The Gripen was a Swedish lightweight multirole combat aircraft. It had an all-moving canard forward of the delta wing. The canards are all-moving.[5] The test aircraft crashed due to PIO which was partially caused by the control surface servo rate limits. The SAAB Gripen has elevons to control both roll and pitch. This can cause competing control requirements. It also has negative stability in the longitudinal axis.[3] It is produced in both single and two-seat versions.[4] The empty weight is 7 metric tons and the MTOW is 14 metric tons.[5] 25% of the construction is composite material.[5] It can carry medium and short-range air-to-air missiles.[6] It uses a high-power pulse-doppler radar.[6] It is able to carry air-to-ground missiles and bombs.[6] Saab adopted a model-based systems engineering approach for newer versions of the fighter.[7]
Design studies started in 1979.[6] It is designed to operate without complex ground support from ordinary roads.[6] It used the F404 Engine.[6] The air cycle cooling system was sensitive to the surrounding humidity.[7] The E-Series, released in 2018, included a new avionics architecture, increased weapons payload, and a more powerful engine.[7]
[[SAAB Gripen PIO]]
[[SAAB Gripen JAS-39 Flight Control System]]
[[SAAB SHARC]] – small UAV
[[Disadvantage of Elevons]]
JAS-39 Airshow Crash– second accident
[[Project 2107]] – was a candidate for the JAS39 program
[[Project 2107]] – was a candidate for the JAS39 program
[[RM12 Engine]] – used for the SAAB Gripen
[[SAAB Gripen Aerodynamics]]
[[SAAB Grippen High AOA Tests]]
[[SAAB Gripen Fuel System]]
Sources
- [1] “Flight Control Law Design: An Industry Perspective – ppt video online download.” Accessed: Feb. 11, 2023. [Online]. Available: https://slideplayer.com/slide/5738737/
- [2] RTO-TR-029
- [3] L. Rundqwist and R. Hillgren, “Phase compensation of rate limiters in JAS 39 Gripen,” in 21st Atmospheric Flight Mechanics Conference, San Diego,CA,U.S.A.: American Institute of Aeronautics and Astronautics, Jul. 1996. doi: 10.2514/6.1996-3368.
- [4] B. Frisberg, “Usage of Ada in the Gripen Flight Control System”.
- [5] K. Andersson, M. Karlsson, and M. Staaf, “AERODYNAMIC AND FLIGHT DYNAMIC REAL-TIME ANALYSIS DURING SPIN AND CAREFREE MANEUVERING TESTS OF THE SAAB JAS39 GRIPEN”.
- [6] K.-E. MODIN and U. CLAREUS, “Aerodynamic design evolution of the SAAB 39 Gripen aircraft,” in Aircraft Design and Operations Meeting, American Institute of Aeronautics and Astronautics. doi: 10.2514/6.1991-3195.
- [7] “Modelon_Saab_Case_v6_FINAL.” Accessed: Jul. 28, 2024. [Online]. Available: https://modelon.com/wp-content/uploads/2022/10/Modelon_Saab_Case_v6_FINAL.pdf
Backlinks
Composite Materials
[[Model-Based Design]]
Pilot-Induced Oscillations