The Soviet S-75 SAM-system

V-750VM-11DM

Iraq (engine)

Sayyad-1 (Iran)

Sayyad-1 (Iran)

The Soviet S-75 SAM-system

V-750 Dvina/Desna, V-755 Volkhov and V-759 5Ya23

-- The difficult efforts to classify these missiles by photos --

Norbert Brügge, Germany

SAM (SA-75 precursor)

V-80 (ShB32)


The second stage operates with two-component hypergolic fuel, consisting of TG-02 fuel and AK-20F oxidant.The OKB Sevruk type engine S2.168B has produced only 11.5 kN of thrust.

SAM (SA-75)

V-750 & V-750V (Dvina)

Propulsion:
The first stage which was used to accelerate the missile at launch used a Kartukov PRD-18 solid rocket powerplant with 3-5 sec burn duration and 265 to 455 kN of thrust.
The PRD-18 design used 14 tubes of NMF-2 propellant and a variable cross section throat.

The second stage operates with two-component hypergolic fuel, consisting of TG-02 fuel and AK-20K oxidant
OT-155 is the so-called starting-fuel for the second stage engine, used for the missiles V-750 (1D, 11D and 13D). It was located in the section 5 of the tanks. OT-155 (Isopropyl nitrate) generate the pressure gas for the generator. The gas generator promote the turbopump to inject oxidizer and fuel in the combustor with high pressure.
For the missiles V-755 and V-759 (20D and 5V23) this pressure procedure took over a short black pipe between the solid booster and the second stage. About this gas pipe, a small portion of the pressure gas from the booster reached the turbo pump of the engine. After dropping the booster, the pressure gas took over by the second stage engine to drive the turbo pump.

S2.711	S2.711 (Iran)	S2.711V	S2.711V (Iran)
S2.711V1	S2.711V1	S2.711V1	S2.711V2

System	Name	Factory code	Military code	2th stage engine (?)
SA-75	Dvina	V-750	1D	S2.711
		V-750V	11D	S2.711V
			11DA	S2.711V1
			11DU	S2.711V2
S-75	Dvina-M	V-750VM	11DM	S2.720
S-75	Desna	V-750VN	13D	S2.720A
S-75	Desna	V-750VN	13DA
	Volga	V-760	15D (nuclear WH)

SA-75 Dvina (V-750) >>>>>>>>>>>


SA-75 Dvina (V-750V) >>>>>>>>>>


V-750V-11DA	V-750V-11DU	V-750V-11DU			Vietnam	HQ-2

HQ-2	HQ-2	HQ-2	Egypt	India	North Korea	Tondar (Iran)

Dvina V-750V nozzle

V-750V rear

SAM (S-75)

V-750VM (Dvina-M)

Dvina V-750VM nozzle

S2.720
		Iranian Tondar/Sayad-2 engine (S2.720)

System	Name	Factory code	Military code	2th stage engine (?)
SA-75	Dvina	V-750	1D	S2.711
		V-750V	11D	S2.711V
			11DA	S2.711V1
			11DU	S2.711V2
S-75	Dvina-M	V-750VM	11DM	S2.720
S-75	Desna	V-750VN	13D	S2.720A
S-75	Desna	V-750VN	13DA
	Volga	V-760	15D (nuclear WH)

SAM (S-75)

V-750VN (Desna)

Rear of the second stage (11D Dvina)

System	Name	Factory code	Military code	2th stage engine (?)
SA-75	Dvina	V-750	1D	S2.711
		V-750V	11D	S2.711V
			11DA	S2.711V1
			11DU	S2.711V2
S-75	Dvina-M	V-750VM	11DM	S2.720
S-75	Desna	V-750VN	13D	S2.720A
S-75	Desna	V-750VN	13DA
	Volga	V-760	15D (nuclear WH)

S2.720A ?

Desna V-750VN nozzle is differnt to V-750V and V-750VM (Dvina)



					HQ-2B	HQ-2B

SAM (S-75M)

V-755 (Volkhov)

System	Name	Factory code	Military code	2th stage engine (?)
S-75M	Volkhov	V-755	20D
			20DP
			20DA
		V-755V	20DO
		V-755U	20DS	S2.720A2
			20DSU
			20DU
S-75M2	5Ya23	V-759	5V23	S2.720A2
	Volga-M	V-760V	5V29 (nuclear WH)

SAM (S-75M2)

V-759 (5Ya23)

S2.720A

S2.720A1

S2.720A2

System	Name	Factory code	Military code	2th stage engine (?)
S-75M	Volkhov	V-755	20D
			20DP
			20DA
		V-755V	20DO
		V-755U	20DS	S2.720A2
			20DSU
			20DU
S-75M2	5Ya23	V-759	5V23	S2.720A2
	Volga-M	V-760V	5V29 (nuclear WH)

Experimental

Nuclear WH

Experimental supersonic ramjet 17D	V-760V with nuclear WH
Experimental supersonic ramjet 22D	V-760 with nuclear WH