HF-38 Wraith

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HF-38 Wraith / HF-38N Sea Wraith
First-generation 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	$70,000 (1939)
Used By	Air Force 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, HF-38N)
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
Maximum Takeoff Weight	10,900 lb
Payload
Fuel Capacity	Internal self-sealing tanks; optional underwing drop tanks
Powerplant
Engines	2
Engine Type	Gondaran Vortex Major 14-cylinder air-cooled radial engines
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 (HF-38)
Cruise Speed	Approx. 320 mph
Range	1,200 mi combat radius (as recorded)
Ferry Range	2,100 miles with drop tanks (as recorded)
Service Ceiling	33,000 ft
Rate of Climb	3,880 ft/min (HF-38)
Takeoff Distance
Landing Distance
Armament
Guns	1 × 25 mm heavy nose cannon; 4 × 12.5 mm heavy machine guns
Bomb Load	2 × 250 lb tactical bombs; or 533 mm centerline aerial torpedo (HF-38N)
Defensive Armament
Hardpoints	2 reinforced underwing hardpoints; naval torpedo mounting provision (HF-38N)
Operational Features
Landing Gear	Retractable taildragger; reinforced carrier gear (HF-38N)
Water Capability
Ramp / Door System
Field Capability	Prepared airfields; carrier flight decks (HF-38N)
Special Equipment	Armored cockpit; self-sealing fuel tanks; redundant hydraulics; mechanical control reversion; tailhook and catapult spools (HF-38N)
Related Systems
Engine Family	Vortex Major Radial Series
Related Aircraft	F-38 Ghoul
Related Projects

Overview

The HF-38 Wraith is Gondara's premier first-generation twin-engine heavy interceptor and maritime strike fighter. Developed by the Gondaran State Aviation Directorate beginning in 1937, the aircraft was designed to defend Gondara's extensive coastlines and naval formations against long-range multi-engine bombers and maritime reconnaissance aircraft.

Powered by two Vortex Major radial engines and armed with concentrated forward-firing weapons, the Wraith emphasizes speed, survivability, and long-range interception. Its navalized variant, the HF-38N Sea Wraith, serves as a heavy fighter and strike aircraft aboard the Strike-class fast aircraft carriers.

Development and Program History

Homegrown Requirement

In early 1937, Gondaran military planners identified a tactical vulnerability: standard single-engine fighters lacked the combination of range, endurance, and firepower needed to intercept heavy maritime bombers before they could attack fleet formations or coastal infrastructure.

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

Initial Structural and Aerodynamic Problems

Project lead Aris Vane's initial proposal used a compact twin-engine configuration with a short nose terminating near the wing's leading edge. Although intended to improve pilot visibility and aerodynamic efficiency, early wind-tunnel and static-model testing revealed significant problems:

• Center-of-gravity instability: The short forward fuselage and forward-mounted wing engines produced an unfavorable balance, impairing high-speed pitch stability.
• Armament packaging: The short nose forced the cannon and machine guns into the inner wing roots, creating ammunition-feed problems under high-g maneuvers and complicating gun convergence.
• Engine-nacelle turbulence: Airflow around the inner wing and engine nacelles caused tailplane buffeting above 300 mph.

Redesign and Service Introduction

Rather than cancel the program, Directorate engineers undertook a major redesign in late 1937:

1. Extended fuselage: The nose was lengthened by nearly four feet ahead of the main wing spar, improving balance and providing room for centerline armament.
2. Concentrated nose battery: A 25 mm cannon and four 12.5 mm machine guns were relocated to the extended nose to improve forward-firing convergence.
3. Revised powerplant arrangement: Counter-rotating propellers on the two Vortex Major radial engines reduced net torque effects during takeoff and high-power climbs.

The revised prototype first flew in mid-1938 and achieved a reported 411 mph at 25,000 feet. The HF-38 entered service in 1939.

Design and Systems

Airframe

The Wraith uses an all-metal, stressed-skin aluminum-alloy monocoque airframe. Its central box spar links the engine nacelles to the fuselage, providing structural strength for high-speed operations and dive recovery at speeds exceeding 460 mph.

Propulsion

Two Gondaran Vortex Major 14-cylinder, air-cooled radial engines provide 1,100 hp each. Both engines use two-speed mechanical superchargers and drive three-bladed, counter-rotating constant-speed propellers.

