Former SR-71 engineer talks NASA's Blackbird revival program
18 hours ago
- Tim Conners, former lead propulsion engineer for NASA's Blackbird program, provides insider perspective on the possible revival of SR-71 Tail 844 after 27 years.
- NASA's interest likely centers on using the SR-71 as a high-speed engine test bed for new J58-size engines, not for aerodynamic research.
- The JP-7 fuel supply was discarded 20 years ago, but surrogates or refineries could potentially recreate a suitable replacement, though engine bearings and seals are major concerns after decades of inactivity.
- The J58 engines are likely unserviceable, and many spare parts are held by museums; sourcing specialized equipment like start carts and cradles is a challenge but not insurmountable.
- Pilot training would require a high-fidelity digital simulator; the Blackbird is difficult to fly, and many original training systems may still exist but need reassembly.
- Conners estimates only a 25% chance the aircraft flies again, citing NASA's risk-averse culture and the extensive work needed on electronics, hydraulics, and wiring.
- There is widespread public excitement, but Conners emphasizes the need for a good reason to spend money, even though everyone wants to see the iconic jet back in the air.