The Freehand was powered by two non-afterburning Soyuz Tumanskiy/Khatchaturov R-27-300 turbojet engines (11,000 lb thrust each) mounted forward of and below the cockpit. They were fitted with louvered nozzles, which were vectorable through about 90º and exhausted at the center of gravity (c.g.), similar to the Bell X-14 (#18). Engine bleed air was used for reaction control nozzles at the tip of each wingtip fairing, on the tailcone, and at the tip of a ten foot long nose "probe." The overall length was 57.5 ft long (including the nose probe), with a wingspan of 27 ft. Empty weight was 12,346 lb, maximum take-off weight was 20,723 lb.

 

The Yak-36 made its first untethered hover on 9 January 1963. From there, the flight envelope was slowly expanded, with a double transition from vertical take-off to forward flight and back to vertical landing performed on 16 September 1963. A number of retractable doors (including a large "apron" under the nose) were fitted to reduce hot gas reingestion. It was only capable of vertical take-offs and landings. The first public display was at the Soviet National Aviation day on 7 July 1967 at the Domodedovo Air Show. The Yak-36 was a technology demonstrator that eventually led to the operational Yak-38 Forger.

 

Source: AHS V/STOL Wheel

Overview

Data on design, manufacture and status

Design authority: A.S. Yakovlev Design Bureau

Primary manufacturer: A.S. Yakovlev Design Bureau

Parent type: No type defined

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Jet lift VTOL

Compound type: N/A

Lift configuration: Vectored thrust (x2)

Dedicated control device: Thruster (x4)

Crew required: 1

Crew seating: Single seater

Landing gear: Wheels (all retractable)

Overall Dimensions

Data on aircraft size

Engine Details

Aircraft powerplant (lift and/or propulsion)

Total number of engines: 2

Engine designation: Tumansky R-27-300 turbine

Engine manufacturer: Tumansky/Khatchaturov

Weights and Performance

Data on aircraft weight and flight characteristics

Max Gross Weight (ground): 9400 kg (20723 lb)

Related VFS Resources

Resources related to the Yak-36 , provided by the Vertical Flight Society.
Forum Proceedings
 
Vertiflite articles
Enter a search term in the box above.
Web files from vtol.org
Enter a search term in the box above.
Webpages from vtol.org
Enter a search term in the box above.

Related Public Resources

Resources related to the Yak-36 , provided by public sources across the internet.

Images