Aerodynamics and Flight Dynamics
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Module 1: Hypersonic Atmosphere Lecture1: Characteristics of Hypersonic Atmosphere
NPTEL –Aerospace Module 1: Hypersonic Atmosphere Lecture1: Characteristics of Hypersonic Atmosphere 1.1 Introduction Hypersonic flight has special traits, some of which are seen in every hypersonic flight. Presence of these particular features during a flight is highly dependant on type of trajectory, configuration etc. In short it is the mission requirement which decides the nature of hypersonic atmosphere encountered by the flight vehicle. Some missions are designed for high deceleration in outer atmosphere during reentry. Hence, those flight vehicles experience longer flight duration at high angle of attacks due to which blunt nosed configuration are generally preferred for such aircrafts. On the contrary, some missions are centered on low flight duration with major deceleration closer to earth surface hence these vehicles have sharp nose and low angle of attack flights. Reentry flight path of hypersonic vehicle is thus governed by the parameters called as ballistic parameter and lifting parameter. These parameters are obtained by applying momentum conservation equation in the direction of the flight path and normal to it. Velocity-altitude map of the flight is thus made from the knowledge of these governing flight parameters, weight and surface area. Ballistic parameter is considered for non lifting reentry flights like flight path of Apollo capsule, however lifting parameter is considered for lifting reentry trajectories like that of space shuttle. Therefore hypersonic flight vehicles are classified in four different types based on the design constraints imposed from mission specifications. 1. Reentry Vehicles (RV): These vehicles are typically launched using rocket propulsion system. Reentry of these vehicles is controlled by control surfaces. -
Notes on Earth Atmospheric Entry for Mars Sample Return Missions
NASA/TP–2006-213486 Notes on Earth Atmospheric Entry for Mars Sample Return Missions Thomas Rivell Ames Research Center, Moffett Field, California September 2006 The NASA STI Program Office . in Profile Since its founding, NASA has been dedicated to the • CONFERENCE PUBLICATION. Collected advancement of aeronautics and space science. The papers from scientific and technical confer- NASA Scientific and Technical Information (STI) ences, symposia, seminars, or other meetings Program Office plays a key part in helping NASA sponsored or cosponsored by NASA. maintain this important role. • SPECIAL PUBLICATION. Scientific, technical, The NASA STI Program Office is operated by or historical information from NASA programs, Langley Research Center, the Lead Center for projects, and missions, often concerned with NASA’s scientific and technical information. The subjects having substantial public interest. NASA STI Program Office provides access to the NASA STI Database, the largest collection of • TECHNICAL TRANSLATION. English- aeronautical and space science STI in the world. language translations of foreign scientific and The Program Office is also NASA’s institutional technical material pertinent to NASA’s mission. mechanism for disseminating the results of its research and development activities. These results Specialized services that complement the STI are published by NASA in the NASA STI Report Program Office’s diverse offerings include creating Series, which includes the following report types: custom thesauri, building customized databases, organizing and publishing research results . even • TECHNICAL PUBLICATION. Reports of providing videos. completed research or a major significant phase of research that present the results of NASA For more information about the NASA STI programs and include extensive data or theoreti- Program Office, see the following: cal analysis. -
Performances of a Small Hypersonic Airplane (Hyplane)
