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Warner Aircraft Corporation

American aircraft-engine manufacturer known for its Scarab family of radial engines.

Last updated August 25, 2026

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Overview

Warner Aircraft Corporation was an American aircraft-engine manufacturer based in Detroit, Michigan. The company is chiefly associated with the Scarab family of air-cooled radial engines, which powered a range of light aircraft during the late 1920s and early 1930s. Its corporate predecessor was Aeronautical Industries Incorporated; the business adopted the Warner Aircraft Corporation name in October 1927. The first Warner Scarab engine was produced the following month, establishing the company as a participant in the emerging market for compact radial aircraft engines. Warner's best-known product was the Scarab, a relatively small radial engine intended for light airplanes. The company expanded the range with the Scarab Junior in 1930. In 1933 it designed and built the substantially larger Super Scarab, representing an attempt to extend the product family into a higher-power segment. The Super Scarab was ultimately the last engine produced by the company. The firm operated during a formative period in American aviation, when radial engines were widely used because of their comparatively straightforward construction, air cooling, and suitability for small aircraft. Warner's engines became part of the technical and commercial history of interwar general aviation, although the available reference material does not establish a broad modern consumer brand presence, a large international distribution network, or a continuing successor brand. Warner Aircraft Corporation was taken over by Clinton Machine Company in 1950. This acquisition marks the end of Warner's independent corporate existence in the available historical record. No reliable information in the supplied sources identifies a current website, public listing, principal executive, founder, or a continuing standalone operation.

History

Warner Aircraft Corporation emerged from Aeronautical Industries Incorporated, an earlier aviation enterprise whose precise founding date is not established in the supplied reference material. In October 1927, the company changed its name to Warner Aircraft Corporation. The renaming occurred during a period when American aviation was developing rapidly and manufacturers were seeking reliable, compact engines for the expanding light-aircraft market. The company's first Scarab radial engine was produced in November 1927. The Scarab family formed the core of Warner's business and gave the company its principal place in aviation history. Radial engines arranged cylinders around a central crankcase and were commonly valued for their air cooling, mechanical accessibility, and favorable power-to-weight characteristics. Warner's products were directed toward aircraft applications rather than general industrial or automotive use. In 1930, Warner introduced the Scarab Junior, a smaller or lighter member of the Scarab line. The model broadened the range available to aircraft designers and reflected the continuing demand for engines suitable for smaller airplanes. The available source does not provide detailed production totals, customer lists, aircraft applications, or technical specifications, so the commercial scale of the Scarab Junior cannot be reliably quantified here. Warner continued development into the early 1930s. In 1933, it designed and built the Super Scarab, a considerably larger radial engine than the earlier products. The Super Scarab represented the company's effort to move toward a higher-power engine category. It was also the final engine produced by Warner Aircraft Corporation according to the cited historical account. The source does not specify whether production ended immediately after the prototype or initial manufacturing work, nor does it identify the precise reasons for the company's withdrawal from engine production. The company remained associated with Detroit, Michigan, and is described as having operated through the late 1920s and early 1930s as a manufacturer of aircraft engines. By 1950, Warner Aircraft Corporation was taken over by the Clinton Machine Company. The transaction ended Warner's existence as an independent company in the record summarized by the reference source. No information supplied here confirms the survival of the Warner name as a separate brand, the transfer of specific engine designs, or the continued manufacture of Scarab engines after the takeover.

  • 1950

    Taken over by Clinton Machine Company

    [1]

    Warner Aircraft Corporation was taken over by Clinton Machine Company, ending its independent corporate history.

  • 1933

    Super Scarab developed

    [1]

    The company designed and built the larger Super Scarab radial engine, identified as its final engine product.

  • 1930

    Scarab Junior introduced

    [1]

    Warner expanded its radial-engine range with the introduction of the Scarab Junior.

  • 1927

    Corporate name changed to Warner Aircraft Corporation

    [1]

    In October 1927, Aeronautical Industries Incorporated adopted the Warner Aircraft Corporation name.

  • 1927

    First Scarab engine produced

    [1]

    The company's first Scarab radial aircraft engine was produced in November 1927.

Products and positioning

A historical American manufacturer of radial piston engines for aircraft, particularly associated with light-aircraft powerplants.

  • Aircraft radial engine · 1927

    Scarab

    The Scarab was Warner Aircraft Corporation's principal radial-engine family. The first engine in the family was produced in November 1927, and the line became the company's central contribution to interwar American aviation. It was intended for aircraft propulsion, especially in the light-aircraft sector. The supplied reference does not provide verified displacement, output, production-volume, or aircraft-application details.

  • Aircraft radial engine · 1930

    Scarab Junior

    Introduced in 1930, the Scarab Junior extended Warner's product range with a junior variant of the Scarab radial-engine concept. It was part of the company's effort to serve aircraft requiring a smaller powerplant. The available source confirms the introduction year but does not establish detailed specifications, production quantities, customers, or the exact relationship between the Junior and other Scarab models.

  • Aircraft radial engine · 1933

    Super Scarab

    The Super Scarab was a substantially larger radial engine designed and built by Warner in 1933. It represented the company's move toward a higher-power aircraft engine than its earlier Scarab products. The Super Scarab was the last engine produced by Warner Aircraft Corporation in the cited account. Further technical and commercial information is not established by the supplied source.

Sources1 sources

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