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Aviation / Aerospace

Dornier Do P.247/6


Fighter / Fighter-Bomber Design Study [ 1945 ]



The pusher-prop Dornier Do P.247-6 was briefly studied as a new heavy fighter for the German Luftwaffe during World War 2.



Authored By: Staff Writer | Last Edited: 12/02/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

VIEW SPECIFICATIONS [+]
Appearing in late-1944, the Dornier Do P.247/6 project was a short-lived offshoot design study influenced by the high performance Do 335 "Pfeil" (Arrow) twin-engine fighter - this heavy-class platform integrating its powerplants through an in-line arrangement, one seated forward of the cockpit and the other aft. The result was one of the fastest piston-powered fighters to see production during the whole of the war. From this experience, company engineers looked to develop another effective fighter / fighter-bomber, this time centered on a true "pusher" engine arrangement. With the engine set behind the pilot, the nose assembly was now hollowed out to encourage fitting of armament and the pilot's position was moved well-ahead of midships, giving excellent vision out-of-the-cockpit / over the nose.

This study produced a single-seat, single-engine design that could have been potentially produced at-speed in large numbers - particularly as the undercarriage and tailplanes were to be taken directly from the existing Do 335. The powerplant of choice was the proposed, experimental Junkers Jumo 213T inverted-Vee liquid-cooled, turbocharged engine running at 2,000 horsepower and used to drive a four-bladed propeller unit positioned at the extreme rear of the fuselage (via extension shaft). The engine itself was buried in the middle-aft section of the body with the cockpit held forward. Intakes were positioned to the sides of the fuselage at the wingroots. Mainplanes were positioned low along the sides of the fighter while given some sweepback to account for higher flying speeds. The tail, taken straight from the Do 335, incorporated a cruciform plane pattern with dorsal and ventral fins and standard horizontal planes. For ground-running, a rather modern retractable tricycle undercarriage would have been used.

Given that the high-speed fighter held its engine at the rear, the nose assembly could become a somewhat modular component of the design in that it could house armament but also specialized equipment for special-mission roles - antenna systems could be installed to have the fighter act as a night hunter.

With all this, engineers estimated their design to have a top speed of 515 to 520 miles-per-hour which would have made it faster than its twin-engine counterpart, the Do 335 (475 mph). Beyond this no other performance figures are known. Dimensions included a wingspan of 39.3 feet.

Again, this Dornier fighter proposal joined the many others put forth by industry players attempting to satisfy Luftwaffe needs during the war. The project never materialized beyond the paper stage.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

Specifications



Dornier Flugzeugwerke - Nazi Germany
Manufacturer(s)
Nazi Germany (cancelled)
Operators National flag of modern Germany National flag of Nazi Germany
1945
Service Year
Nazi Germany
National Origin
Cancelled
Project Status
1
Crew
0
Units


AIR-TO-AIR COMBAT
General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.
INTERCEPTION
Ability to intercept inbound aerial threats by way of high-performance, typically speed and rate-of-climb.
X-PLANE
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


ARMORING
Survivability enhanced by armor allocated to protect pilot / crewspaces and / or critical operating systems.
PUSHER-PROP
Design incorporates rear-facing pusher-prop arrangement, a contrast to the more conventional puller-prop layout.
WING SWEEPBACK
Mainplanes, or leading edges, features swept-back lines for enhanced high-speed performance and handling.
RUGGED AIRFRAME
Inherent ability of airframe to take considerable damage.
HIGH-SPEED PERFORMANCE
Can accelerate to higher speeds than average aircraft of its time.
HIGH-ALTITUDE PERFORMANCE
Can reach and operate at higher altitudes than average aircraft of its time.
BAILOUT PROCESS
Manual process of allowing its pilot and / or crew to exit in the event of an airborne emergency.
CREWSPACE PRESSURIZATION
Supports pressurization required at higher operating altitudes for crew survival.
ENCLOSED CREWSPACE(S)
Features partially- or wholly-enclosed crew workspaces.
RETRACTABLE UNDERCARRIAGE
Features retracting / retractable undercarriage to preserve aerodynamic efficiency.


41.8 ft
(12.75 meters)
Length
39.4 ft
(12.00 meters)
Width/Span
15.6 ft
(4.75 meters)
Height
14,771 lb
(6,700 kilograms)
Empty Weight
20,283 lb
(9,200 kilograms)
Maximum Take-Off Weight
+5,512 lb
(+2,500 kg)
Weight Difference
monoplane / low-mounted / swept-back
Mainplane Arrangement
Monoplane
Design utilizes a single primary wing mainplane; this represents the most popular modern mainplane arrangement.
Low-Mounted
Mainplanes are low-mounted along the sides of the fuselage.
Swept-Back
The planform features wing sweep back along the leading edges of the mainplane, promoting higher operating speeds.


1 x Junkers Jumo 213T inverted-Vee liquid-cooled, turbocharged piston engine developing 2,000 horsepower driving four-bladed propeller unit in pusher arrangement.
Propulsion
519 mph
(836 kph | 451 knots)
Max Speed
388 mph
(625 kph | 337 knots)
Cruise Speed
+131 mph
(+211 kph | 114 knots)
Speed Difference
36,745 ft
(11,200 m | 7 miles)
Ceiling
870 miles
(1,400 km | 756 nm)
Range
1,800 ft/min
(549 m/min)
Rate-of-Climb


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


ASSUMED:
1 x 30mm MK 103 automatic cannon in nose assembly/
2 x 20mm MG 151.20 automatic cannons in nose assembly.

OPTIONAL:
Up to 1,000lb of externally-held drop bombs (conventional ordnance), 2 x 500lb.


2
Hardpoints


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