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Author Topic: VL Myrsky  (Read 8488 times)

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TT

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VL Myrsky
« on: July 28, 2013, 09:09:01 PM »



VL Myrsky (English: Storm) was a Finnish World War II fighter, designed by the State Aircraft Factory (Valtion lentokonetehdas) for the Finnish Air Force. The models of the aircraft were Myrsky I, Myrsky II, and Myrsky III.

Due to difficulties obtaining duraluminium, the wings were made out of plywood and the fuselage was metal structure with fabric or plywood coating. The planned Bristol Taurus III engine was not available due to war, so a Pratt & Whitney R-1830 (civil Twin Wasp) was chosen. Availability of this engine was also problematic, so an R-1830-S3C3-G was used for the first prototype and less-powerful SC3-Gs for later prototypes and production fighters. These were bought from German war booty stocks.
The first Myrsky I prototype flew on 23 December 1941. The prototype was fully functional, but too heavy. After some modifications they soon had three new prototype aircraft. The test flights showed some problems with the structural strength during high speed tests. All three prototypes were destroyed during test flights; two test pilots died, one was seriously injured.
Series production started after German deliveries of Messerschmitt Bf 109 had begun in 1943. The series production version was called Myrsky II. 47 Myrsky IIs were built and together with the Myrsky I version the production amounted to 51 in all. Although the aircraft met the specifications set for it, it did not fulfill all expectations due to structural problems.
The Myrsky III was ordered in spring 1943, but none were built.


General characteristics

Crew: One
Length: 8.35 m (27 ft 5 in)
Wingspan: 11.00 m (36 ft 1 in)
Height: 3.00 m (9 ft 10 in)
Wing area: 18.00 m² (193.7 ft²)
Empty weight: 2,485 kg (5,480 lbs)
Max. takeoff weight: 3,213 kg (7,080 lbs)
Powerplant: 1 × Pratt & Whitney R-1830-SC3-G Twin Wasp 14-cyl., 749 kW (1,065 hp)

Performance

Maximum speed: 535 km/h
Range: 311 miles (500 Km)
Service ceiling: 9,500 m ()
Rate of climb: 15 m/s (50 ft/s)
Power/mass: 3.0 kg/hp (6.6 lb/hp)

Armament

4× 12,7 mm LKK/42 machine guns
2× 100 kg bombs









Cockpit

Main instrument panel


1. Artificial horizon
2. Turn and bank (V, KAARTAA, O, KALLISTUU - L (left), TURN, R (right), BANK
3. Compass
4. Speed (NOPEUS, KM/T - SPEED, KM/H)
5. Altitude and precise altitude (KORKEUS, KM - ALTITUDE, KM)
6. Rate of climb (NOUSEE, YLÖS, LASKEE, ALAS - CLIMBS, UP, SINKS, DOWN)
7. Clock (can't read the text)
8. RPM (k/m/n, x100 - r/p/m, x100)
9. Boost pressure (AHTOPAINE, ? - BOOST PRESSURE, ?)
10. Fuel and oil pressure (BENS PAINE, ÖLJYN-PAINE - GAS (gasoline) PRESSURE, OIL PRESSURE
11. Oil temperature (ÖLJYNLÄMPÖ °C, OIL TEMPERATURE °C
12. Cylinder temperature (C°, SYLINTERIN LÄMPÖ - CYLINDER TEMPERATURE
13. Fuel quantity (POLTTOAINE, LITR, VAAKALENTO - FUEL, LITR, LEVEL FLIGHT
14. Undercarriage position (YLH(äällä), ALH(aalla) - UP, DOWN
15. Undercarriage warning lamp (text is LASKUTELINE HÄLYYTYS - UNDERCARRIAGE WARNING)
16. Instrument panel light
17. Frame of the compass deviation table (text on the left is: KK-KAMERA LIITIN - MG (machine gun) CAMERA CONNECTOR)
18. Gunsight brightness adjustment (KIRKASTAA - BRIGHTEN
19. Fuel warning lamp (text is LAMPPU SYTTYY KUN SÄILIÖSSÄ ON POLTTOAINETTA JÄLJELLÄ 75 LITRAA - LAMP LIGHTS WHEN 75 LITRES OF FUEL LEFT IN TANK

