"lfk f; \"A Lt. - Airborne Systems

More documents

Recommendations

Info

! , Trj. Conical. The canopy is co,stru::tod as a regular sides by joining gores pyramid a1d two frustums of of a sflape i Ilustratec The tri-con ical parachute is e8suf1.;bly sim pie and ecunumical to COIl WI!I t. serves applications wh ieh are typical for flat ci rClllar par::chutes with better stability anddrag performance. Data J.,r spec fie tri.conical pa-achLite and load config. urations we isted below. These were developed as main descent parachu:es for nid. ai r retrievel systerrs used in ccnju.nction with a trailing engagement parachute. h 1 /72 --1 I \ fIr GO RE LAYOUT 112 j .- 113 1J1 \ / CONSTRUCTION SCHEMA TIC I- 'h2 !I , ;t \ Vh3 Size Q:ne Canopy No. of li ne Str Line Parachute Payload Payload Max. Rate of Spcial Ref. Angles (olflonJ Gores (nylon) Length Weight Weight Deploy- Descent Conditions ,ft Ibs 1/0 Ibs 100 Velocity 79, 1'1/ A 38: 71. RPVs 1800 125 kts :;eeec 2.25 100 N/A 400 117 RPVs 29JO 100 kts REefed 2:1
Flat Extended Skirt. -he canopy is charccterizcd by a flat polygonal surface to whicn is added an extension in the form of an annular flat ring cf a widtl designated as a percent of the flat surface diameter illustrated by the construction schematic. The flat extension is achieved by shaping the gore 35 indicated. A 10 percent extensi:Jn has proven e commcn choice although 12. 5 and 14 percent axtensions have bee,. tried. Flat extended skirt can8j:ies are more complex to design but with proper patterns they arE no more comj:licated to form and assemble than the Iat circular. Fx lended sk irt par8chu es have slightly higher drag, longer fillng times and lower opening forces than flat circL'lar parachi.tes of Iden ical o' Data for specific flat Extended skirt parachute and load configurations ar!: list d b!:low. For 10% Extension: h2 1 D c (by definition) h, h2 2hl a1 a2 c: 90 (180 /N) e1 = 2 h1 tan 080 IN) ij c: 0. 8 e1 leiD 84 to 1. 180 GORE LAYOUT tl -- 1;' CONSTRUCTION SCHEMA TIC r- /1' I + \\ ... =::.::- .." ..:." ;:. . ' :,c; IIlFLA TED PROFILE' I I ,I/ i I/! ,II /I r 1/ I!/ I II lii I ' ! !ff I I I I ;I I Ii Deignation Canopy No. of Une Str. Uns Parachute Payload Payload Max. Rate of Remarks Ref. and Size (nylon) Gores (nylon) Length Weight Wei ght Deploy. Descnt oz/yd Ibs IDo Ibs Ibs Velocity fps 1 1 375 13. Paratro 1Js 2:x 300 1.1: 34. 750 20. .;' c. . ::psule Reefed 700 490 kts Sect (B-70) '-1
Page 1 and 2:
AFFDL- TR-78-151 IRVIN INDUSTRIES I
Page 3 and 4:
UNCLASSIFIED SECURITY CLASSIFICATIO
Page 5 and 6:
. . . . . . . . . . . . CHAPTE R IN
Page 7 and 8:
. . . . . . . . . . . . . CHAPTER 4
Page 9 and 10:
CHAPTE R 6 (Cont) RELIABILITY Typic
Page 11 and 12:
GURE 1.2 1.4 1.5 1 10 1-1 1 12 1 13
Page 13 and 14:
FIGURE 3.40 3.41 3.42 3.43 3.44 3.4
Page 15 and 16:
FIGURE 6AD 10A 10B . . . . . . . .