Politecnico di Torino Porto Institutional Repository [Proceeding] PERFORMANCES OF A SMALL HYPERSONIC AIRPLANE (HYPLANE) Original Citation: Savino R.; Russo G.; D’Oriano V.; Visone M.; Battipede M.; Gili P. (2014). PERFORMANCES OF A SMALL HYPERSONIC AIRPLANE (HYPLANE). In: 65th International Astronautical Congress„ Toronto, Canada, 29 September - 3 October 2014. pp. 1-13 Availability: This version is available at : http://porto.polito.it/2591763/ since: February 2015 Publisher: International Astronautical Federation (IAF) Terms of use: This article is made available under terms and conditions applicable to Open Access Policy Article ("Public - All rights reserved") , as described at http://porto.polito.it/terms_and_conditions. html Porto, the institutional repository of the Politecnico di Torino, is provided by the University Library and the IT-Services. The aim is to enable open access to all the world. Please share with us how this access benefits you. Your story matters. (Article begins on next page) 65th International Astronautical Congress, Toronto, Canada. Copyright ©2014 by the Authors. Published by the IAF, with permission and released to the IAF to publish in all forms. IAC-14-D2.4 PERFORMANCES OF A SMALL HYPERSONIC AIRPLANE (HYPLANE) Raffaele Savino Department of Industrial Engineering, University of Naples “Federico II”, Italy Gennaro Russo Trans-Tech srl and Space Renaissance Italia, Italy Vera D’Oriano*, Michele Visone Blue Engineering, Italy Manuela Battipede, Piero Gili Department of Mechanical and Aerospace Engineering, Polytechnic of Turin, Italy In the present work a preliminary performance study regarding a small hypersonic airplane named HyPlane is presented. It is designed for long duration sub-orbital space tourism missions, in the frame of the Space Renaissance (SR) Italia Space Tourism Program. -
Chronology of KSC and KSC Related Events for 1982
https://ntrs.nasa.gov/search.jsp?R=19840014423 2020-03-20T23:55:52+00:00Z KHR-7 March 1, 1984 Chronology of KSC and KSC Related Events for 1982 - National Aeronautics and Space Adml nis tra ti 3n John F. Kennedy Space Center KLC FOAM 16-12 IREV. 0 761 FOREWORD Orbiter Columbia was launched three times in 1982. STS-3 and STS-4 were develqpment flights; STS-5 was the first operational flight carrying a crew of four and deploying the first t@o shuttle-borne satellites, SBS-C and ANIK-C. A number of communications satellites, using expendable vehicles, successfully launched. Major changes in contracting were underway with procurement activity aimed at consolidating support services performed by 14 different contractors into a single base operations contract. EG&G, Inc., a Massachussetts-based firm, was selected as the base operations contractor. This Chronology records events during 1982 in which the John F. Kennedy Space Center had prominent involvement and interest. Materials were selected from Aviation Week and Space Technology, Defense Daily, Miami Herald, Sentinel Star (Orlando), Today (Cocoa), Spaceport News (KSC), NASA News Releases, and other sources. The document, as part of the KSC history program, provides a reference source for historians and other researchers. Arrangement is by month; items are by date of the published sources. Actual date of the event may be indicated in parenthesis when the article itself does not make that information explicit. Research and documentation were accomplished by Ken Nail, Jr., New World Services, Inc., Archivist; with the assistance of Elaine Liston. Address comments on the Chronology to Informatioq Services Section (SI-SAT-52), John F. -
Numerical Optimization and Wind-Tunnel Testing of Low
Numerical Optimization and WindTunnel Testing of Low ReynoldsNumber Airfoils y Th Lutz W Wurz and S Wagner University of Stuttgart D Stuttgart Germany Abstract A numerical optimization to ol has been applied to the design of low Reynolds number airfoils Re The aero dynamic mo del is based on the Eppler co de with ma jor extensions A new robust mo del for the calculation of short n transitional separation bubbles was implemented along with an e transition criterion and Drelas turbulent b oundarylayer pro cedure with a mo died shap efactor relation The metho d was coupled with a commercial hybrid optimizer and applied to p erform unconstrained high degree of freedom optimizations with