{{Short description|Romanian fighter/trainer aircraft prototype}} {{Infobox aircraft | name = IAR 13 | logo = | logo_size = | image = IAR 13.png | alt = | caption = | long_caption = | other_names = | aircraft_type = Fighter-trainer aircraft | aim = | outcome = | related = | national_origin = | manufacturer = Industria Aeronautică Română (IAR) | design_group = | designer = | builder = | issuer = | status = | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = 1 | introduction = | retired = | first_flight = 1933 | initiated = | in_service = | last_flight = | expected = | developed_from = IAR 12 | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }}

The '''IAR 13''' is a Romanian low-wing monoplane fighter-trainer aircraft designed before World War II.

==Design and development==

The powerplant for IAR 12, was an IAR LD 450 12-cylinder W-form watercooled in-line built under license Lorraine-Dietrich 12 Eb, that offered 450 h.p. (336&nbsp;kW) at 1,900 r.p.m., similar to the type fitted to the first C.V. 11. However, due to the increased aerodynamic drag, the maximum speed at ground level decreased to 294&nbsp;km/h. This unsatisfactory result, combined with poor handling characteristics experienced during early test flights, constrained Carafoli to improve the construction and try a new engine.<ref>{{Cite web|url=http://www.geocities.ws/huzumstreza/IAR-13.htm|title=IAR-13|website=www.geocities.ws|access-date=2019-06-17}}</ref>

The new project, called I.A.R. 13, was essentially similar to the abandoned '12', except for the fin-and-rudder. Its surface had been reduced and instead of a rounded shape it became oval. The fuselage, wings and the anti-crash pylon had all been retained, while the undercarriage suffered minor changes. The engine fitted to the airframe was a Hispano-Suiza 12Mc of 500 h.p. (373&nbsp;kW) output at 2,200 r.p.m. that operated a two-blade, all-metal Ratier propeller. The more powerful engine helped to boost the top speed to 330&nbsp;km/h, which meant a significant 12% increase. The overall flying characteristics were improved as well. Nevertheless, these significant results and the demonstration flights performed by Locotenent aviator Eugen "Puiu" Pârvulescu in 1933 did not impress the senior ARR leaders, still resistant to the new idea of a low-wing monoplane fighter.

==Operators== ;{{flag|Romania}} *Royal Romanian Air Force

==Specifications (IAR 13)==

{{Aircraft specs |ref=<ref name ="JAWA38">Grey, C.G. and Bridgman, L., ''Jane's All the World's Aircraft 1938''.(1972). Newton Abott: David & Charles {{ISBN|0-7153-5734-4}}</ref><!-- reference --> |prime units? = met<!-- eng for US/UK aircraft, met for all others. You MUST include one or the other here, or no specifications will show --> |crew=1 |length m=7.34 |length ft=24 |length in=1 |span m=11.70 |span ft=38 |span in=5 |height m=3.5 |height ft=12 |height in=6 |wing area sqm=19.8 |wing area sqft=213.13 |empty weight kg=1150 |empty weight lb=2535 |gross weight kg=1,530 |gross weight lb=3373 |eng1 number=1 |eng1 name=Hispano-Suiza 12Mc of 500 h.p |eng1 kw=340<!-- prop engines --> |eng1 hp=450<!-- prop engines --> |max speed kmh=330 |max speed mph=205 |max speed note= at sea level |endurance=2 hours 10 minutes |ceiling m=7,900 |ceiling ft=25,915 |armament = *2 x 7.7 mm Vickers machine-guns in the nose of the aircraft firing through airscrew. }}

==See also== {{aircontent| |related= *IAR 11 *IAR 14 |similar aircraft= *Boeing P-26 *Dewoitine D.500 *Avia BH-3 }} <!-- ==External links==-->

==References== {{reflist}}

==Bibliography== *{{cite journal |last1=Cortet|first1=Pierre|title=Les chasseurs I.A.R: à la mode "Jockey" des années 30, mais en Roumanie...|journal=Le Fana de l'Aviation |date=May 1976 |issue=78 |pages=10–13 |issn=0757-4169 |language=fr|trans-title=The I.A.R Fighters: In the Jockey Style of the Thirties, but in Romania...}}

{{IAR_Aircraft}}

Category:1930s Romanian fighter aircraft 13 Category:Low-wing aircraft Category:Single-engined tractor aircraft Category:Aircraft with fixed conventional landing gear Category:Single-engined piston aircraft Category:Aircraft first flown in 1933