CS 22.333  Flight envelope

CAA ORS9 Decision No. 1

(a) General. Compliance with the strength requirements of this Subpart must be shown at any combination of air speed and load factor on and within the boundaries of the flight envelopes specified by the manoeuvring and gust criteria of sub-paragraphs (b) and (c) of this paragraph respectively. 

(b) Manoeuvring envelope. Wing-flaps in the en-route setting, air brakes closed. (See Figure 1.) 

Figure 1 MANOEUVRING ENVELOPE

    

Subpart C

(c) Gust envelope. Wing-flaps in the enroute setting. (See Figure 2.) 

(1) At the design gust speed V_B, the sailplane must be capable of withstanding positive (up) and negative (down) gusts of 15 m/s acting normal to the flight path.

(2) At the design maximum speed V_D, the sailplane must be capable of withstanding positive (up) and negative (down) gusts of 7.5 m/s acting normal to the flight path.

Figure 2 GUST ENVELOPE