ob jective to minimize the drag for a sp ecied lift range One resulting airfoil was tested in the Mo del WindTunnel MWT of the institute and compared to the classical RG airfoil In order to allow a realistic recalculation of exp eriments conducted in the MWT the limiting nfactor was evaluated for this facility A sp ecial airfoil featuring an extensive instability zone was designed for this purp ose The investigation was supplemented by detailed measurements of the turbulence level Toget more insight in design guidelines for very low Reynolds numb er airfoils the inuence of variations of the leadingedge geometry on the aero dynamic characteristics was studied exp erimentally at Re Intro duction For the Reynoldsnumber regime of aircraft wingsections Re sophisticated di rect and inverse metho ds for airfoil analysis and design are available -
1 Dr. Franklin R. Chang Díaz Chairman and CEO, Ad Astra Rocket Company Franklin Chang Díaz Was Born April 5, 1950, in San
Dr. Franklin R. Chang Díaz Chairman and CEO, Ad Astra Rocket Company Franklin Chang Díaz was born April 5, 1950, in San José, Costa Rica, to the late Mr. Ramón A. Chang Morales and Mrs. María Eugenia Díaz Romero. At the age of 18, having completed his secondary education at Colegio de La Salle in Costa Rica, he left his family for the United States to pursue his dream of becoming a rocket scientist and an astronaut. Arriving in Hartford Connecticut in the Dr. Franklin R. Chang Díaz fall of 1968 with $50 dollars in his pocket and speaking no English, he stayed with relatives, enrolled at Hartford Public High School where he learned English and graduated again in the spring of 1969. That year he also earned a scholarship to the University of Connecticut. While his formal college training led him to a BS in Mechanical Engineering, his four years as a student research assistant at the university’s physics laboratories provided him with his early skills as an experimental physicist. Engineering and physics were his passion but also the correct skill mix for his chosen career in space. However, two important events affected his path after graduation: the early cancellation of the Apollo Moon program, which left thousands of space engineers out of work, eliminating opportunities in that field and the global energy crisis, resulting from the I973 oil embargo by the Organization of Petroleum Exporting Countries (OPEC). The latter provided a boost to new research in energy. Confident that things would ultimately change at NASA, he entered graduate school at MIT in the field of plasma physics and controlled fusion. -
The SKYLON Spaceplane
The SKYLON Spaceplane Borg K.⇤ and Matula E.⇤ University of Colorado, Boulder, CO, 80309, USA This report outlines the major technical aspects of the SKYLON spaceplane as a final project for the ASEN 5053 class. The SKYLON spaceplane is designed as a single stage to orbit vehicle capable of lifting 15 mT to LEO from a 5.5 km runway and returning to land at the same location. It is powered by a unique engine design that combines an air- breathing and rocket mode into a single engine. This is achieved through the use of a novel lightweight heat exchanger that has been demonstrated on a reduced scale. The program has received funding from the UK government and ESA to build a full scale prototype of the engine as it’s next step. The project is technically feasible but will need to overcome some manufacturing issues and high start-up costs. This report is not intended for publication or commercial use. Nomenclature SSTO Single Stage To Orbit REL Reaction Engines Ltd UK United Kingdom LEO Low Earth Orbit SABRE Synergetic Air-Breathing Rocket Engine SOMA SKYLON Orbital Maneuvering Assembly HOTOL Horizontal Take-O↵and Landing NASP National Aerospace Program GT OW Gross Take-O↵Weight MECO Main Engine Cut-O↵ LACE Liquid Air Cooled Engine RCS Reaction Control System MLI Multi-Layer Insulation mT Tonne I. Introduction The SKYLON spaceplane is a single stage to orbit concept vehicle being developed by Reaction Engines Ltd in the United Kingdom. It is designed to take o↵and land on a runway delivering 15 mT of payload into LEO, in the current D-1 configuration. -