Main switch panel


1. KOJETAULU VALOT, KIRK, KATK. - INSTRUMENT PANEL LIGHTS, BRIGHTEN, SWITCH
2. LATAA, PAINA - LOAD, PRESS
3. APUKOJETAULU VALOT, KIRK, KATK. - SECONDARY INSTRUMENT PANEL, BRIGHTEN, SWITCH
4. KYTKETÄÄN AINOASTAAN AMMUNNAN AJAKSI - ONLY CONNECT WHEN FIRING
5. circuit diagram - AKKU, KÄYNN., MAA-AKKU, KYTKIN, MAA-AKKU - BATTERY, START, GROUND BATTERY, SWITCH, GROUND BATTERY
6. POMMILAUK PÄÄKYTKIN - BOMB RELEASE MAIN SWITCH
7. KONEKIVÄÄRIT, ULOIMMAT KK:T, LUKONP. TAHD., SISEMMÄT KK:T, LUKONP. TAHD., HUOM, AMMUTTAESSA OVAT SEKÄ LUKONP. ETTÄ TAHD. KYTK. OLTAVA KYTKETTYINÄ - MACHINE GUNS, OUTER MGs, LOCK HEAD SYNCHRONIZER, INNER MGs, LOCK HEAD SYNCHRONIZER, CAUTION, WHEN FIRING BOTH LOCK HEAD AND SYNCHRONIZER SWITCHES MUST BE CONNECTED
8. LASKUTEL. VALOT - UNDERCARRIAGE LIGHTS
9. LENTO VALOT - FLYING LIGHTS (navigation lights)
10. LÄMPÖ PUKU, KIDUS-SÄÄTÖ - WARM SUIT, (RADIATOR) FLAP CONTROL
11. KK-KAMERAN LÄMMITYS - MG CAMERA WARMING
12. VERKOSTON ?KOKSIAALIMAA-AKKULLA?, ?, ?, KÄYNNISTYS MAA-AKKULLA, KONEEN AKKU KYTKETTYNÄ - WITH (POWER) GRIDS ?COAXIAL GROUND BATTERY?, ?, ?, WITH GROUND BATTERY, PLANE'S BATTERY CONNECTED
13. PITOT PUTKI - PITOT TUBE
14. MITTARIT - INSTRUMENTS
15. KATKAISE - PAINA PUNAISTA NAPPIA - DISCONNECT - PRESS RED BUTTON
16. KÄYTETÄÄN SULAKKEINA - PIDETÄÄN AINA KYTKETTYNÄ - USED AS FUSES - ALWAYS KEEP CONNECTED
17. AKKU - BATTERY
18. GENER. - GENERATOR
19. LASKUTEL MOOTTORI - UNDERCARRIAGE MOTOR
20. LASKUTEL RELEET - UNDERCARRIAGE RELAYS
21. KK KAMERA LAUK - MG CAMERA TRIGGER
22. SYTYTYS KÄYNN. - IGNITION START
23. KOJETAULU VALOT - INSTRUMENT PANEL LIGHTS
24. RADIO
25. KYTKE - PAINA MUSTAA NAPPIA - CONNECT - PRESS BLACK BUTTON

Secondary instrument panel (right)


1. (radiator) flaps switch (KIINNI, AUKI, KIDUSTENSÄÄTÖ - CLOSED, OPEN, FLAPS ADJUSTMENT
2. Instrument panel flight
3. Compressed air tap (PUD. SÄIL, PAINEILMAHANA - DROP TANK, COMPRESSED AIR TAP
4. Ammo counter (OIKEA SISIMM. KK, OIKEA ULOMM. KK - RIGHT INNER MG, RIGHT OUTER MG
5. Flow indicator (PUD. SÄILIÖIDEN POLTTOAINEEN VIRT. OSOITTAJA - DROP TANKS FUEL FLOW INDICATOR
6. Starting switch (KÄYNNISTIN PAINA 5-10 SEK. JA VEDÄ - STARTER PRESS 5-10 SEC. AND PULL
7. Mixture temperature (SEOKSEN LÄMPÖ)
8. Primer pump (RYYPYTYSPUMPPU)

Bomb equipment in cockpit


1. Dropping selector (VASEN POMMI, MOLEMMAT POMMIT, POMMIN PUDOTTUA LAMPPU SAMMUU - LEFT BOMB, BOTH BOMBS, LAMP GOES OFF WHEN BOMB IS DROPPED
2. Mechanical release handle (MEKAANINEN LAUKAISIN MOLEMMAT PUTOAVAT VEDÄ - MECHANICAL RELEASE BOTH DROPS PULL
3. Indicator lamps
4. Secure selector (VARMIST, POMMIT PUTOAVAT, ? - SECURE, BOMBS DROP, ?
5. Main switch

VL Pyörremysky cockpit (not a same plane, but likely very similar.