Armament

The Wraith's principal forward-firing weapons are grouped in the nose:

• 1 × 25 mm heavy cannon: A centrally mounted weapon intended for attacks against large aircraft.
• 4 × 12.5 mm heavy machine guns: Clustered around the cannon, with 400 rounds per gun.

Two reinforced underwing hardpoints support tactical bombs or auxiliary drop tanks. The HF-38N has an additional provision for a centerline aerial torpedo.

Survivability and Pilot Protection

• Armored cockpit: A 6.25 mm steel protective tub and armored-glass windscreen provide additional protection during head-on attacks.
• Twin-engine redundancy: Each engine can be feathered independently, allowing continued flight on a single engine under suitable conditions.
• Redundant systems: Separate hydraulic circuits and direct mechanical flight-control linkages provide backup following hydraulic failure.
• Fuel protection: Internal self-sealing fuel tanks help reduce vulnerability to battle damage.

Flight Handling & Tactical Profile

The HF-38 Wraith is engineered as an high-energy interceptor rather than a low-speed dogfighter. With a wing loading of 35 lb/sq ft, the aircraft cannot out-turn lightweight, single-engine fighters in a sustained horizontal turn. Instead, her handling characteristics are optimized for high-speed energy tactics, vertical maneuvering, and high-velocity firing passes:

• High-Speed Pitch & Dive Authority: The extended nose geometry and balanced center-of-gravity maintain crisp, responsive elevator authority at speeds exceeding 450 mph in a dive without control stiffening, enabling effective "Boom-and-Zoom" attack runs.
• Roll Authority: Concentrating the heavy weapons battery inside the nose rather than along the wings significantly reduces roll inertia. At speeds between 250 and 350 mph, her wide-span ailerons yield an exceptionally fast roll rate for a twin-engine aircraft, allowing rapid banking reversals and rolling scissors evasions.
• Gunnery Platform Stability: The counter-rotating propellers neutralize engine torque and slipstream yaw entirely. This provides a rock-steady firing platform, allowing the pilot to place concentrated 25 mm and 12.5 mm rounds on target without airframe trim drift.
• Asymmetric Engine-Out Control: If one Vortex Major engine is lost in combat, the remaining engine's thrust line and wide rudder surface keep asymmetric yaw manageable, allowing the pilot to disengage, trim the airframe, and limp back to a friendly air base or carrier.

Naval Variant: HF-38N Sea Wraith

Developed alongside the land-based aircraft, the HF-38N Sea Wraith adapts the Wraith for carrier service aboard the Strike-class fast aircraft carriers (CV-2 and CV-3).

Carrier Adaptations

• Folding wings: Hydraulically operated outer wing panels fold vertically outside the engine nacelles, reducing overall span from 42 ft to 19 ft 6 in for more efficient deck and hangar stowage.
• Reinforced landing gear: Heavy-duty oleo struts withstand the higher sink rates associated with arrested carrier landings.
• Arresting gear: An A-frame tailhook is secured to the fuselage keel; catapult spools support carrier launching operations.
• Maritime ordnance: The naval variant can carry two 250 lb bombs or an optional centerline-mounted 533 mm aerial torpedo.

The Strike-class carriers' hydraulic elevators are recorded as measuring 48 ft × 44 ft. Folding wings reduce the aircraft's stowed footprint, rather than being strictly necessary for clearance within an elevator of those dimensions.

Specifications

Feature	HF-38 Wraith	HF-38N Sea Wraith
Primary role	Land-based heavy interceptor	Carrier-based heavy fighter / maritime strike aircraft
Recorded gross weight	10,620 lb	10,900 lb (maximum takeoff weight)
Maximum speed	411 mph at 25,000 ft	402 mph at 24,000 ft
Recorded combat radius	1,200 mi	1,100 mi
Rate of climb	3,880 ft/min	3,650 ft/min
Folding wings	No	Yes; 19 ft 6 in folded
Carrier capable	No	Yes; arresting hook and reinforced landing gear

See Also

• Air Force of Gondara
• Navy of Gondara
• Gondaran Military Equipment
• F-38 Ghoul
• Armed Forces of Gondara