VL Humu

Last updated
Humu
VL Humu Keski-Suomen ilmailumuseo 1.JPG
The sole VL Humu at Central Finland Aviation museum
Role Fighter aircraft
National originFinland
Manufacturer VL
First flight8 August 1944
StatusCancelled
Primary user Finnish Air Force
Number built1
Developed from Brewster F2A Buffalo

The VL Humu (Whirlwind) is a Finnish fighter aircraft, designed by Valtion lentokonetehdas in 1944, and based on the American Brewster F2A Buffalo. [1]

Contents

Design and development

The Finnish Air Force had acquired 40+ surplus B-239 naval variants of the Brewster Buffalo and put them to good use during the Winter War, so it was decided in 1942 to produce a copy due to aircraft shortages. Chief designer Martti Vainio, along with designers Torsti Verkkola, Arvo Ylinen at Valtion Lentokonetehdas were tasked with designing the new aircraft as well as a replacement wing made of wood instead of metal. [2]

The Humu was largely constructed out of wood due to scarcity of metals, but the frame was made from steel and its design followed closely that of the Brewster. It was planned that captured Soviet engines and instrument panels would be used. It was powered by a 930hp Shvetsov M-63 engine, previously tested on a Brewster. The wooden wing added 250 kg of extra weight and moving the fuels tanks from the wing to the aft fuselage adversely affected maneuverability due to the center of gravity being shifted. [3]

The first flight took place on 8 August 1944. Later flight testing gave a total flight time of 19 hours and 50 minutes. The aircraft was 250 kg (551 lb) heavier than calculated, its engine was underpowered, and it was felt that the fighter would not be able to compete against enemy aircraft. The end of the Continuation War in September 1944, combined with the aircraft's poor performance, however, put the end to the project. [4]

Operators

Flag of Finland.svg  Finland

Aircraft on display

The sole Humu, HM-671, was placed in storage in 1945. It was restored between 1972 and 1974 and is displayed at the Central Finland Aviation museum. [5]

Specifications (VL Humu)

Data from https://www.militaryfactory.com/aircraft/detail.php?aircraft_id=1585

General characteristics

Performance

Armament

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

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References

  1. "VL Humu Fighter Prototype".
  2. "VL Humu - fighter".
  3. "VL Humu - fighter".
  4. "VL Humu Fighter Prototype".
  5. Dann, Richard S. and Steve Ginter, Brewster F2A Buffalo and Export Variants, Simi Valley, CA: Ginter Publications, 2017
  6. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Further reading