56 



THE DEVELOPMENT OF WEAPONS SYSTEM REQUIREMENTS 



Sensitive Parameters and Elements 

 Speed ^ Maneuver -/^ 

 Altitude ^ Defense "^ 

 Number v^ Radar Size 

 Tactics v^ Weapon y^ 



Raid Geometr y 



|-* 95 n.mi. H 



20 Aircraft 



VM\ 



_j L 5 n.mi. 

 ~^ '^Spacing 



Direction of Raid 



IVlission Profile 



g 50 



K 300 fps (2g Evasive 



Action) 



1000 



01 (\ L 



700-1000 V 100 50 



RANGE FROM TARGET (n.mi.) 





 Target 



Radar Cross Section 



90° 



180° 1 



Fig. 2-7 Target Complex Characteristics. 



The radar cross-section characteristics of the hypothetical target are 

 only generally known and are shown in Fig. 2-2. Paragraph 4-7 explains 

 the factors contributing to characteristics of this type. Paragraph 4-9 

 discusses how the target radar area may be estimated for purposes of 

 preliminary design. 



The turboprop propulsion system of the enemy aircraft was chosen to 

 introduce into the model the effects of the modulation characteristics of the 

 reflected radar energy (Paragraphs 4-7 and 4-8). This can be an important 

 radar design consideration. 



The target is assumed to carry a high-yield nuclear weapon. Destruction 

 resulting from impact on the target aircraft is assumed to cause a detona- 

 tion capable of producing a destructive overpressure within a 1000-ft radius 

 sphere around the target. Ignoring time effects, 1000 ft thus defines the 