Download the BHPA Training Guide
VERSION 1.7 JOE SCHOFIELD, EDITOR body, and it has for many years been recognised and respected by the Fédération Aeronautique Internationale, the Royal Aero Club and the Civil Aviation Authority. The BHPA runs, with the help of a small number of paid staff, a pilot rating scheme, airworthiness schemes for the aircraft we fly, a school registration scheme, an instructor assessment and rating scheme and training courses for instructors and coaches. Within your membership fee is also provided third party insurance and, for full annual or three-month training members, a monthly subscription to this highly-regarded magazine. The Elementary Pilot Training Guide exists to answer all those basic questions you have such as: ‘Is it difficult to learn to fly?' and ‘Will it take me long to learn?' In answer to those two questions, I should say that it is no more difficult to learn to fly than to learn to drive a car; probably somewhat easier. We were all beginners once and are well aware that the main requirement, if you want much more than a ‘taster', is commitment. Keep at it and you will succeed. In answer to the second question I can only say that in spite of our best efforts we still cannot control the weather, and that, no matter how long you continue to fly for, you will never stop learning. Welcome to free flying and to the BHPA’s Elementary Pilot Training Guide, You are about to enter a world where you will regularly enjoy sights and designed to help new pilots under training to progress to their first milestone - experiences which only a few people ever witness. -
Comparison of Wind Tunnel Airfoil Performance Data with Wind Turbine Blade Data
SERI/TP-254·3799 UC Category: 261 DE90000343 Comparison of Wind Tunnel Airfoil Performance Data with Wind Turbine Blade Data C. P. Butterfield G. N. Scott W. Musial July 1990 presented at the 25th lntersociety Energy Conversion Engineering Conference (sponsored by American Institute of Aeronautics and Astronautics) Reno, Nevada 12-17 August 1990 Prepared under Task No. WE011 001 Solar Energy Research Institute A Division of Midwest Research Institute 1617 Cole Boulevard Golden, Colorado 80401-3393 Prepared for the U.S. Department of Energy Contract No. DE-AC02-83CH1 0093 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, com pleteness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily con stitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Printed in the United States of America Available from: National Technical Information Service U.S. Department of Commerce 5285 Port Royal Road Springfield, VA 22161 Price: Microfiche A01 Printed Copy A02 Codes are used for pricing all publications. -
Introduction to Aerodynamics < 1.7. Dimensional Analysis > Physical
Introduction to Aerodynamics < 1.7. Dimensional analysis > Physical parameters Q: What physical quantities influence forces and moments? V A l Aerodynamics 2015 fall - 1 - Introduction to Aerodynamics < 1.7. Dimensional analysis > Physical parameters Physical quantities to be considered Parameter Symbol units Lift L' MLT-2 Angle of attack α - -1 Freestream velocity V∞ LT -3 Freestream density ρ∞ ML -1 -1 Freestream viscosity μ∞ ML T -1 Freestream speed of sound a∞ LT Size of body (e.g. chord) c L Generally, resultant aerodynamic force: R = f(ρ∞, V∞, c, μ∞, a∞) (1) Aerodynamics 2015 fall - 2 - Introduction to Aerodynamics < 1.7. Dimensional analysis > The Buckingham PI Theorem The relation with N physical variables f1 ( p1 , p2 , p3 , … , pN ) = 0 can be expressed as f 2( P1 , P2 , ... , PN-K ) = 0 where K is the No. of fundamental dimensions Then P1 =f3 ( p1 , p2 , … , pK , pK+1 ) P2 =f4 ( p1 , p2 , … , pK , pK+2 ) …. PN-K =f ( p1 , p2 , … , pK , pN ) Aerodynamics 2015 fall - 3 - < 1.7. Dimensional analysis > The Buckingham PI Theorem Example) Aerodynamics 2015 fall - 4 - < 1.7. Dimensional analysis > The Buckingham PI Theorem Example) Aerodynamics 2015 fall - 5 - < 1.7. Dimensional analysis > The Buckingham PI Theorem Aerodynamics 2015 fall - 6 - < 1.7. Dimensional analysis > The Buckingham PI Theorem Through similar procedure Aerodynamics 2015 fall - 7 - Introduction to Aerodynamics < 1.7. Dimensional analysis > Dimensionless form Aerodynamics 2015 fall - 8 - Introduction to Aerodynamics < 1.8. Flow similarity > Dynamic similarity Two different flows are dynamically similar if • Streamline patterns are similar • Velocity, pressure, temperature distributions are same • Force coefficients are same Criteria • Geometrically similar • Similarity parameters (Re, M) are same Aerodynamics 2015 fall - 9 - Introduction to Aerodynamics < 1.8. -
