Movatterモバイル変換

Harlow PJC-2

From Wikipedia, the free encyclopedia

PJC-2
Harlow PJC-2
General information
Type	Four-seat cabinmonoplane
National origin	United States
Manufacturer	Harlow Aircraft Company
Designer	Max B. Harlow
Number built	11
History
First flight	1937
Developed into	Harlow PC-5

TheHarlow PJC-2 is a 1930s American four-seat cabinmonoplane, designed by Max Harlow.

Development

[edit]

Max Harlow was an aeronautical engineer and instructor at thePasadena Junior College. Under his tutelage, the aircraft designatedPJC-1 was designed and built as a class project.^[1] The PJC-1 first flew on 14 September 1937 atAlhambra, California but it crashed during an extended (more than six turn)spin test with the center of gravity ballasted to the aft limit, as it was going through thecertification process—a problem generally laid at the feet the unusually rigorous spin test requirement and the government test pilot, who bailed out of the airplane after the spin "flattened out." The airplane struck the ground, still in the "flat" (longitudinally level) attitude in a bean field near Mines Field (now Los Angeles International Airport) with considerable damage; although repairable, the PJC-1 was never returned to service. PJC students then built a slightly modified airplane, which limited aileron travel with full aft-stick and incorporated a slightly larger vertical stabilizer. This became the PJC-2 model, serial number 1 certified on 20 May 1938. It was one of the first, if not the first, airplane designed and built in the U.S. with a stressed-skin semi-monocoque structure—a revolutionary design feature for the time. Harlow saw the potential and formed the Harlow Aircraft Company to build PJC-2 aircraft atAlhambra Airport.^[2] Four aircraft were impressed intoUnited States Army Air Forces service with the designationUC-80 in 1942, and used by Civil Aeronautics Administration inspectors after WWII.^[3]

Design

[edit]

1940 Harlow PJC-2 on display at theEAA Aviation Museum

The PJC-2 was an all-metal low-wingcantilever monoplane with conventional low-settailplane and a retractabletailwheel landing gear. A tandem two-seat version intended as a military trainer was developed as theHarlow PC-5.

Operational history

[edit]

In 1991, 3 PJC-2s were actively flying.^[4]

Variants

[edit]

PJC-1: Prototype, one built.
PJC-2: One prototype, serial number 1, aWarner Super Scarab radial engine, followed by 10 production airplanes. Most remaining examples have been re-engined with a Warner 165 HP or 185 HP engine.

Specifications Harlow PJC-2

[edit]

Data from Jane's All the World's Aircraft 1940,^[5] The Illustrated Encyclopedia of Aircraft^[6]

General characteristics

Crew: 1
Capacity: 3 passengers / 535 lb (243 kg) payload
Length: 23 ft 4 in (7.11 m)
Wingspan: 35 ft 9.75 in (10.9157 m)
Height: 7 ft 3 in (2.21 m)
Wing area: 185 sq ft (17.2 m²)
Airfoil:NACA 23012^[7]
Empty weight: 1,661 lb (753 kg)
Gross weight: 2,600 lb (1,179 kg)
Powerplant: 1 ×Warner Super Scarab SS-50 7-cylinder air-cooled radial piston engine, 145 hp (108 kW)
Propellers: 2-bladed wooden propeller

Performance

Maximum speed: 170 mph (270 km/h, 150 kn)
Cruise speed: 153 mph (246 km/h, 133 kn)
Landing speed: 50 mph (43 kn; 80 km/h)
Range: 788 mi (1,268 km, 685 nmi)
Service ceiling: 15,500 ft (4,700 m)
Rate of climb: 800 ft/min (4.1 m/s)
Wing loading: 14.05 lb/sq ft (68.6 kg/m²)
Power/mass: 0.056 hp/lb (0.092 kW/kg)

References

[edit]

Wikimedia Commons has media related toHarlow PJC-2.