Väisälä THm/44kk reflector sight (Väisälä tähtäin malli 44 konekivääri, sight model 44 machine gun)



Reticle
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HotelAlpha

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Re: VL Myrsky
« Reply #1 on: July 28, 2013, 09:11:51 PM »

Looks like a good fighter! +1
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BravoFxTrt

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Re: VL Myrsky
« Reply #2 on: July 28, 2013, 09:53:02 PM »

Very Cool!
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Batbomb

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Re: VL Myrsky
« Reply #3 on: July 29, 2013, 04:53:49 AM »

Didn't heard of that one! Good request! 1+
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Radoye

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Re: VL Myrsky
« Reply #4 on: July 29, 2013, 05:44:45 AM »

Looks like a good fighter! +1
Actually it wasn't so good, it underperformed in the fighter role and ended up being used together with outdated fighter types in the tactical recon role.

But i agree, it is a good request. We need these minor nation planes, they add flavor.
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Joberg

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Re: VL Myrsky
« Reply #5 on: July 29, 2013, 07:04:17 AM »

Yeah I had read that it was an under performer but it certainly is a good lookin' plane.
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TT

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Re: VL Myrsky
« Reply #6 on: July 29, 2013, 07:30:42 AM »

Myrsky is also only finnish made fighter ever took part in combat.

From wikipedia:
"Fifteen Myrsky fighters flew 68 missions during the Continuation War. During one mission, they met Soviet Yak-7s, but the fight ended without losses for either side. During two other missions, Myrskys damaged two Soviet fighters, which both were destroyed on landing. Six Myrskys took part in a bombing mission on September 3, 1944, destroying 11 Polikarpov U-2 reconnaissance aircraft on ground"

So we can say this plane shot down two planes, and made successful fighter-bomber mission. And it was only wood an glue.
I think we need this!  ;D
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Typhoon Ib

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Re: VL Myrsky
« Reply #7 on: July 29, 2013, 08:15:05 AM »

better'n'LERCHE
good looking, seriously potent fighter.
too bad there were no good engines "available" (politics?) and she had structural problems.

would love to see the IIIrd variant with proper horsepower and strengthened pieces, so she does not fall apart and stuff.
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Fresco23

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Re: VL Myrsky
« Reply #8 on: July 29, 2013, 11:09:10 AM »

It would be a fun addition! +1And it looks nice too!

Just an idea: Since these had a record of not holding up well in the Finnish winter, I wonder if its possible to simulate the possibility that it fail structurally while in flight? Like the random failures mod, it could incorporate a % chance that the wing fail at high speeds, or in sudden maneuvers. Such as have a wing deform/delaminate due to glue losing hold. It would be cool to have it start to peel, then have it hold together in this state for a second or two, just enough time for the pilot to panic, then the wing could suddenly fold away or explode in a cloud of splinters, debris, and plywood panels!

  ???

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Il2 crazy fan

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Re: VL Myrsky
« Reply #9 on: July 30, 2013, 09:27:42 AM »

It would be a fun addition! +1And it looks nice too!

Just an idea: Since these had a record of not holding up well in the Finnish winter, I wonder if its possible to simulate the possibility that it fail structurally while in flight? Like the random failures mod, it could incorporate a % chance that the wing fail at high speeds, or in sudden maneuvers. Such as have a wing deform/delaminate due to glue losing hold. It would be cool to have it start to peel, then have it hold together in this state for a second or two, just enough time for the pilot to panic, then the wing could suddenly fold away or explode in a cloud of splinters, debris, and plywood panels!

  ???

OMG I won't fly it then 0_o but the modder can make a true stable version of it right ?
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