CZK - LR-122 (122-JROF-L, neřízená raketa)

LR-122 unguided rocket missile (122-JROF-L)
- Missile caliber: 122 mm
- missile length: 1940 mm
- missile weight: 47 kg (other sources say 46.25 kg)
- missile range (helicopter-to-ground): up to 4000 m
- warhead: shatterproof
- warhead weight: undetermined (it can be assumed that it was identical to the ground version)


LRM-122 (GRAD-L)
- calibre of the rocket launcher: 122.4 mm
- number of barrels: 4
- weight of empty rocket launcher: 55 kg (other sources say up to 61 kg)
- weight of fully armed rocket launcher: 247 kg
- length of the rocket launcher: 1550 mm
- width of the rocket launcher: 300 mm
- rocket launcher height: 350 mm (other sources say 355 mm)


Brief history
At the instigation of the CSLA leadership, a new four-barrel rocket launcher was developed, modified for launching 122 mm calibre unguided air-launched rockets against ground targets. The Trenčín design was based on the vz. 70 self-propelled rocket launcher and the 122-JROF unguided rocket. Compared to the ground version, several changes were made to the airborne version to allow the rocket launcher to be used on aircraft and helicopters. For example, the firing method was redesigned, the rocket motor was shortened, and the sensitivity of the impact igniter to small angles of incidence was increased. The development of the rocket launcher was completed by Konštrukta Trenčín in 1986.


According to witnesses, one of the firing tests took place in 1989 in the military area near Malacky. A Mi-24V helicopter was used to carry the missiles. The missiles being tested were sometimes subjected to large long-range and lateral scattering. The cause was the airflow from the rotor and some flight modes. During the tests, so-called "pumping" also occurred when the helicopter engines sucked in larger amounts of burnt gases from the fired missiles.


The LRM-122 rocket launcher was offered by Slovak companies at arms fairs as part of the armament of light combat aircraft. The Czech Army got rid of these missiles in 2004 when it offered them for auction in large quantities, under the designation 122-JROF-L.


Note
The illustration used is taken from the sources listed below.


Source
Zdeněk Vopat et al.: Konštrukta Trenčín, Magnet Press Slovakia, Bratislava 2000, ISBN 80-968327-8-6
LR-122 unguided aerial rocket with LRM-122 rocket launcher, prospectus VÚ 030, Prague, no date of issue
Missile LR 122, prospectus ZVS, s.p., Dubnica nad Váhom, SR, no date of issue

Internet
http://www.army.cz/mo/vyber/2004/0618.doc
www.militaryphotos.net
www.militaryphotos.net
www.valka.cz
http://www.vrtulnik.cz/mil/grady.htm
CZK - LR-122 (122-JROF-L, neřízená raketa) - LRM-122

LRM-122
URL : https://www.valka.cz/CZK-LR-122-122-JROF-L-nerizena-raketa-t22273#236911 Version : 0
One photo from the IDEE exhibition in Trenčín, Konstrukty Trenčín stand.
URL : https://www.valka.cz/CZK-LR-122-122-JROF-L-nerizena-raketa-t22273#236807 Version : 0
part of the air version LR122, otherwise it's part of school rockets obtained from a junkyard 5.slp in Líních in the 80's.years

Nb. buko1: vkladateľ is also the author of the images and majiteľ listed rockets.
URL : https://www.valka.cz/CZK-LR-122-122-JROF-L-nerizena-raketa-t22273#240145 Version : 0
LZMH-1
Used for the LR-112 unguided air-launched missile.
Main, mechanical, impact, with fuse and mechanical masking safety.


Lighter adjustment options:
Instant
With short delay - 0,012 s
Long delay - 0,060 s


1) Igniter
2) Firing pin
3) Spring loaded stop
4) Detonator
5) Starting charge
6) Pyrotechnic delayers
7) Pyrotechnic delay device
8) Weights
9) Spring
10) Omnidirectional body
11) Recess for firing pin
12) Diaphragm
13) Firing pin housing with pin
14) Lighter body
15) Cap


When fired and in flight:
During firing, the inertia sleeve slides downwards due to the effect of the ss, and the upper ball is released due to the rotation. The recoil force returns the whole sleeve upwards and at the same time the two balls in the middle are released and the firing pin is pushed upwards. This releases the firing pin and the firing pin spring moves the firing pin under the needle. The igniter is then armed and awaits impact.


On impact:
The igniter is pricked and here the firing pin is secured through three paths. Immediately, with a small delay and a large delay. If the projectile does not land directly, the entire case with the fuse is pushed against the needle on impact by the omnidirectional mechanism and the fuse is impaled on the needle.
*
URL : https://www.valka.cz/CZK-LR-122-122-JROF-L-nerizena-raketa-t22273#528040 Version : 0
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