^John Underwood (Winter 1969). "The Quiet Professor".Air Progress Sport Aircraft.
^Parker, Dana T.Building Victory: Aircraft Manufacturing in the Los Angeles Area in World War II, p. 128, Cypress, CA, 2013.ISBN 978-0-9897906-0-4.
^John Underwood.Grand Central Air Terminal. p. 95.
^"ANTIQUES AND CLASSICS AT OSHKOSH '91".Sport Aviation. November 1991.
^Grey, C.G.; Bridgman, Leonard, eds. (1940).Jane's All the World's Aircraft 1940. London: Sampson Low, Marston & company, ltd. p. 196c.
^The Illustrated Encyclopaedia of Aircraft. London: Orbis Publications. 1985. p. 2009.
^Lednicer, David."The Incomplete Guide to Airfoil Usage".m-selig.ae.illinois.edu. Retrieved16 April 2019.

The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 2099

v t e Harlow aircraft
PJC-1 PJC-2 PJC-4 PJC-5 PC-5 PC-5A PC-6

v t e United Statesmilitary transport aircraft designations, Army/Air Force andTri-Service systems
Army/Air Force sequence (1925–1962)	C-1 C-2 C-3 C-4 C-5 C-6 C-7 C-8 C-9 C-10 C-11 C-12 C-13¹ C-14 C-15 C-16 C-17 C-18 C-19 C-20 C-21 C-22 C-23 C-24 C-25 C-26 C-27 C-28 C-29 C-30 C-31 C-32 C-33 C-34 C-35 C-36 C-37 C-38 C-39 C-40 C-41 C-41A C-42 C-43 C-44 C-45 C-46 C-47 C-47F C-47T AC-47 C-48 C-49 C-50 C-51 C-52 C-53 C-54 C-55 C-56 C-57 C-58 C-59 C-60 C-61 C-62 C-63 C-64 C-65 C-66 C-67 C-68 C-69 C-70 C-70B C-71 C-72 C-73 C-74 C-75 C-76 C-77 C-77B–D C-78 C-79 C-80 C-81 C-82 C-83 C-83A C-83B C-84 C-85 C-86 C-87 C-88 C-89 C-90 C-91 C-92 C-93 C-94 C-95 C-96 C-97 KC-97 C-98 C-99 C-100 C-101 C-102 C-103 C-104 C-105 C-106 C-107 C-108 C-109 C-110 C-111 C-112 C-113 C-114 C-115 C-116 C-117 C-117D C-118 C-119 AC-119 C-120 C-121 C-121F EC-121 C-122 C-123 C-123A C-124 C-125 C-126 C-127² DHC C-127 Douglas C-127 C-128 C-129 C-130 C-130J AC-130 DC-130 EC-130/H HC-130 KC-130 LC-130 MC-130 WC-130 C-131 NC-131H C-132 C-133 C-134 C-135 KC-135 C-136 C-137² Boeing YC-137 DHC YC-137 C-137 C-138¹ C-139¹ C-140 C-141 C-142
Tri-service sequence (1962–present)	C-1 C-2 C-3 C-4 C-5 C-6 C-7² C-7 RC-7 C-8 C-9 C-10² C-10 KC-10 C-11 C-12 RC-12 C-13¹ C-14 C-15 C-16¹ C-17 C-18 C-19 C-20² C-20A–D C-20F–J C-21 C-22 C-23 C-24 C-25 C-26 C-27 C-27J C-28 C-29 C-30¹ C-31 C-32 C-33 C-34¹ C-35 C-36³ C-37 C-37B C-38 C-39¹ C-40 C-41 C-42¹ C-43¹ C-44¹ C-45 C-46
Revived original sequence (2005–present)	C-143 C-144 C-145 C-146 C-147
Non-sequential designations	C-767 C-880
Related designations	CT-39 CT-43 CV-2 CV-7
¹ Not assigned • ² Assigned to multiple types • ³ Unconfirmed

Retrieved from "https://en.wikipedia.org/w/index.php?title=Harlow_PJC-2&oldid=1324219977"

Categories:

Hidden category:

Commons category link is on Wikidata

[8]ページ先頭

Movatterモバイル変換

Development

Design

Operational history

Variants

Specifications Harlow PJC-2

See also

References