Tipuri de avioane de cercetare:

• Bell X-1 (1946)
• Douglas D-558-2 Skyrocket (1948)
• Convair XF-92 (1948)
• Bell X-2 (1952)
• Fairey Delta 2 (1954)
• North American X-15 (1959)
• Martin Marietta X-24A (1969) 

North American X-15