HF-38 Wraith

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HF-38 Wraith / HF-38N Sea Wraith
Generation 1 Heavy Interceptor and Maritime Strike Fighter
Aircraft Overview
Classification	Heavy Fighter
Role	Heavy Interceptor / Maritime Strike Fighter
Origin	Republic of Gondara
Manufacturer	Gondaran State Aviation Directorate
Cost
Used By	Airforce of Gondara, Gondaran Naval Aviation
Design Date	1937
First Flight	1938
Service Entry	1939
Status	Active Service
Classification Status	Generation 1 Heavy Fighter
Crew & Capacity
Crew	1
Passenger Capacity
Troop Capacity
Medical Capacity
Cargo Capacity
Vehicle Capacity
Dimensions
Length	28 ft 9 in
Wingspan	42 ft 0 in (19 ft 6 in folded)
Height	11 ft 4 in
Wing Area	303.5 sq ft
Cargo Bay Length
Cargo Bay Width
Cargo Bay Height
Weight
Empty Weight	8,589 lb
Loaded Weight	10,620 lb (10,900 lb MTOW)
Maximum Takeoff Weight	10,900 lb
Payload
Fuel Capacity	Internal self-sealing fuel tanks + underwing drop tanks
Powerplant
Engines	2
Engine Type	Gondaran Vortex Major 14-cylinder air-cooled radials
Power Output	2 × 1,100 hp (2,200 hp total)
Propulsion Notes	Two-speed superchargers; counter-rotating constant-speed propellers
Performance
Maximum Speed	411 mph at 25,000 ft
Cruise Speed	~320 mph
Range	1,200 mi combat radius
Ferry Range	1,650 mi with drop tanks
Service Ceiling	33,000 ft
Rate of Climb	3,880 ft/min
Takeoff Distance
Landing Distance
Armament
Guns	1 × 25mm Heavy Hub Cannon; 4 × 12.5mm Heavy Machine Guns
Bomb Load	2 × 250 lb tactical bombs or centerline 533mm aerial torpedo (HF-38N)
Defensive Armament
Hardpoints	2 underwing reinforced hardpoints
Operational Features
Landing Gear	Retractable heavy-duty taildragger
Water Capability
Ramp / Door System
Field Capability	Prepared airfields and carrier flight decks
Special Equipment	Armored cockpit tub; self-sealing fuel tanks; dual hydraulic circuits; mechanical reversion; carrier tailhook & catapult spools (HF-38N)
Related Systems
Engine Family	Vortex Major Radial Series
Related Aircraft	F-38 Ghoul, F-38N Sea Ghoul
Related Projects

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Overview

The HF-38 Wraith is Gondara's premier first-generation twin-engine heavy interceptor and maritime strike fighter. Developed entirely in-house by the Gondaran State Aviation Directorate starting in 1937, the aircraft was built to solve a critical tactical challenge: defending Gondara's vast coastline and carrier battle groups against long-range multi-engine bombers and maritime reconnaissance craft.

Combining twin Vortex Major radial engines, concentrated nose armament, and high-speed stability, the Wraith represents Gondara's preference for heavily armored, survivable combat aircraft. Its navalized variant, the HF-38N Sea Wraith, serves as the heavy strike backbone aboard the Strike-class fast aircraft carriers.

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Development & Program History

Homegrown Requirement

In early 1937, Gondaran military doctrine identified a major tactical vulnerability: standard single-engine land fighters lacked the range, endurance, and hitting power to intercept heavy maritime bombers far out at sea before they could launch attacks on fleet formations or coastal infrastructure.

The State Aviation Directorate issued an ambitious specification for a high-speed, long-range heavy fighter capable of single-engine emergency operation over open water.

Initial Structural Woes & Aerodynamic Setbacks

Gondaran design team Project Lead Aris Vane initially proposed a hyper-compact twin-engine design featuring a flush, stubby nose that sat flush with the leading edge of the wing box. The goal was to maximize pilot visibility and aerodynamic efficiency, but early wind-tunnel tests and static scale models revealed severe engineering flaws:

• **Center-of-Gravity (CG) Instability:** Placing the engines forward on the wings while cutting the forward fuselage created an extreme aft balance bias, making high-speed pitch control wildly unpredictable.
• **Armament Cramping:** Without a forward nose cone, the heavy cannon and machine guns had to be mounted in the inner wing roots, causing severe feeding jams during high-g maneuvers and poor bullet convergence at range.
• **Engine Nacelle Turbulence:** High-speed airflow between the compact wing roots and the twin engine cowlings generated heavy tailplane buffeting above 300 mph.