Solar Orbiter Assessment Study and Model Payload
Solar Orbiter assessment study and model payload N.Rando(1), L.Gerlach(2), G.Janin(4), B.Johlander(1), A.Jeanes(1), A.Lyngvi(1), R.Marsden(3), A.Owens(1), U.Telljohann(1), D.Lumb(1) and T.Peacock(1). (1) Science Payload & Advanced Concepts Office, (2) Electrical Engineering Department, (3) Research and Scientific Support Department, European Space Agency, ESTEC, Postbus 299, NL-2200AG, Noordwijk, The Netherlands (4) Mission Analysis Office, European Space Agency, ESOC, Darmstadt, Germany ABSTRACT The Solar Orbiter mission is presently in assessment phase by the Science Payload and Advanced Concepts Office of the European Space Agency. The mission is confirmed in the Cosmic Vision programme, with the objective of a launch in October 2013 and no later than May 2015. The Solar Orbiter mission incorporates both a near-Sun (~0.22 AU) and a high-latitude (~ 35 deg) phase, posing new challenges in terms of protection from the intense solar radiation and related spacecraft thermal control, to remain compatible with the programmatic constraints of a medium class mission. This paper provides an overview of the assessment study activities, with specific emphasis on the definition of the model payload and its accommodation in the spacecraft. The main results of the industrial activities conducted with Alcatel Space and EADS-Astrium are summarized. Keywords: Solar physics, space weather, instrumentation, mission assessment, Solar Orbiter 1. INTRODUCTION The Solar Orbiter mission was first discussed at the Tenerife “Crossroads” workshop in 1998, in the framework of the ESA Solar Physics Planning Group. The mission was submitted to ESA in 2000 and then selected by ESA’s Science Programme Committee in October 2000 to be implemented as a flexi-mission, with a launch envisaged in the 2008- 2013 timeframe (after the BepiColombo mission to Mercury) [1]. -
Aerodynamic Force Measurement on an Icing Airfoil
AerE 344: Undergraduate Aerodynamics and Propulsion Laboratory Lab Instructions Lab #13: Aerodynamic Force Measurement on an Icing Airfoil Instructor: Dr. Hui Hu Department of Aerospace Engineering Iowa State University Office: Room 2251, Howe Hall Tel:515-294-0094 Email:[email protected] Lab #13: Aerodynamic Force Measurement on an Icing Airfoil Objective: The objective of this lab is to measure the aerodynamic forces acting on an airfoil in a wind tunnel using a direct force balance. The forces will be measured on an airfoil before and after the accretion of ice to illustrate the effect of icing on the performance of aerodynamic bodies. The experiment components: The experiments will be performed in the ISU-UTAS Icing Research Tunnel, a closed-circuit refrigerated wind tunnel located in the Aerospace Engineering Department of Iowa State University. The tunnel has a test section with a 16 in 16 in cross section and all the walls of the test section optically transparent. The wind tunnel has a contraction section upstream the test section with a spray system that produces water droplets with the 10–100 um mean droplet diameters and water mass concentrations of 0–10 g/m3. The tunnel is refrigerated by a Vilter 340 system capable of achieving operating air temperatures below -20 C. The freestream velocity of the tunnel can set up to ~50 m/s. Figure 1 shows the calibration information for the tunnel, relating the freestream velocity to the motor frequency setting. Figure 1. Wind tunnel airspeed versus motor frequency setting. The airfoil model for the lab is a finite wing NACA 0012 with a chord length of 6 inches and a span of 14.5 inches.