Belgium [Data Sheet] Renard R-31 (in work)

[spirou14 522]

Model: Renard R-31

 

Technical Description: Two-seater monoplane observation aircraft

 

Visual Aspects:

 

 

 

 

Pilot's instruments board (1) [1; page 327 to page 332] (in French first / translation in English later)

 

 

To the left of the board [1; page 327]:

 

1. Le contact double pour deux magnétos et le magnéto de départ /

2. La poignée de commande du robinet d'essence /

3. L'indicateur de pression du compresseur "Boost" /

4. Le compte-tours /

5. L'avertisseur d'incendie /

6. Une lampe d'éclairage /

 

To the right of the board [1; page 328]:

 

7. La montre /

8. Le thermomètre d'huile /

9. Le thermomètre de température d'eau /

10. Le manomètre d'huile /

11. Le manomètre d'essence /

12. L'emplacement du jaugeur /

13. Le manomètre triple donnant la pression d'air dans les freins /

14. Une lampe d'éclairage /

 

Central part of the board + photo (2) [1; page 328 and 329]:

 

15. L'indicateur de vitesse /

16. L'indicateur de virage /

17. Le variomètre /

18. L'altimètre à deux sensibilités /

19. Le gyro-compas /

20. L'horizon artificiel /

21. Le compas magnétique /

 

 

 

 

Short History:

 

According to requirements of the Belgian air force the firm Renard designed a strutted high-wing

aircraft, denominated R-31. The target of the aircraft was tactical reconnaissance, cooperation with

land troops, courieer and liaison service. In 1934 the Belgian air force ordered 28 machines (22 of

which were constructed by Sabca while Renard Constructions Aéronautiques build the 6 others),

one year later further seven.The R-31 was armed with two FN-Browning 7.62 mm machine guns, one

forward firing and one in a turret in the back seat. There was also a rarely used provision for dropping

four 10 kg bombs under the wings. The aircraft received the military registrations N-1 to N-35. On the

second series aircraft the Rolls-Royce Kestrel engine was experimentally replaced by a Lorraine-Pétrel

engine, but it did not prove good. One machine was modified  to version R-32, with glazed crew's cockpit.

On this aircraft Gnome-Rhône 14Krsd and hispano-Suiza 12Ydrs. engines were tested. R-32 was not

manufactured in series.

 

All the Renard R-31’s were used by the Bierset based observation squadrons - 9/V/1Aé (Sioux on blue

circle) and 11/VI/1Aé (Sioux on red circle). At the start of the war some 21 aircraft were available who were

operational during the whole of the “18 day Campaign” flying their last mission on May 27th, 1940. Today,

a reproduction of the R-31, scale 1/1, is being produced at the Royal Museum of the Army and Military

History in Brussels.

 

 

Configuration:

 

Production Status

 

First flight:  October 16th, 1932 [1; page 252]

Introduction year: 1935 [1; page 252]

Status: Serial production

Number built: 35

 

Crew Data

 

Number of crew: 2
Roles of crew:  Pilot, Observer/Gunner

 

Engine Data
 

Manufacturer: Rolls-Royce [1; page 361]
Name: Kestrel IIS [1; page 338, 353, 361]
Number of engines: 1
Number of cylinders: 12 [1; page 361]

Configuration: Vee [1; page 353]

Bore: 127 mm [1; page 361]

Stroke: 39.7 mm [1; page 361]

Cooling:  Rain water : 70%

                 Ethyl-Glyco : 30% [1; page 361]

Water  temperature:

- minimum : 65°C [1; page 361

- maximum : 95°C [1; page 361]

- best temperature in flight : 75°C [1; page 361]

Volume of breech (water): 18 L [2; page 210]

Fuel: 77 octanes [1; page 361]

Oil: Pure ricin "First Pressure" [1; page 361]

Input oil temperature:

- minimum : 25°C [1; page 361]

- maximum : 90°C [1; page 361]

Maximum output oil temperature:  110°C [1; page 361]
Dry weight: 418 kg [1; page 361]