The Overhaul & Final Success

Rather than scrapping the program, Directorate engineers executed a complete structural redesign in late 1937:

1. **Fuselage Extension:** The nose was extended nearly four feet forward of the main wing spar. This shifted the aircraft's center of mass forward, immediately restoring pitch stability and creating an ideal centerline weapons bay. 2. **Nose Artillery Suite:** The primary battery was moved into the extended nose, housing a single 25 mm hub cannon and four 12.5 mm heavy machine guns for pinpoint forward convergence. 3. **Powerplant Neutralization:** Integrating two 14-cylinder Gondaran Vortex Major radial engines with counter-rotating propellers eliminated engine torque on takeoff and high-power climbs.

The revised prototype made its maiden flight in mid-1938, achieving 411 mph at 25,000 feet. It entered service in 1939 as the HF-38 Wraith.

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Design & Systems

Airframe Structure

The Wraith utilizes an all-metal stressed-skin aluminum alloy monocoque structure built around a massive central box spar that connects both engine nacelles directly to the fuselage. This rigid structure allows the aircraft to withstand high-speed dive recoveries exceeding 460 mph.

Propulsion

Power is provided by twin Gondaran Vortex Major 14-cylinder air-cooled radial engines delivering 1,100 hp each. The engines feature two-speed mechanical superchargers optimized for medium-to-high altitude interception and drive three-bladed counter-rotating constant-speed propellers.

Armament & Firepower

All primary weaponry is concentrated directly in the nose centerline:

• **1 × 25mm Heavy Cannon:** Mounted centrally to fire through the nose tip, firing explosive armor-piercing shells designed to shred heavy bomber wing spars.
• **4 × 12.5mm Heavy Machine Guns:** Grouped tightly around the cannon with 400 rounds per gun.

Two underwing hardpoints can carry up to 250 lb tactical bombs or long-range auxiliary drop tanks for extended ocean patrols.

Survivability & Pilot Protection

• **Armored Cockpit Tub:** The pilot sits within a 6.25 mm steel armor tub with an armored glass windscreen to resist head-on gun attacks.
• **Twin-Engine Redundancy:** Either Vortex Major engine can be feathered independently, allowing the aircraft to maintain level flight and return to base on a single engine.
• **Redundant Hydraulics & Mechanical Reversion:** Independent hydraulic lines run along opposite sides of the fuselage. If total pressure is lost, flight controls automatically revert to direct cable linkages.

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Naval Variant: HF-38N Sea Wraith

Developed simultaneously alongside the land-based model, the HF-38N Sea Wraith adapts the airframe specifically for service on the double-deck hangars of the Strike-class fast aircraft carriers (CV-2 and CV-3).

Carrier Adaptations

• **Hydraulic Wing-Folding:** Outer wing panels fold vertically outboard of the engine nacelles, reducing the wingspan from $42\text{ ft}$ to **$19\text{ ft } 6\text{ in}$** to fit the carrier's $48\text{ ft} \times 44\text{ ft}$ hydraulic elevators.
• **Reinforced Landing Gear:** The main taildragger struts were replaced with heavy-duty oleo shock absorbers to withstand high-sink-rate carrier landings.
• **Deck Arrestor Gear:** A heavy-duty A-frame tailhook is anchored directly into the central fuselage keel.
• **Maritime Ordnance:** The hardpoints are wired to carry an optional 533 mm aerial torpedo or dual 250 lb armor-piercing bombs for maritime strike roles.

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Specifications (HF-38 / HF-38N)

Feature	Standard HF-38 Wraith	Navalized HF-38N Sea Wraith
Operational Role	Land-Based Heavy Interceptor	Carrier-Based Heavy Fighter/Strike
Gross Weight	10,620 lb	10,900 lb (MTOW)
Max Speed	411 mph at 25,000 ft	402 mph at 24,000 ft
Combat Radius	1,200 miles	1,100 miles
Rate of Climb	3,880 ft/min	3,650 ft/min
Carrier Capable	No	Yes (Hydraulic Wing-Fold & Tailhook)

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See Also

- Gondaran Air Corps - Republic of Gondara Navy - Gondaran Military Equipment - F-38 Ghoul - Strike-Class Aircraft Carrier