticulously
2:42 controlled by gears within maneuver with
2:44 Precision responding to commands to
2:46 adjust the trajectory with accuracy
2:49 however the evolution of this weapon
2:51 doesn't halt here it can also be added
2:53 with a laser guided kit in the front
2:55 elevating its intelligence quotient
2:56 further to increase the range they even
2:59 added wings called called the Glide
3:00 bombs or J Dam extended range or Dam ER
3:03 as they called it the wing kit will
3:05 triple the range of J Dam from 15 M to
3:07 46 Mi which translates to around 75 km
3:12 for the same
3:14 accuracy let's take a look at how this
3:16 jdam works step one target coordinates
3:19 can be loaded into this aircraft before
3:21 takeoff and manually altered by the air
3:23 crew and flight prior to weapon release
3:26 step two when dropped the J Dam switches
3:28 to its internal guidance or GPS in
3:31 simpler terms it uses military-grade
3:33 satellites to pinpoint its exact
3:35 locations if needed and provides real
3:38 all-weather capability since GPS is not
3:40 affected by rain clouds fog or smoke and
3:44 short doesn't miss its Target provided
3:45 if it's
3:46 stationary step three remember those
3:49 internal batteries and control gears the
3:52 inertial guidance clock keeps track of
3:54 its position and controls the gears of
3:55 the fins so when the J dam is off course
3:58 the fins at the back will red direct or
4:00 reconfigure according to the GPS or
4:02 inertial guidance clock to maintain its
4:06 course but how does it turn when it does
4:08 not have wings let's take for example
4:10 this guy going skydiving for his
4:12 vacation skydivers will use the surface
4:15 area of their arms legs and torso to
4:17 change the direction and orientation of
4:18 their body in the air just as shown in
4:21 the
4:22 animation my point is if a human can
4:24 turn using body surface now imagine
4:26 having an aerodynamic weapon that weighs
4:29 around 500 100 lb Fallen under Gravity a
4:32 slight deflection on the tail
4:34 considering the amount of air pressure
4:35 will help it direct to its designated
4:38 Target the jdam can also be upgraded to
4:40 this small diameter bomb called of
4:43 gsdb developed by both the American
4:45 company Boeing in collaboration with
4:47 Saab from Sweden basically they attach
4:50 the M26 rocket to this existing
4:53 gb39 and re-engineered the whole GPS and
4:56 Laser guidance kit to Glide to its
4:58 Target the has a length of 3.91 M which
5:02 translates to 12.8 ft with a diameter of
5:06 241.7 mm it has an overall weight of
5:22 272.50 a piece comparing with this M31
5:27 gmlrs missile it costs a staggering
5:30 $110,000 a pop and most importantly the
5:33 range of the GLS DB is around 81 Mi or
5:36 130 km which is double the range of this
5:40 M31 missiles that has a range of only
5:43 43.5
5:45 mil interestingly this was also used by
5:48 both the himars and this multiple launch
5:50 rocket system has animated in our recent
5:53 video besides its low cost it has the
5:55 ability to fire six missile all at once
5:58 and most importantly it can hit at any
6:00 angle giving it a strike capability over
6:02 the conventional artillery guns this
6:05 include the reverse slopes of any
6:07 mountains just like the animation shown
6:09 here it's 360° gives it an edge as it
6:12 could engage the enemy from every angle
6:15 this helps the Marines to engage the
6:16 oppositions in battle situation even if
6:18 they are flanked from the right left
6:20 front and back before we move into the
6:23 stepbystep process of how this works
6:25 let's examine the parts of the missile
6:27 in detail this is the M26 motor which
6:30 was used from the older unguided rocket
6:32 of the US Military and available in
6:35 abundance moving to the midsection is
6:37 the interstate
6:40 adapter at the top is the GBU or guided
6:43 Bond
6:44 unit these are the Glide Wings which
6:47 open up just like this commending a
6:49 wingspan of just 1.6 M which translate
6:52 to 5.2 ft let us closely examine the
6:55 parts of the GBU 39 this is the steel
6:58 penetrating casing cable cover inside it
7:01 lies this 250 lb unguided bomb which is
7:04 possibly the same jig Dam Warhead they
7:06 essentially repurposed this bomb used by
7:08 the Air Force and re-engineered it to
7:10 fit inside this
7:12 casing this is the arm and Generator or
7:15 unit
7:16 cover moving backward is the wing
7:18 assembly unit inside is the fuse well
7:21 with insensitive munition features at
7:24 the rear is the heavily engineered
7:26 anti-jamming GPS guidance kit also a
7:29 reminder this missile utilizes both GPS
7:32 and Laser
7:33 Guidance just below is the guidance unit
7:37 housing this bomb also houses a small
7:39 Mission computer as shown here closer to
7:42 it lies the thermal battery
7:45 unit lastly we have the tail unit that
7:47 aids in stabilizing the
7:50 missile let us examine how this
7:53 works step number one the himr or mlrs
7:58 truck receives data from higher commands
7:59 for the designated
8:01 Target step number
8:03 two the high Marsh truck will launch the
8:07 missile step number
8:09 three after reaching a desirable
8:11 altitude the GBU 39 and the bong would
8:14 head toward a Target just like they
8:15 would if they were dropped from a strike
8:17 aircraft such as the American F16 or the
8:19 Sab
8:22 gripon step four the GBU 39 will then
8:25 glide through terrain using the
8:26 anti-jamming GPS or could even be laser
8:29 guided to its
8:33 Target in a simulated Battlefield
8:35 environment this is how it might
8:38 work when an invading enemy is detected
8:40 the command and control station spots
8:42 the Convoy on their screen the
8:44 truck-based rocket launcher will then
8:46 open its roof and fire the desired
8:48 number of
8:53 missiles after reaching a suitable
8:55 altitude the GBU 39 will separate and
8:57 deploy its wings
8:59 it will Glide towards its multiple
9:01 targets either through GPS guem or laser
9:03 guided provided by a reconnaissance team
9:06 in this animation you can see that the
9:07 strategy is to destroy the main point of
9:09 entry to stop the Convoy and then proed
9:12 the target from the back to the
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