Controller requirements, Other Engineering

Controller Requirements 

The requirements for the stability and performance of fight control systems are specified in the certi-fication requirements for U.S. civilian aircraft, Federal Aviation Regulations (F.A.R.), Parts 23 and 25, and in the US military specifications MIL-F-8785C based on aircraft flying qualities (F.Q.s). For US Military aircraft the flying qualities are categorised by flying quality levels as described in Table 7.1. Requirements for damping ratios for the long-period and short-period modes are shown in Tables 7.2 and 7.3 respectively. Because the long-period is always a slow acting mode which gives the pilot plenty of time to control there is no specification on the natural frequencies required in this mode.
The short period natural frequency however is a critically important parameter. The short period frequency requirements for accurate flight control are determined by the n : α ratio. Fig. 7.3) shows the regions of acceptable ωnSP vs the acceleration sensitivity nZα = n/α from MIL-F-8785C for a flight phase of Category B. To determine this ratio we consider the state-space equation of the short period approximation

              x = Ax+Bu

 

Posted Date: 8/27/2012 4:38:30 AM | Location : United States







Related Discussions:- Controller requirements, Assignment Help, Ask Question on Controller requirements, Get Answer, Expert's Help, Controller requirements Discussions

Write discussion on Controller requirements
Your posts are moderated
Related Questions
Students are to undertake a tunnel blast design for the following conditions: • Tunnel is 5.5m wide by 5.5.m high • Rock is a granite with a UCS of 300 MPa • Drill hole diameter is


what is the answer for 2+2=?


why is it necessary for all engieers to about manufacturing process

Mechanical Design (48650) – Spring Semester 2012 Optimisation Assignment – BUILDING A ROAD Teams of THREE to FIVE [3 to 5] – Worth 20% of the Semester Grade Due: Thursday 23rd Marc

want a circuit manual of previous led moving dispaly

Question: a) Differentiate between the prime use of a microprocessor and a microcontroller. b) Describe why the design approach of the microcontroller must mirror that of t

ENHANCEMENT MODE MOSFET In the enhancement-mode type, the gate must be forward biased to produce charge carriers in the channel. These devices are normally of and do not condu

Hey ,How are you? I need help in another class , its 1 credit class ( Engineering seminar ), how to choose s.d in this class , , ,so we want describing our project which is ( radi