Back PZL-Swidnik JK-1 "Trzmiel"
1957

PZL-Swidnik JK-1

Single-seat open frame ultra-light helicopter with two rotor-tip mounted Wojcicki pulse-jets. Prot. FF 28 June 1957. 2 built.

R.Simpson "Airlife's Helicopter and Rotorcraft", 1998

PZL JK-1

A new jet-powered helicopter, the JK-1 Trzmiel, designed by J. Kotlinski, a former member of Zurakowski's design team, was completed at the I.L. (Aircraft Institute) in the Spring of 1957 and was flight-tested later in the same year. TYPE: Light pulse-jet-powered helicopter. ROTOR SYSTEM: Two-bladed main rotor with small two-blade servo-rotor above main rotor and two-blade tail rotor. Main rotor blades, with a steel spar in the leading edge, are filled with plastic and have sheet duralumin skin. Servo-rotor of two circular planform blades mounted on short streamline stubs. Two-blade small diameter directional control rotor at the rear end of fuselage frame. Total main disc area 38m2. FUSELAGE: Uncovered steel-tube structure. POWER PLANT: Two 11-kg Wojcicki pulse-jets mounted at tips of main rotor blades.

Jane's All the World's Aircraft, 1959-60

PZL-Swidnik JK-1

Technical data for JK-1

Engine: 2 x Wojcicki turbojet, rated at 12.5kg, main rotor diameter: 7m, height: 2.35m, take-off weight: 340kg, max speed: 131km/h, endurance: 15min

Comments 
blasdfbvg, e-mail, 13.09.2014

ENGINES!!!! not pulsejet or turbojet!! its RAMJET 12,5kg thrust at 180m/s (end of blades speed)

heels, e-mail, 29.09.2011

Niesamowite lol !!!

olis, 22.07.2011

Ś.P. Antoni Śmigiel zginął podczas katastrofy tego śmigłoca...

soccer, e-mail, 11.06.2011

he a ja w swidniku mieszkam :D

adcfrf, 30.08.2010

ja pierdole... to sa strumieniowe a nie pulsacyjne

Greg, 21.12.2007

15 minut lotu to mozna poswirowac ;(, w dodatku dwa silniki impulsowe musialy byc bardzo glosne.

sss, 20.12.2007

niezłe... czego już takich nie robią? jakby się tak 10% ludzi przerzuciło z samochodów na takie cudeńka, ohh o ile przyjemniej jeżdziłby się po polskich drogach... tylko weź takim w głowe oberwij ;p

saw, e-mail, 19.12.2007

he a ja w swidniku mieszkam :D

keath, e-mail, 19.12.2007

Niesamowite lol !!!

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