Page 17 and 18:
LIST OF ILLUSTRATIONS (Continued) U
Page 19 and 20:
FIGURE 7.45 7.4 7 7.48 7.49 LIST OF
Page 21 and 22:
i'Jz dl.'lI/b"W"O","'"' J! L E 101
Page 23 and 24:
GDA LIST Of SYM BO LS - Area (cross
Page 25 and 26:
ob Mass of Body I ncluded Mass Any
Page 27 and 28:
X-r r/c SYMBOLS (Continued) - Numbe
Page 29 and 30:
Inertial Elasticity Canopy ventilat
Page 32 and 33:
INTRODUCTION Recovery is a term pop
Page 34 and 35:
deceleration stages were possible b
Page 36 and 37:
TABLE B WEIGHTS AND MEASURES Length
Page 38 and 39:
Z, (- y% T AS LE C PROPERTIES OF EA
Page 40:
TABLE D TYPICAL GROUND WIND VELOCIT
Page 43 and 44:
VEHICLE RECOVERY Vehicle!; that hav
Page 45 and 46:
. . Recovery was initiated with pne
Page 47 and 48:
vehicle enters the continuum flow a
Page 49 and 50:
They "re scheduled to arrive in Dec
Page 51 and 52:
SeparB riot! Entrv Figure 1. T=O Fi
Page 53 and 54:
TABLE 1.1 TECHNICAL DATA OF THE MER
Page 55 and 56:
as lsed 0, the Mercury C:8psule. AI
Page 57 and 58:
Three Main rachut:s Fxtracted by Mo
Page 59 and 60:
Back-up Drogue Chute PIV Steel Cabl
Page 61 and 62:
95 Suspension Lines Number of parac
Page 63 and 64:
Reference 32 suggests certain appli
Page 65 and 66:
chute and slightly decreases the ve
Page 67 and 68:
TABLE 1. S. NAVY PERSONNEL EMERGENC
Page 69 and 70:
pilot chute extraction, independent
Page 71 and 72:
Canopy Inflated Survival Kit Releas
Page 73 and 74:
58 Encapsulated Seat. The 8-58 airc
Page 75 and 76: 300 tOO 'l1j V- C- Stabilization Br
Page 77 and 78: TABLE 1.8 AIRCRAFT USED FOR AI'DROP
Page 79 and 80: These requirements have resulted in
Page 81 and 82: The advantages of the LAPES airdrop
Page 83 and 84: Con:ainer, Platform Piatform Weight
Page 85 and 86: defeated the low cost aspect. ::ffo
Page 87 and 88: , , Figure 26 10. Personnel Troop P
Page 89 and 90: Design TABLE 1 13 T. 10 PARACHUTE A
Page 91 and 92: In operation, the a rcraft pilot ma
Page 93 and 94: ment bag should closely contain the
Page 95 and 96: ' TABLE 1. PARACHUTE SYSTEMS FOR SP
Page 97 and 98: ORDNANCE The application of aerodyn
Page 99 and 100: Figure 33 Mark 82 AID Inflation 0 ;
Page 101 and 102: AERIAL PICKUP Aerial pickup is one
Page 103 and 104: Figure 34 Trapaze/Helicopter (HH-53
Page 105 and 106: Main Parachute as Suspension Lines
Page 107 and 108: Other Mid.air Retrieval Concepts. B
Page 109 and 110: apid turn rates. and minimal weight
Page 111 and 112: door of a cradle rrounted platf:rm
Page 114 and 115: CHAPTER 2 DEPLOYABLE AERODYNAMIC DE
Page 116 and 117: TABLE . 2. SOLID TEXTILE PARACHUTES
Page 118 and 119: Type Taja, TU Slots, etc. LeMoigne
Page 120 and 121: BIAS il BLOCK Figure 2. Flet Patter
Page 122 and 123: Specific; rdcrcncc data are listed
Page 124 and 125: .( Con ical. The ca'loPY is constru
Page 128 and 129: Full Extended Skirt. The canopy is
Page 130 and 131: Guide Surface, Ribbed. The canopy i
Page 132 and 133: Panels ROOF PATTRN X/I1, .70 Y/X 60
Page 134 and 135: - = Cross. The cross parachute, a F
Page 136 and 137: Slotted Canopy Parachutes Flat Circ
Page 138 and 139: Hemisflo. The constructed shape of
Page 140 and 141: --- Ringsail. This parachute design
Page 142 and 143: Rotating Parachutes Rotation Df par
Page 144 and 145: Low G!ide Parachutes gliding paracr
Page 146 and 147: '" Parawing, Single Keel. Tfe canep
Page 148 and 149: Parafoil. The canopy is cOlstructed
Page 150 and 151: DECELERATORS OTHER THAN PARACHUTES
Page 152 and 153: CHAPTER 3 COMPONENTS AN SU BSYSTEMS
Page 154 and 155: drogue and starts the timer which o
Page 156 and 157: alloth r is the pyrotechnic delay t
Page 158 and 159: that an'! Ai r- Iaunched from a car
Page 160 and 161: Catapult/Telescoping Thruster. Tele
Page 162 and 163: Inflation Phase Actuators. Pym/mech
Page 164 and 165: \()\ \, '.. , i. ,, / " .. $) -' .,
Page 166 and 167: Figure 18 Cargo Parachute Release 5
Page 168 and 169: Figure 21 AlP 28S-2 Personnel Harne
Page 170 and 171: wiDensi on Linlis 'I, Gre;ur.d t_C
Page 172 and 173: Bridles. A bridle IS :J connectirg
Page 174 and 175: Sus,GfinsiQn Line Sigh -Sleeve Mout
Page 176 and 177:
Figure 38 Representative Cargo Harn
Page 178 and 179:
, ':"' -." (, ::. :: - , :..' ' , .