Normal speed of the crankshaft: 2250 RPM [1; page 361]

Maximum speed of the crankshaft: 2700 RPM [1; page 361]

Idle speed of the crankshaft : 400 - 450 RPM [2; page 210]

Gear ratio: 0.553 [1; page 361]

Compression ratio: 6 [1; page 361]

Rotor speed of compressor to the normal regime of engine (10.06): 22.635 RPM [1; page 361]

 

Oil Data

 

Oil tanks: 1 x 28L [1; page 360]

Oil consumption:

oil consumption at rated power : 2.85 L/h [1; page 361]

"Cruise flight": 2 L/h [1; page 360]
"Flight full throttle": 3 L/h [1; page 360]

 

Fuel Data
 

Fuel tanks: 1 x 400L [1; page 360]
Fuel consumption:

Essence consumption at rated power : 145 L/h [1; page 361]

"Cruise flight": 105 L/h [1; page 360]

"Flight full throttle": 168 L/h [1; page 360]
 

Power Data

 

Rated Power at the ground : 497 hp [1; page 361]

Rated Power at 600 m : 532 hp [1; page 361]

Rated Power at 3.500 m : 487 hp [1; page 361]
 
 Propellor Data
 

Manufacturer:
Type: Mahogany wood [1; page 350]
Number of blades: 2 [1; page 350]
Blade diameter: 3.2 m [1; page 350]

Weight: 32 kg [1; page 350]

Speed:

    - normal : 1243 RPM [1; page 361]

    - maximum : 1500 RPM [1; page 361]
 
Basic Geometric Data
 

Maximum length (crutch on the ground): 9,245 m [1; page 360][2; page 210]

Breadth maximum of the fuselage: 0,950 m [1; page 360] [2; page 210]

Height of the cokpit: 1,10m [1; page 360] [2; page 210]

Length from the engine frame to the sternpost: 6,40m [1; page 360] [2; page 210]
Wing span: 14,50 m [1; page 360]

Maximum depth of the wing: 2,40 m [2; page 210]

Arrow: null [2; page 210]

Dihedral: 1/2° +- 10' On each wing [2; page 210]

Elongation: 6,5 [2; page 210]
Wing area: 32 m2 [1; page 360]

Aileron area: 1.60 m2 by aileron [2; page 210]

Aileron length: 4,36 m [2; page 210]

Maximum width aileron: 0.455 m [2; page 210]

Maximum height of the vertical stabilizer: 1,67 m [1; page 360]

Maximum wingspan of the horizontal stabilizer: 4,02m [1; page 360]

Horizontal stabilizer area: 2,35 m2 [2; page 210]

Vertical stabilizer area: 1,98 m2 [2; page 210]

Rudder area: 0,92 m2 [2; page 210]

Elevator area: 0,43 m2 [2; page 210]
Maximum height (crutch on the ground) : 2,925 m [1; page 360] [2; page 210]

Height of the axis of the propeller above the ground (crutch on the ground): 2,435 m [1; page 360]

 
Weight Data
 

Empty weight:  1400 kg [1; page 360]
Loaded weight: 2150 kg [1; page 360]

Weight/m2: 67kg [2; page 210]

Weight/hp (487hp): 4400 kg [2; page 210]
 
General Performance Data
 

Speed on the ground at 2.100 RPM: 230 km/h [2; page 211]

Maximum speed on the ground: 245 km/h [1; page 360]

Maximum speed at 4000 m at 2650 RPM : 290 km/h [1; page 360] [2; page 211]

Service ceiling: 8650 m [1; page 360]

Take-off distance:  200 m [1; page 360]

Minimum landing distance:  178 m [1; page 360]

Rate of Climb

 

Time to climb to 1000 m at full load: 2 min. 05 sec. [1; page 360]

Time to climb to 2000 m at full load: 4 min. 25 sec. [1; page 360]
Time to climb to 3000 m at full load: 6 min. 40 sec. [1; page 360]
Time to climb to 4000 m at full load: 9 min. 10 sec. [1; page 360]
Time to climb to 5000 m at full load: 12 min. [1; page 360]

