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Terle Sportplane
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Terle Sportplane
The Terle Sportplane was an original homebuilt design built by Joseph Terle, who had no prior aircraft design experience.
The aircraft was developed from aviation articles and magazines between 1929 and 1931. The airfoil was copied from the Spirit of St. Louis profile.
The Terle Sportplane is an all wood parasol taildragger powered by a Salmson radial. After an accident with the prototype, the fuselage was changed to welded steel tube with aircraft fabric covering.
The Sportplane was tested at Roosevelt Field in New York in 1931, but the CAA did not register it as a licensed aircraft. The aircraft was later test flown by the famous test pilot, Bert Acosta, who found it perfect for his use since he was currently grounded from flying licensed aircraft by a previous infraction. After performing aerobatics with the aircraft before a large crowd, Acosta and Terle planned to produce the aircraft together as the "Acosterle Wildcat". The aircraft was test flown for two years, but could not meet certification requirements. The JT1 developed 40HP at 1800RPM and 52HP at 2200RPM.
In 1931 to build an airplane in one's garage was no ordinary feat. When Joseph Terleph (he used the easier name "Terle" for business purposes) who had not yet flown a plane took his completed craft to Roosevelt Field on Long Island to taxi it, and then had it taken aloft by a famous if reckless barnstorming pilot to be rigorously and successfully tested and found airworthy, it proved to be at the time, not only unusual, but sensational.
Joseph Terleph (1900–82) was one of those technically gifted people, who as was the case for many in previous generations, had his education cut short by lack of opportunity and bad luck. He was the oldest of seven siblings, and when he was fifteen, his father died, and the main support of the family devolved upon him. His formal education necessarily ended with grade school, though he later took high school courses at night and later subscribed to three years of correspondence courses in mechanical engineering.
Terle obtained a first-grade commercial radio operator's license in his mid-teens, and on the strength of that, at the tail end of World War I, he was allowed to enlist in the Navy at the age of eighteen with the rank of a second-class petty officer. He was in the Navy only for a short time before the war ended, but then parlayed his radio credentials into becoming the radio officer on merchant ships for two years. Leaving the sea, he taught himself the craft of printing and founded his own business, which he kept going until along with many other businesses at the time, it succumbed to the ravages of the great depression. Despite the loss of his business, during the whole of the depression, he managed to work as a printer in a plant maintained by a department store for its own advertising so that he and his family did not have to endure the kind of privations that he had experienced in his youth.
In the 1920s the country was wild about aeronautics and the exploits of the many daring pilots of those times. This enthusiasm reached a highpoint with Charles Lindbergh's successful solo flight across the Atlantic in 1927. It was around this time that Terle, lacking the necessary social and financial resources, not long married and with a young daughter, yet having faith in his own technical talent, decided to build his own plane. At the time he was living in a rented house in Queens County New York. As he described it in his autobiographical notes, one night after work in the printing plant, he was relaxing reading a magazine when he came upon an ad for a book called "The Sport Plane Constructor." The price was $1, and the "book" consisted of 32 pages with crudely executed drawings. As an extra, the author offered to sell a jig, or wooden form for holding the various pieces of a wing rib for gluing and nailing. With it, the uniformly sized ribs would be ready for mounting on the wing spars, so Terle bought the jig as well.
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Terle Sportplane
The Terle Sportplane was an original homebuilt design built by Joseph Terle, who had no prior aircraft design experience.
The aircraft was developed from aviation articles and magazines between 1929 and 1931. The airfoil was copied from the Spirit of St. Louis profile.
The Terle Sportplane is an all wood parasol taildragger powered by a Salmson radial. After an accident with the prototype, the fuselage was changed to welded steel tube with aircraft fabric covering.
The Sportplane was tested at Roosevelt Field in New York in 1931, but the CAA did not register it as a licensed aircraft. The aircraft was later test flown by the famous test pilot, Bert Acosta, who found it perfect for his use since he was currently grounded from flying licensed aircraft by a previous infraction. After performing aerobatics with the aircraft before a large crowd, Acosta and Terle planned to produce the aircraft together as the "Acosterle Wildcat". The aircraft was test flown for two years, but could not meet certification requirements. The JT1 developed 40HP at 1800RPM and 52HP at 2200RPM.
In 1931 to build an airplane in one's garage was no ordinary feat. When Joseph Terleph (he used the easier name "Terle" for business purposes) who had not yet flown a plane took his completed craft to Roosevelt Field on Long Island to taxi it, and then had it taken aloft by a famous if reckless barnstorming pilot to be rigorously and successfully tested and found airworthy, it proved to be at the time, not only unusual, but sensational.
Joseph Terleph (1900–82) was one of those technically gifted people, who as was the case for many in previous generations, had his education cut short by lack of opportunity and bad luck. He was the oldest of seven siblings, and when he was fifteen, his father died, and the main support of the family devolved upon him. His formal education necessarily ended with grade school, though he later took high school courses at night and later subscribed to three years of correspondence courses in mechanical engineering.
Terle obtained a first-grade commercial radio operator's license in his mid-teens, and on the strength of that, at the tail end of World War I, he was allowed to enlist in the Navy at the age of eighteen with the rank of a second-class petty officer. He was in the Navy only for a short time before the war ended, but then parlayed his radio credentials into becoming the radio officer on merchant ships for two years. Leaving the sea, he taught himself the craft of printing and founded his own business, which he kept going until along with many other businesses at the time, it succumbed to the ravages of the great depression. Despite the loss of his business, during the whole of the depression, he managed to work as a printer in a plant maintained by a department store for its own advertising so that he and his family did not have to endure the kind of privations that he had experienced in his youth.
In the 1920s the country was wild about aeronautics and the exploits of the many daring pilots of those times. This enthusiasm reached a highpoint with Charles Lindbergh's successful solo flight across the Atlantic in 1927. It was around this time that Terle, lacking the necessary social and financial resources, not long married and with a young daughter, yet having faith in his own technical talent, decided to build his own plane. At the time he was living in a rented house in Queens County New York. As he described it in his autobiographical notes, one night after work in the printing plant, he was relaxing reading a magazine when he came upon an ad for a book called "The Sport Plane Constructor." The price was $1, and the "book" consisted of 32 pages with crudely executed drawings. As an extra, the author offered to sell a jig, or wooden form for holding the various pieces of a wing rib for gluing and nailing. With it, the uniformly sized ribs would be ready for mounting on the wing spars, so Terle bought the jig as well.
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