Any RN-24/RN-28 tutorials ?

[Elefant1301]

Hi,

 

Considering I have now managed to understand the flying and AA mode of the Mig-21, being quite confident with this marvelous aircraft, I wanted to take a step further and try the AG mode.

The included tutorials in the module are just perfect but I didn't find any about the use of the PBK-3 device and the tactical nuclear bombs RN-24 and RN-28.

 

Do you know of any around ? Maybe youtube or in this forum ?

 

Thanks in advance,

[MBot]

I can't comment on the correct switchology of the PBK-3 at the moment, but here is my suggestion on tactical employment. Since the MiG-21bis has no special equipment to aid in aiming, I use the over-the-shoulder toss variant. Approach the target at ground level with 1000 kph. When directly above the target, pull up with steady 5g. It is very important to keep zero bank at 5 g throughout the entire pull maneuver. Once you go through 115° pitch, release the weapon. Continue with your maneuver until you have completed a 3/4 loop, then level out and escape with maximum speed. When the weapon impacts the target, you will already be at a safe distance of 10-15 km.

[Elefant1301]

Thanks.

How do you release the weapon ? What switch do you use ?

What about arming the device before the launch ?

 

I tried a similar approach than yours yesterday (after having seen a very interesting drawing on a Belgian website) but my RN-28 desperatly dig a hole in the ground without detonating after a nice parabolic trajectory. :-)

[MBot]

First you have to set up your normal A-G systems:

1. Weapon Mode switch to Ground.

2. ASP Mode to Bombardment.

 

Then the PBK-3 from left to right:

1. Emergency Jettison: Keep down, not needed for tactical drop. Switching this up will jettison the weapon.

2. Emergency Jettison Armed: Keep down, not needed for tactical drop. Switching this up will detonate the weapon when 1. is used.

3. Tactical Jettison: Switch this up, this will arm the weapon for a tactical drop.

4. Special AB: This switch determines whether you will drop the special weapon or any other of your A-G weapons when you press pickle on your stick. Move up for dropping the nuke.

5. Brake Chute: This would activate the chute of the bomb. Not implemented, you will always drop without chute.

6. Detonation Air/Ground: This would select a ground or air burst. Not implemented, the weapon will always detonate in a ground burst.

7. With everything set, pressing the pickle on your stick will drop the weapon.

 

 

I did take some picture a while ago:

 

 

Everything set up for drop. Aimpoint is the control tower ahead.

 

 

 

Commencing 5 g pull up directly above the aimpoint. I am a little low on Gs here.

 

 

 

Release of the weapon at about 115° pitch.

 

 

 

Aircraft reaches apex at 3000m above target.

 

 

 

Weapon reaches apex at 4300m above target, 20 seconds after release.

 

 

 

Weapon about to impact 50 second after drop, 470m from aimpoint.

 

 

 

Distance of delivery aircraft to detonation is 13 km.

[Elefant1301]

Exactly what I needed.

A big thank you.

[1.JaVA_Platypus]

That´s impressive :)

[JorgeIII]

Toss bombing works pretty good. Just change the inicial climbing point from 7 km to 9km of the target zone.Toss Bombing it safer an usually more practical than the above "over the shoulder" release. You will be almost 10 km from the target área at its air defenses (if they are over the target), this will give you preciuos time before releasing the Bomb. You only need about 10 second to climb from ground level cover to 1500 m and release the nuke. Even if you dont have ground cover for part of the climbing Sams will take longer to lockon and reach you.

Some nice info from Mig-21 by Alexandre Mladenov:

 

NUCLEAR FIGHTERBOMBERS

 

There were several MiG-21 variants that featured dedicated subvariants

with added-on nuclear capability, distinguished by the letter N

(derived from the word Nositel – carrier [of a nuclear bomb]) in their

type designation. The MiG-21S’ nuclear-capable derivative bore the

Type 95N designation; MiG-21SM – Type 95MT (or Type 15N); MiG-

21SMT – Type 50N; MiG-21M – Type 96N; MiG-21MF – Type 96FN; and

the MiG-21bis – Type 75N.