 
Armament
 

- One FN-Browning 7,62 mm machine gun in the hood with a box of 350 cartridges [1; page 315]

  Focus before the pilot:

 

 

- One FN-Browning 7,62 mm machine gun on turret in rear cockpit with five chargers of 100 cartridges [1; page 315]

 

 

 

- Two launched-bombs with 4 bombs of 10 kg each. [1; page 318]

Ammunition:

 
Notes:

 

- In ascent, the throttle to the stop, the number of rounds was 2400 RPM. At 4000 m, the guts to

stop removed, joystick to gas at the bottom of the stroke, the regime in horizontal flight going to

2650 RPM. [2; page 211]

 

- (1) The R-31 was equipped with dual controls to allow the observer to take at any time control

of the plane [1; page 260]. The observer's instrument panel includes (in French first / translation

in English later) [1; page 329] :

 

- Un compas /

- Un altimètre /

- Une montre /

- Un indicateur de vitesse /

- Un contact /

- Un inclinomètre latéral /

- Un inclinomètre longitudinal /

 

- (2) The central part (the "basic six") of the pilot's instruments board of the Renard R-36 is a copy

of the R-31. [3; page 46]
 

 

 

Sources:

 

1. "La Saga du Renard 31" by André Henry de la Lindi and Alain Delannai

    Distributed by the National Fund Alfred Renard

 

 

2. "Les avions Renard 1922 - 1970" by André Hauet and Guy Roberty

    Distributed by the National Fund Alfred Renard

 

 

3. "Renard R36/R37/R38 & 40" by Nicolas Godfurnon

    Distributed by the National Fund Alfred Renard

 

 

 

 

Updates:

 

- 10/04/2015 : Addition in sources, in engine data, in basic geometric data, in weight data,

in general performance data and in notes (in color).

- 11/04/2015 : Addition of photos in armament, of informations in visual aspects (Pilot's

instruments board in French first / translation in English later), in notes and in sources (in color).

Edited June 20, 2015 by spirou14

[Holey_Tail 715]

It's pretty, but what would you do with it in the game?  It's very slow, and has no useful armament.  I've heard they were difficult to fly.  Do you know anything specific about that?

[blockhaj 3,560]

I agrea with the above.

[spirou14 522]

1°) Delicate Aircraft in dive, one of them was broken at the time of the resource, the upper wing standing out. But It's possible with maximum speed allowed. (Story of the pilot Mike Donnet [1; page 223] and [2; page 66])
 
2°) In the game can be used for light bombardment of enemy artillery or light tank. Aircraft of reserve.
 
3°) In spite of not very stable planes and difficult to manoeuver, the pilots have been cited for the heroism and skill with which they were executed without any fighter protection, in the presence of a formidable enemy aviation and AAA, the many missions of reconnaissance that has been requested. [1; page 233]
 
4°) Now that the french, against their will, are put in the international tree,  there are fewer spaces available and therefore, it has less need of the Belgians ...
 
Sources :
 

1. "La Saga du Renard 31" by André Henry de la Lindi and Alain Delannai

 

 
2. ICARE revue de l'aviation française n° 74 : 1939-40 - La Bataille de France : Volume VII - L'Aéronautique militaire belge (premiière partie) 1975

 

 

Edited April 10, 2015 by spirou14

[blockhaj 3,560]

Now that the french, against their will, are put in the international tree, there are fewer spaces available and therefore, it has less need of the Belgians ...
[/indent]

Well its the same story for ither nations too. But its not our fault since its gaijins tree standard that makes it hard to choose.

[Tarskin 1,496]

All I can say is 'Wow', this is how I like to see a data sheet!

[spirou14 522]

All I can say is 'Wow', this is how I like to see a data sheet!

 

Yes, for that aircraft, i have very informations.

[Botan 7,952]

If some day need for Belgian Po-2 appear, it would be nice.

