Presentations & Publications

The F-117 was a first-generation stealthy ground attack fighter. Its main purpose was to destroy enemy radar (and possibly missile sites) so that the skies would be safe for other allied aircraft. It was not designed for air combat.

Class Presentations

(as pdf, in class sequence)

Ch 1 Introduction rev 1

Appendix B Atmosphere

Appendix C Airspeeds

Ch 22 Unconventional Designs

Ch 2 Overview

Ch 3 Sizing from a Sketch rev 2

Ch 4 Airfoil and Wing-Tail Geometry rev 3

Ch 5 T/W and W/S rev 3

Ch 6 Initial Sizing

Ch 7 Configuration Layout and Loft

Ch 8 Special Considerations rev 5

Ch 9 Crew, Passengers and Payload

Ch 10 & 13 Propulsion and Fuel Systems rev 5

Ch 11 Landing Gear and Subsystems rev 5

Ch 12 Aerodynamics rev 8

Ch 14 Structures and Loads

Ch 15 Weight and Balance rev 2

Ch 16 Stability and Control rev 13

Ch 17 Performance and Flight Mechanics rev 3

Ch 18 Costs

Ch 19 Sizing and Trade Studies

SCU Short Course:

Session 1 Intro, Appendices, Ch 2-4

Session 2 Ch 5-10

Session 3 Ch 11-16

Session 4 Ch 17-22

Click on document name to open or link to abstract

Recent Presentations

(as pdf, unless otherwise indicated, so embedded mp4 files appear in black)

SSTs - Past Present & Future (expanded version), AIAA-ASAT, 2023-05

SSTs - Past Present & Future (expanded version with notes), AIAA-ASAT, 2023-05

Hydrogen-Powered Aircraft, HKUST, 2023-03

Lockheed Martin C-130, Unibo, 2022-11

Lion Air and Ethiopian Airlines Accidents, Unibo, 2022-11

Lockheed & Rolls-Royce - A Rocky Relationship, Unibo, 2022-11

Electric-Powered Aircraft rev 1, HKUST, 2022-04

Aircraft Design for Reduced Carbon Emissions, HKUST, 2021-04

What Went Wrong? - Why some commercial aircraft programs didn't live up to expectations, ITB, 2019-10

Aircraft Accidents and Safety, ITB, 2019-09

Antediluvian Engineering, HKUST, 2019-03

Initial Aircraft Sizing - A Critique, Asian Workshop on Aircraft Design Education, NUAA, 2018-10

Aircraft Sizing Procedures - A Perspective, SJTU, 2018-03

Recent Publications

Saheby, E.B., Hays, A.P., Shen, X., Aerodynamic design and evaluation of an open-nose supersonic drone, Proceedings of the Insitution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2022-04-15

Saheby, E.B., Shen, X., Huang, G., Hays, A.P, Flow Stucture of the Ridge Integrated Submerged Inlet, Aerospace Science and Technology, Elsevier Science Direct, 2021-09-27

For complete list of publications see https://www.linkedin.com/in/tonyhays/