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Vultee A-35

The A-35 was a two-seat land-based dive-bomber developed by Vultee Aircraft Corporation.  Per Freference [8] the A-35 was a development of the earlier A-31 aircraft, differing from it primarily in wing incidence angle.  The intial A-31 was developed by Vultee in response to a French Armee de l'Air requirement but did not take its first flight until 30 March 1941.  Although the design was meant primarily for sale on the foreign markt, the USAAF eventually took delivery of a number of both the A-31 and A-35 variant, though none were to see combat with the USAAF.  The design did however serve with the Royal Air Force (RAF), Royal Navy (RN), Royal Austrailian Air Force (RAAF), tRoyal Indian Air Force (RIAF), Free French Air Force, and Brazilian Air Force during WWII.  A total of 1,931 of all types of this aircraft were built.

As shown in the images below distinguishing features of this aircraft including;
 The W-shaped wing planform was incorporated into the design to shift the location of the center of lift of the wings which was initially miscalculted.

AT-19A
     [Image Sources: US Government/Public Domain via Ref [8] - as annotated by this site]
AT-19
[Source: Ref [16] - US Government/Public Domain]

In order to try and better develop weight estimating relationships an effort has been made to estimate the length of the fuselage aft of the firewall, and the length of the engine section forward of the firewall based off scaled drawings.  Together these two distances add to a term called the "structural length" and do not consider any portion of the engine or propeller shaft the extend foward of the fuselage/cowling, or any empennage that extends aft of the fuselage structure.  The drawing below shows the current best estimate of these dimensions obtained from available drawings of the airplane and will be updated with any real world data that becomes available.  For any aircraft with an inclined firewall, an attempt has been made to locate an approximate center of this location.

A35 Dims
                                                                Source References [8] [16] & [17]

In the above images, dimensions in Black come from the source material while dimesions in Red have been approximated from the data available.

The table below summarizes the current data collected on this type aircraft, identifying sources for the data

    A-35B Secondary Sources Notes
Primary Source   17

No of Crew   2

Engine:    

   Qty   1

   Model   R-2600-13

   Displacement  (cu in) 2604

   Power    

     Military (HP)  

     War Emergency (HP)  

    Normal (HP) 1500

    Take Off (HP) 1700

   Eng Dims    

     Length (ft) 5.26

     Width/Dia (ft) 4.52

     Height (ft)


   Base Engine Wt (lb) 1978.5

Propeller    

   # Blades   2

   Dia (ft) 12.0

   Manufacturer   Hamilton Std

   Type    Const Spd

Wing    

   Span (ft)  48.0

   Root Thickness (%)   16.0% 

  (in) 20.16

   Total Area  (sq ft) 335.0

     Wing (less Ailerons & Flaps) (sq ft)  

     Ailerons (sq ft)  

     Flaps (sq ft)  

Tail Area (sq ft)


   V Tail Area (sq ft)


     Fin (sq ft)  

     Rudder (sq ft)  

   H Tail Area (sq ft)  

     Stabilizer (sq ft)  

     Elevator (sq ft)  

Total Control Surf Area (sq ft)  

Length    

   Overall (ft)  39.75

   Fuselage (ft)


   Body  (ft)  

     Body Depth (ft)  5.50

    Body Width (ft)  4.50

Fuel Tank Volume (gal)  286

   Wing Tanks (gal)  136

    FuselageTanks (gal)  150

Oil Tank Volume (gal)  12.5

Water Injection Fluid Tank Volume (gal)  

Wetted Area (sqf) (sq ft)  

Pwr Ldng (lb/HP) 9.65

Wing Ldng (lb/sq ft) 48.96

Struct. Des. GW  (lb)


Ultimate Load Factor (G's) 12 

Design Speed (mph) 265

Not to Exceed Speed (mph)  450.5

     

Total Struct Weight  


   Total Wing   2172.6

     Wing   1919.0

     Ailerons    67.3

     Flaps     92.8 

     Dive Brakes     93.5 

     Fuselage Carry-Through    

   Tail   381.4

     H Tail   249.2

       Stabilizer   138.7

       Elevator    110.5 

     V Tail   132.2

       Fin   55.0

       Rudder    77.2 

   Body + Eng Section + LG    

   Body + LG   1288.0

   Body   1552.3

     Fuselage   1169.1

     Engine Section    383.2

   Landing Gear   1044.7

     Mn Landing Gr   955.4

     Tail/Nose Aux LG   89.3

   Tail Hook    

   Booms    

   Nacelles    

Total Propulsion Weight   3470.5

   Engine w/ Accessories   2180.0

   Engine(s) as Installed   2027.2

     Accessories   152.8

    Turbocharger(s)    

   Controls   24.1

   Propeller(s)   459.8

     2-Blade  


     3-Blade   459.8

     4-Blade    

   Starting System   58.7

   Water Injection System    

     Tanks    

     Piping Etc    

   Cooling System    

   Lube System   182.2

     Tanks  


     Piping Etc  


   Fuel System   565.4

     Tanks  


     Piping Etc  


Total Sys. & Eqpmt.  


   Instruments  


   Surface Controls   


   Hydraulics  


   Electrical Equip  


Electronics (Purple means incl in Furn/Gray in Useful Ld)  


   Arm Prov/Equipment & Armor  


    Furnishings  


   Anti-Ice (If not in Furn)    

   Other /Misc    

     Hoisting Gear    

     Floatation Gear    

     Armor Plate    

     

Empty Wt  


Basic Mission Useful Load  


   Crew  


   Equipment  


   Oil  


   Fuel  


   Fuel & Oil Trapped in Systems  


   Water Solution for Engine Injection  


   Bombs/Torp Etc  


   Radio (if Not Included in Empty Wt)  


   Nav Equipment  


   Oxygen System  


   Armament  


     Guns & Ammo    

       Guns    

       Ammo    

     Pyrotechnics  


     Camera  


     Other  


   Other Useful Load  


Basic Mission GW  



Notes: This website has been developed with a number of low cost or free programs including Hot Metal Pro, KompoZer, MicroSoft Designer and Da Button Factory.com

Rev 4-12-26

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