 

Very nice done sheet, indeed.

 

I will move it to attackers.

Edited April 10, 2015 by Botan

[spirou14 522]

If some day need for Belgian Po-2 appear, it would be nice.

 

Very nice done sheet, indeed.

 

I will move it to attackers.

 

Thank's! I'll finish it this evening or tomorrow

[spirou14 522]

Updates:

 

- 10/04/2015 : Addition in sources, in engine data, in basic geometric data, in weight data, in general performance data and in notes (in color).

Edited April 11, 2015 by spirou14

[spirou14 522]

Updates:

 

- 11/04/2015 : Addition of photos in armament, of informations in visual aspects (Pilot's instruments board in French first / translation in English later), in notes and in sources (in color).

[graisseu 504]

Good work !

[Corbalte 25]

Well done Spirou ! :salute:

[spirou14 522]

The Renard R-31 réplica under construction in the Royal Army Museum Air and Space Hall - Brussels -
(Feb 6, 2011)

 

 

https://picasaweb.google.com/107238265313281486528/RenardR31?feat=email#slideshow/5570556867865396114

[anto_shturmovik 185]

I agrea with the above.

 

Always here to help, I see...

Same ting as usual : contrary to 1/3rd (at least) of the planes in your ITT proposal, it fought in the war. So it needs to be in. Period.

Plus, Spirou, as usual, did a very good job, and provided Gaijin with all the data they need to implement it ingame.

[blockhaj 3,560]

Always here to help, I see...

Same ting as usual : contrary to 1/3rd (at least) of the planes in your ITT proposal, it fought in the war. So it needs to be in. Period.

Plus, Spirou, as usual, did a very good job, and provided Gaijin with all the data they need to implement it ingame.

Dude we are trying to build a tree that will work, be balanced and be competitive. We cant fill tier 1 with loads po-2's just because they saw action in the war. Every nation during this time period had at least 1 po-2 thing. Slow as hell, built for reconnaissance, forced into combat and got a bomb load of firecrackers. The datasheet is awesome but that doesn't make the plane awesome.

[anto_shturmovik 185]

Dude we are trying to build a tree that will work, be balanced and be competitive. We cant fill tier 1 with loads po-2's just because they saw action in the war. Every nation during this time period had at least 1 po-2 thing. Slow as hell, built for reconnaissance, forced into combat and got a bomb load of firecrackers. The datasheet is awesome but that doesn't make the plane awesome.

 

The balance/competitive aspect is, IMHO, not of your business at all. That's Gaijin's work I thought you were just supposed to give Gaijin ideas and data, not choose the planes for them.

 

Gaijin should REALLY clarify what the mandate of the ITT team is.

 

Oh, and the ITT team itself should get rid of some of their members, who are getting REALLY embarrassing, and criminally lower their credibility.

Edited July 17, 2015 by anto_shturmovik

[spirou14 522]

New pictures :

 

 

 

 

[spirou14 522]

Instrument Panels of the R-31 in the course of manufacture (Modelling ladder 1/1)

 

[spirou14 522]

R-31 in the course of manufacture (Modelling ladder 1/1)

 

 

 

 

 

 

 

 

 

[Sabeda 171]

its amazing that planes like this were produced in a factory, this looks like a work of art.

[spirou14 522]

R-31 in the course of manufacture (Modelling ladder 1/1) II

 

Rudder 

 

 

 

 

 

 

Edited August 18, 2015 by spirou14

[spirou14 522]

R-31 in the course of manufacture (Modelling ladder 1/1) III

 

 

 

 

 

 

 

Edited August 18, 2015 by spirou14

[spirou14 522]

R-31 in the course of manufacture (Modelling ladder 1/1) IV

 

 

 

 

 

 

 

 

 

 

Edited August 18, 2015 by spirou14

[graisseu 504]

Amazing !  :good:

 

It will be exposed for the Royal Museum at Bruxelles ?

Edited August 18, 2015 by graisseu