ROM-1, MDR-1, MR-3 by D.P.Grigorovich, P.D.Samsonov and V.B.Shavrov (OMOS)

86k drawing from "History of aircraft construction in the USSR", Vol.1 p.398

Long range maritime reconnaissater, sesquiplane flying boat with two engines installed in tandem on the upper wing. Lower wing (hermetically sealed) was installed slightly above the waterline and carried two floats. The 'wing box' included 20 struts.

Aircraft was ordered during Summer 1925, the task was considered of high priority. According to the TZ, the hull had to be all metal (aluminum alloy), the wing - wooden. V.B.Shavrov was responsible for hull design, P.D.Samsonov - for wing and powerplant. The hull layout was chosen as simple as possible to avoid complicated procedures. Thickness of the walls was from 1.0mm above the waterline and 1.5...2.0mm below.

Tail surfaces had aluminum alloy frame with fabric cover.

During static tests insufficient wing rigidity was revealed. Additional spars were added along with other reinforcements. Aircraft gained about 600kg of weight...

ROM-1 suffered from same problem as some other aircraft of D.P.Grigorovich - too rear CG location. To fix the problem engines, fuel tanks and payload were moved forward.

Armament included two turrets (TUR-4 and TUR-5) with four machineguns, bomb racks (Sbr-8) and bomber aiming device in the nose cockpit.

Aircraft was ready in Fall 1927. Trial flights started in Leningrad (pilot L.I.Giksa), continued in November 1927 in Sevastopol (S.T.Rybalchuk). Fall 1928 brought out a conclusion: ROM-1 is unsuitable as a combat aircraft.

Designation MDR-1, MR-3 probably are the (planned) service and factory designations.

Predecessors	Modifications
-	ROM-2 ROM-2bis MDR-1	MT-1

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References	Links
"History of aircraft construction in the USSR", Vol.1 p.398-400;	...