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XF-84H Thunderscreech

450 QwertyEpic  2.4 years ago
147 downloads
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Auto Credit Based on ZeroWithSlashedO's Experimental Challenge [Closed]

Click here for the FIXED Version


The Thunderscreech was proposed designed for the navy as a fighter aircraft with short takeoff, basically, the thing go like this:

"Plane go up good with propeller, so if short takeoff, then add propeller"
- QwertyEpic

if you want to go for the Wikipedia approach, then this is your answer:

"Although the USAF Wright Air Development Center was the key sponsor of the Republic Project 3347 turboprop fighter, the initial inception came from a U.S. Navy requirement for a carrier fighter not requiring catapult assistance. Originally known as XF-106 (a designation later reused for the Convair F-106), the project and its resultant prototype aircraft were redesignated XF-84H, closely identifying the program as an F-84 variant, rather than an entirely new type. With a projected contract for three prototypes, when the US Navy canceled its order, ultimately, the remaining XF-84H prototypes became pure research aircraft built for the Air Force's Propeller Laboratory at Wright-Patterson AFB to test supersonic propellers in exploring the combination of propeller responsiveness at jet speeds.

The XF-84H was created by modifying a F-84F Thunderstreak airframe, installing a 5,850 hp (4,360 kW) XT40-A-1 turboprop engine in a centrally-located housing behind the cockpit with a long extension shaft to the nose-mounted propeller. The turbine engine also provided thrust through its exhaust; an afterburner which could further increase power to 7,230 hp (5,390 kW) was installed but never used. Thrust was adjusted by changing the blade pitch of the 12 ft (3.7 m) diameter Aeroproducts propeller, consisting of three steel, square-tipped blades turning at a constant speed, with the tips traveling at approximately Mach 1.18 (1,446 km/h). To counter the propeller's torque and "P-factor", the XF-84H was fitted with a fixed dorsal yaw vane. The tail was changed to a T-tail to avoid turbulent airflow over the horizontal stabilizer/elevator surfaces from propeller wash.

The XF-84H was destabilized by the powerful torque from the propeller, as well as inherent problems with supersonic propeller blades. A number of exotic blade configurations were tested before settling on a final design. Various design features were intended to counteract the massive torque, including mounting the left leading edge intake 12 in (30 cm) further forward than the right, and providing left and right flaps with differential operation. The two prototypes were equally plagued with engine-related problems affecting other aircraft fitted with T40 engines, such as the Douglas A2D Skyshark and North American XA2J Super Savage attack aircraft. A notable feature of the design was that the XF-84H was the first aircraft to carry a retractable/extendable ram air turbine. In the event of engine failure, it would automatically swing out into the airstream to provide hydraulic and electrical power. Due to frequent engine problems, as a precaution, the unit was often deployed in flight."
- Wikipedia

So, My plane does just the thing it was designed to do, it can take off from USS Tiny, and it also has a functional cockpit. I spent about 3-4 days cuz i did nothing but build this thing so...

Here are the aspects:

Difficulty: Intermediate (exceeds T-W ratio of 1.8 ;-;)
Aircraft type: Experimental + Protototype of a CONCEPT fighter
Physics: Low
Experimental Type: Short-Carrier-Takeoff / Technology

SIDE NOTES:

I originally tried to make the Valkyrie but I slowly got bored cuz bomber boring so the Thunderscreech I made.

I also made a super simplified cockpit based on the first pictures of "Thunderscreech cockpit", but some buttons and doodads are just made with a random input cuz yes.

also...

Turn on max volume for full experience :)

Spotlights

General Characteristics

  • Predecessor Experimental Challenge [Closed]
  • Created On Android
  • Wingspan 26.6ft (8.1m)
  • Length 39.0ft (11.9m)
  • Height 12.9ft (3.9m)
  • Empty Weight 6,812lbs (3,090kg)
  • Loaded Weight 8,518lbs (3,863kg)

Performance

  • Power/Weight Ratio 2.77
  • Horse Power/Weight Ratio 0.117
  • Wing Loading 39.9lbs/ft2 (194.8kg/m2)
  • Wing Area 213.5ft2 (19.8m2)
  • Drag Points 4274

Parts

  • Number of Parts 187
  • Control Surfaces 5
  • Performance Cost 893
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    Thx weeeeeeeeeeeeeeee, Shimamurahougetsu, NARGII, fifoip, and GorillaGuerrilla for the support :)

    Pinned 2.4 years ago
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    @ZeroWithSlashedO sorry, I took a short break after making the fixed version, also it is already uploaded and its already a successor but it still doesn't show it here.
    Here's the link:
    https://www.simpleplanes.com/a/2zn2dg/XF-84H-Thunderscreech-FIXED

    2.4 years ago
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    @QwertyEpic
    Done?
    Okay, upload it. Since you're bronze, just upload it and add a [FIXED] to the title. Keep it as a successor to this plane, otherwise I won't acknowledge it.

    2.4 years ago
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    @ZeroWithSlashedO I fixed the T-W ratio :)

    2.4 years ago
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    @ZeroWithSlashedO oh ok thank you

    2.4 years ago
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    I'm gonna have to ask you to lower the thrust to weight ratio, or there'll be quite the decrease in points later.
    If you want to make your aircraft faster without exceeding the max T/W Ratio, tune down the drags on the fuselage parts. The wings on the other hand, is already dragless.

    2.4 years ago
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    @Seeras thank you!

    2.4 years ago
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    The thunderscreech was so loud, it made ground crews physiclly sick

    2.4 years ago
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    Mod Seeras

    @QwertyEpic
    Done

    2.4 years ago
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    hey @Seeras , I joined another challenge so would you mind if you made this plane a successor to this:

    https://www.simpleplanes.com/a/97q66p/Experimental-Challenge

    2.4 years ago