Ismail, Shaik and Parameswaran, V and Shyam, Chetty (1998) Handling Qualities Analysis of Flight Test Data of13; Fighter Trainer Aircraft MiG 21 Type 69b U-2153 Using HQPACK. Technical Report. National Aerospace Laboratories, Bangalore, India.
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Abstract
This report presents the Handling Qualities (HQ) assessment results obtained from an analysis of the flight test data of Fighter Trainer Aircraft, MiG 21 Type 69b U-2153. The flight tests were conducted by ASTE, Bangalore, and the HQ analysis of the flight test data was done at13; FMC Division, NAL. The flight test data was generated at two flight conditions (0.65 M, 3 km and 0.85 M, 3 km) using both open loop control inputs such as step, doublet, multi step (3-2-1-1), sine sweep excitations, and performing closed loop control tasks such as formation flying,target tracking. LOES, CAP', Pitch Rate Response, C*, Gibson's Dropback, Bandwidth,Closed Loop and Smith-Geddes criteria were used to assess the HQ of the aircraft. The analysis predicted the Fighter Trainer, at the two flight conditions tested, to be free from PID13; tendencies, to possess Level I HQ for general pitch maneuvers and large amplitude control tasks, and to have abrupt, bobble tendencies (HQ Level 2) during small amplitude closed loop pitch attitude control tasks such as air-to-air refuelling.
| Item Type: | Proj.Doc/Technical Report (Technical Report) |
|---|---|
| Uncontrolled Keywords: | Handling Qualities;Flight Test;Parameter Estimation;Pilot Induced Oscillations;MiG-21 |
| Subjects: | AERONAUTICS > Aeronautics (General) AERONAUTICS > Aircraft Design, Testing & Performance |
| Division/Department: | Flight Mechanics and Control Division, Flight Mechanics and Control Division, Flight Mechanics and Control Division |
| Depositing User: | Mrs Neetu Chandra |
| Date Deposited: | 04 May 2006 |
| Last Modified: | 24 May 2010 09:41 |
| URI: | http://nal-ir.nal.res.in/id/eprint/1308 |
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