Because the number two X-29 at NASA's Ames-Dryden Flight Research Facility flew at higher angles of attack than the number one aircraft, it required a spin chute system for safety.
EC89-216-5
Because the number two X-29 at NASA’s Ames-Dryden Flight Research Facility flew at higher angles of attack than the number one aircraft, it required a spin chute system for safety. The system deployed a parachute for recovery of the aircraft if it inadvertently entered an uncontrolled spin. Most of the components of the spin chute system were located on a truss at the aft end of the aircraft. In addition, there were several cockpit modifications to facilitate use of the chute. The parachute was made of nylon and was of the conical ribbon type.June 27, 1989NASA Photo / Larry Sammons› X-29 Project Description