×
Aviation & Aerospace - Airpower 2024 - Aircraft by Country - Aircraft Manufacturers Vehicles & Artillery - Armor 2024 - Armor by Country - Armor Manufacturers Infantry Small Arms - Warfighter 2024 - Small Arms by Country - Arms Manufacturers Warships & Submarines - Navies 2024 - Ships by Country - Shipbuilders U.S. Military Pay 2024 Military Ranks Special Forces by Country

Focke-Wulf Fw 61 / Fa 61


Experimental Helicopter / Technology Demonstrator


Nazi Germany | 1936



"The Focke-Achgelis Fw 61 helicopter served Germany well as a technology demonstrator - two were built prior to the war."



Authored By: Staff Writer | Last Edited: 11/18/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
The autogyro is a unique breed of air vehicle that more a fixed-wing aircraft than true helicopter. The main rotor set above the autogyro system is a free-spinning element used to generate lift while a traditional engine-and-propeller arrangement actually drives the vehicle forward. As such, autogyros typically do land nor take-off vertically as a helicopter can. The concept was brought to the forefront during 1923 when Spanish engineer Juan de la Cierva introduced to the world his "Autogiro". He later joined forces with industrialist James George Weir to develop the concept under the Cierva Autogiro Company brand label and the design was licensed globally.

The autogyro concept evolved during the latter half of the 1920s and into the early part of the 1930s. Henrich Focke of Focke-Wulf fame - makers of the classic World War 2-era Fw 190 fighter - undertook license-production of the Cierva Model C-30 during the inter-war period and this experience led him to consider a helicopter design to do away with the limitations inherent in the autogyro - taking off and landing vertically - a key limitation of the Cierva autogyro and its kind. In 1932, he teamed with Gerd Achgelis to forward such a product and this work begat Fw 61".

To streamline development, the Fw 61 relied on the existing airframe of the Fw 44 "Stielglitz" ("Goldfinch") biplane trainer. This aircraft proved itself popular on the global stage as it was adopted by a plethora of operators form Argentina to Yugoslavia and saw six major versions appear during its production run. The Fw 61 retained the fixed wheeled undercarriage of its predecessor as well as its single-finned tail unit. The engine was fitted forward of the open-air cockpit and drove a two-bladed propeller unit as normal. A key change to the original biplane design included deletion of the biplane wing arrangement and, in its place, was installed a strut network outboard of the fuselage sides. These structures mounted three-bladed main rotors of 23 foot diameter. Another change was a small horizontal plane attached to the very top of the tail fin and an anti-tipping device was fitted under the nose. The aircraft would be powered by a single Bramo Sh.14A seven cylinder radial piston engine of 160 horsepower. The Fw 61 exhibited an overall length of 24 feet with a height of 8.7 feet.

Article Continues Below Advertisement...
ADVERTISEMENTS
Finalized and completed, first flight of Prototype 1 (V1 D-EBVU) was on June 26th, 1936 and the aircraft eventually caught the attention of the RLM (the German Air Ministry) who commissioned for a second prototype as "V2 D-EKRA". This was completed and followed into the air during 1937. The vehicles were used in a myriad of tests and showcased at various events while collecting several aviation records during its time in the sky. For its career, the Fw 61 served primarily as a technology demonstrator and was never adopted for serial production - so just the two prototypes were all that was ever built.

Performance specifications were a maximum speed of 70 miles per hour, a cruise speed of 55 miles per hour, a range out to 145 miles and a service ceiling of 11,245 feet. Rate-of-climb was 690 feet-per-minute.

Interest in helicopters continued for Focke-Wulf for, in 1937, the Focke-Achgelis brand label was established for developing such products with increased performance and stability to undertake real-world assignments - both military and civilian. The company was able to deliver several short-lived helicopter designs during World War 2 beginning with the Fa 223 transport (20 produced) and ending with the Fa 336 prototype of 1944. No doubt the German military took a serious interest in the helicopter concept before their defeat - envisioning such aircraft in roles like submarine/ship spotting, air-sea rescue, aircraft recovery, MEDEVAC, and as supply mule to mountain troops. However, few were used operationally and these in very limited numbers.

Flettner also delivered several helicopter concepts for German military use during this period and their contribution can be found on this site as well.

One of the more interesting Focke-Achgelis helicopter projects became the Fa 269, a VTOL point defense fighter considered by the RLM before the end of the war. None were built but considerable work went into the project before it was cancelled including full-scale mockups and components. Much was lost in an Allied air raid which delayed the program and forced its cancellation.

Content ©MilitaryFactory.com; No Reproduction Permitted.
Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Focke-Wulf Fw 61 Experimental Helicopter / Technology Demonstrator.
1 x BMW Bramo 314E 7-cylinder radial piston engine developing 160 horsepower.
Propulsion
76 mph
122 kph | 66 kts
Max Speed
11,155 ft
3,400 m | 2 miles
Service Ceiling
143 miles
230 km | 124 nm
Operational Range
690 ft/min
210 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Focke-Wulf Fw 61 Experimental Helicopter / Technology Demonstrator.
1
(MANNED)
Crew
23.9 ft
7.29 m
O/A Length
23.0 ft
(7.00 m)
O/A Width
8.7 ft
(2.64 m)
O/A Height
1,803 lb
(818 kg)
Empty Weight
2,094 lb
(950 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Variants
Notable series variants as part of the Focke-Wulf Fw 61 / Fa 61 family line.
Fw 61 - Focke-Wulf Designation
Fa 61 - Focke-Achgelis Designation
Operators
Global customers who have evaluated and/or operated the Focke-Wulf Fw 61 / Fa 61. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 2 Units

Contractor(s): Focke-Achgelis - Nazi Germany
National flag of modern Germany National flag of Nazi Germany

[ Nazi Germany ]
Relative Max Speed
Hi: 100mph
Lo: 50mph
Aircraft Max Listed Speed (76mph).

Graph Average of 75 MPH.
Era Crossover
Pie graph section
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
2
36183
44000
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
Aviation Timeline
EarlyYrs
WWI
Interwar
WWII
ColdWar
Postwar
Modern
Future
1 / 1
Image of the Focke-Wulf Fw 61 / Fa 61
Image from the Public Domain.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
X-PLANE
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Focke-Wulf Fw 61 / Fa 61 Experimental Helicopter / Technology Demonstrator appears in the following collections:
HOME
AVIATION INDEX
AIRCRAFT BY COUNTRY
AIRCRAFT MANUFACTURERS
COMPARE AIRCRAFT
AIRCRAFT BY CONFLICT
AIRCRAFT BY TYPE
AIRCRAFT BY DECADE
GOLDEN AGE AIRCRAFT
WWII AIRCRAFT
X-PLANE AIRCRAFT
Disclaimer | Privacy Policy | Cookies

2024 Military Pay Scale Military Ranks U.S. DoD Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols US 5-Star Generals WW2 Weapons by Country

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content.

Part of a network of sites that includes Global Firepower, WDMMA.org, WDMMW.org, and World War Next.


©2024 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2024 (21yrs)