 

The nuclear-capable Fishbeds introduced dedicated wiring to enable

use of a single nuclear bomb carried on the centreline pylon, together

with a control panel in the cockpit, installed on the top of the fixed

windscreen frame. The control panel enabled the pilot to arm the bomb,

perform its emergency jettisoning and set the desired type of detonation

– airburst or upon impact with the ground. The Soviet Air Force’s threesquadron

fighter-bomber regiments, stationed in the 1970s and 1980s in

East Germany and some other East European counties, had one of their

component squadrons permanently equipped for the tactical nuclear

role, with the nuclear bomb’s control panel always installed. Ground

crews regularly practised fitting training rounds, while pilots practised

delivery profiles using standard practice bombs.

 

The nuclear bomb was designed for delivery in either level flight

or by the so-called toss-bombing method. The latter called first for

acceleration in ultra-level flight at low level to 1,050km/h, then a 45º

climb and release of the bomb at about 1,500m (4,920ft), which then

impacted the ground some 7km from the release point or detonated

in the air at low level in order to deliver a better blast wave

destructive effect on surface targets.

 

There was another, more precise derivative of the toss-bombing

method – the so-called over-the-shoulder release – which called for

acceleration in level flight to 1,050km/h at 100m (330ft) above the

terrain and then commencement of a looping manoeuvre. Bomb

release took place when the nose went just beyond the vertical, at a

106º pitch angle, and at an altitude of about 3,000m (9,840ft). In this

event, after release the bomb travelled on a ballistic trajectory, initially

going sharply upwards and then reversing downwards, hitting the

ground immediately beneath the release point. After release, the MiG-

21 pilot had 1–2 minutes to escape from the blast wave at full

afterburner before the bomb’s detonation, at a distance of some 10km.

 

The RN-28 bomb was the main nuclear weapon carried by Soviet

tactical aircraft in the 1970s and 1980s, superseding an earlier design

known as the RN-25. A low-yield weapon, the RN-28 was equipped

with a programmable control unit that allowed the type of desired

detonation – airburst or upon impact with the ground – to be set

before take-off, while the bomb’s yield was adjustable between 1 and

10 kilotons.

Edited March 21, 2015 by JorgeIII

[JorgeIII]

Mbot: good info and pics!

[Elefant1301]

Jorge, thanks for your input.

[finger]

I can't comment on the correct switchology of the PBK-3 at the moment, but here is my suggestion on tactical employment. Since the MiG-21bis has no special equipment to aid in aiming, I use the over-the-shoulder toss variant. Approach the target at ground level with 1000 kph. When directly above the target, pull up with steady 5g. It is very important to keep zero bank at 5 g throughout the entire pull maneuver. Once you go through 115° pitch, release the weapon. Continue with your maneuver until you have completed a 3/4 loop, then level out and escape with maximum speed. When the weapon impacts the target, you will already be at a safe distance of 10-15 km.

 

Ooops attention-PBK-3 is a bombing sight from MiG-23BN and it belonging

to sight complex SOKOL(FALCON)-23S, which was used on this fighter-

bomber.The MiG-21BIS has not this systém.

[Elefant1301]

What's the name of the switch box that commands the bomb ?

I thought it was a part of the PBK-3 system.

 

http://www.16va.be/page_control_boxes_eng.html

Edited March 22, 2015 by Elefant1301

[WildBillKelsoe]

I really hope ED takes away the nuke.

[Elefant1301]

I really hope ED takes away the nuke.

 

Why ?

[Elefant1301]

Ooops attention-PBK-3 is a bombing sight from MiG-23BN and it belonging

to sight complex SOKOL(FALCON)-23S, which was used on this fighter-

bomber.The MiG-21BIS has not this systém.

 

So what's the name of the switchbox that commands the bomb in the Mig-21 cockpit ?

[mytai01]

I really hope ED takes away the nuke.

 

There is no reason to be a protester in a simulator of a nuclear capable aircraft.:doh:

[WildBillKelsoe]

well I don't want the poor AI to develop an extra foot :D

[Mimes]

I really hope ED takes away the nuke.

 

Well, better late than never reply :)

 

Real world nukes = bad (Is it true that US was the only country in the world which dropped nukes onto civilian population?)

 

Sim world nukes = terrifyingly cool.

 

To remove a weapon from a sim just because of it's destructive power does not make sense. Then we might as well replace all the weapons with propaganda leaflet drop devices. They cause minimal damage to the environment, next to no physical damage to plants, animals and people, only severe damage to people's thinking... :)