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McDonnell Model 60


Carrier-based Fleet Defense Fighter / Interceptor Proposal


Aviation / Aerospace

The Model 60 was another McDonnell interceptor design attempt geared towards the United States Navy after the close of World War 2.



Authored By: Staff Writer | Last Edited: 5/9/2019 | Content ©www.MilitaryFactory.com
Before the close of World War 2 (1939-1945), and in the period immediately following, the United States Navy (USN) raced to field its first jet-powered, carrier-launched fighters. Many developments existed and even more proposals were witnessed during this chapter of American aviation history that were to lead the service to acquire a whole new generation of fighter types heading into the next decade. A May 1948 requirement called for a new carrier-based, short-ranged single-seat turbojet-powered fleet defender / interceptor and, while the service eventually selected two different designs for the role - the Douglas F4D Skyray and the McDonnell F3H Demon, there lay several other submissions of note including the McDonnell "Model 60".

As an interceptor, the design required excellent take-off and climbing capabilities to meet a given inbound threat in short order. Additionally, a dimensionally compact design was needed to keep the aircraft both lightweight and relatively small for storage and operation aboard space-strapped American carriers. McDonnell introduced two designs, the Model 59 and the Model 60, the former utilizing a more conventional swept-wing arrangement, very pointed nose cone assembly and traditional tail unit with single rudder fin. The Model 60, however, settled on a twin rudder approach with full delta wing configuration. The mainplanes ran against the sides of the cylindrical fuselage which sat the pilot at the front in the usual way, aft of a shallow nosecone assembly. A tricycle undercarriage would be used and excellent vision out-of-the-cockpit provided for by a largely unobstructed "teardrop-style" canopy.

The selection of a delta wing allowed for more internal volume in the wings to be had. This meant that the main undercarriage legs could share space with additional fuel stores and possible armament while freeing volume from within the fuselage proper. A blended wing-body was not used however which would have benefitted the design even more. Besides the more obvious benefits of the delta wing championed by McDonnell engineers, another selling point of the approach was in improved handling characteristics and diving speeds. The rudder fins were set along the midway mark of each wing's trailing edge.

The Model 60 borrowed some of the Model 58's design features - a sole Westinghouse XJ40-WE-8 turbojet engine would be used and this aspirated by an intake arrangement which contoured nicely about the rounded fuselage sides at the cockpit walls. The engine was to exhaust through a single, large port between the twin rudder fins so no wing surfaces would be exposed to jet wash. The same armament scheme seen in the Model 59 was also employed in the Model 60 and consisted of 24 x aerial rockets fitted into a retractable, ventrally-mounted launcher unit.

It was estimated that the Model 60 could reach near-supersonic speeds during level flight and would most certainly be able to attain Mach 1.0+ speeds in a dive. The rocket armament gave it a healthy frontal "punch" against any incoming enemy target - particularly large Soviet bombers. As drawn up, the Model 60 was given a length of 45 feet and a wingspan of 30.3 feet. As a carrier aircraft it would also have been completed with the usual carrier-qualities such as reinforced undercarriage, tail arrestor hook and folding wings (the wings were set to fold outboard of each vertical tailplane). Maximum speed was estimated to be 762 miles per hour with a rate-of-climb nearing 30,450 feet per minute.

At any rate the Model 60 was not selected for development and the design ended its days as nothing more than a "paper airplane". The USN certainly found its fighters in due time and went on to field some of the more classic of the Cold War carrier-based aircraft to see the light of day. McDonnell continued to design and sell the service on various aircraft for the remainder of its operating days - including the fabulous F-4 "Phantom II" multirole platform which turned into a global success.


Specifications



Year:
1948
Status
Cancelled
Crew
1
[ 0 Units ] :
McDonnell Aircraft - United States
National flag of United States United States
- Fighter
- Interception
- Navy / Maritime
- X-Plane / Developmental
Length:
44.95 ft (13.7 m)
Width:
30.35 ft (9.25 m)
Height:
14.60 ft (4.45 m)
(Showcased structural dimension values pertain to the McDonnell Model 60 production model)
Empty Weight:
14,330 lb (6,500 kg)
MTOW:
17,185 lb (7,795 kg)
(Diff: +2,855lb)
(Showcased weight values pertain to the McDonnell Model 60 production model)
1 x Westinghouse XJ40-WE-8 turbojet engine developing 7,500lb of thrust (estimated).
(Showcased powerplant information pertains to the McDonnell Model 60 production model)
Max Speed:
761 mph (1,225 kph; 661 kts)
Service Ceiling:
50,000 feet (15,240 m; 9.47 miles)
Max Range:
1,087 miles (1,750 km; 945 nm)
Rate-of-Climb:
30,450 ft/min (9,281 m/min)
(Showcased performance values pertain to the McDonnell Model 60 production model; Compare this aircraft entry against any other in our database)
PROPOSED:
24 x Aerial rockets held in a retractable ventral bay.
(Showcased armament details pertain to the McDonnell Model 60 production model)
Model 60 - Base Company Product Designation
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