The Fastest Aircraft till Date SR-71 Blackbird

With its speed ranging Mach 3 and cruising altitude of 85000 feet, it still holds the record for the fastest aircraft till date.

Lockheed's SRJ 71 Blackbird

It was in late 1950's when the aircraft industry was seen a major breakthrough that the Lockheed SR 71 aircraft was built to enter the hostile territory and bring back some potential information from that area. It was designated as "Strategic Reconnaissance" aircraft, an aircraft that is used for spy military operations.

There's a long history about this aircraft let's not dive in that deeply as it's going to confuse, however understand that the US wanted to get some insights into hostile territories without getting caught by enemies, that's one of the reasons why this aircraft was developed.

There are many special features in this aircraft which no other aircraft would potentially have

Some of them include:-

1. A Specialized Fuel which would cost 3 times of what the ATF cost in today's era.

2. A Specialized Engine

3. Specialized Shape and Metals Used in Building this aircraft.