Page 180 and 181:
sharp edged corner knifes into the
Page 182:
compartments or in ex ernal fairing
Page 185 and 186:
from the air , and hydrogen from wa
Page 187 and 188:
ather tran measuring its cross-sect
Page 189 and 190:
tion potential. The first !;::lunll
Page 191 and 192:
(%) TABLE 4. (cont'd) MECHANICAL PR
Page 193 and 194:
'R 1000 800 600 400 200 1000 800 60
Page 195 and 196:
For a hypothetical fabric composed
Page 197 and 198:
TABLE 4. NYLON SEWING THREADS Data
Page 199 and 200:
TABLE 4. THREAD , NYLON , NON MELTI
Page 201 and 202:
Type Iia Iii I'la -1!L VII VIII XII
Page 203 and 204:
Narrow Woven Fabrics. The strength
Page 205 and 206:
111 Yarn: Color: Ident Use: Min. Br
Page 207 and 208:
TABLE 4. 19 POLYESTER WEBBING, IMPR
Page 209 and 210:
TABLE 4. 23 (Continued) Dqta horn M
Page 211 and 212:
(%) TABLE 4. RAYON TAPE AND WEBBING
Page 213 and 214:
(%) TABLE 4 a from MI ranee 260 Cia
Page 215 and 216:
Type III Weave: Finish: Use: TABLE
Page 217 and 218:
TABLE 4. NYLON DUCK Data from MI L-
Page 219 and 220:
yarns. In order to achieve low air
Page 221 and 222:
!. Entrapped air in the cells contr
Page 223 and 224:
method of joining textiles. Strong,
Page 225 and 226:
However. if tile strength of the cl
Page 227 and 228:
;: =::~~~~~~~~~ ::: ::.. "':;.. - -
Page 229 and 230:
_._--_.- -------- ---- ------ -----
Page 231 and 232:
--- -".. , ;;;" / . ----- ------- -
Page 233 and 234:
width sec ion dimensions based on t
Page 235 and 236:
and length depend on the type parac
Page 237 and 238:
has become cOr/mon practice to x-ra
Page 239 and 240:
TEST METHODS AND CAPABILITIES Selec
Page 241 and 242:
cescent, drift terden::es, and ethe
Page 243 and 244:
supported at other bases including
Page 245 and 246:
stant of release, the free-flving p
Page 247 and 248:
Figure 5.7 for the same type in wat
Page 249 and 250:
Function and Performance Checks. Re
Page 251 and 252:
Laboratorv apparatus has been assem
Page 253 and 254:
The coeff icient of sl idin g frict
Page 255 and 256:
White Sands Misslfe Range Texas Hol
Page 257 and 258:
TABLE 5. DECELERATOR TESTING, PRINC
Page 259 and 260:
allistics tEst tracks and special p
Page 261 and 262:
atmospheric wind tunnel Tre test se
Page 263 and 264:
i ng and launching models wh de the
Page 265 and 266:
TEST VEHICLES In a free flght test
Page 267 and 268:
Load-Searing Platform Paper Honeyco
Page 269 and 270:
338 with an operation has been obta
Page 271 and 272:
1, Central part of housing 2. Upper
Page 273 and 274:
to the appl ied stifTl lus. In gene
Page 275 and 276:
:ll€thod available is provided by
Page 277 and 278:
The different deployrrent methoDs f
Page 279 and 280:
a: 30 .. 60 t: 20 18 10 AV6r6ge New
Page 281 and 282:
.q:.Q 1.0 002 -- ,. ,. '0. 1.. P (C
Page 283 and 284:
2000 1000 Lbs Force Snatch Farce bp
Page 285 and 286:
,\ )\' ""' Ij, !i!t: a) Opening of
Page 287 and 288:
1.0 HORIZONiAL TRAJECTORY ft H. S.
Page 289 and 290:
The Inflation 0 " clustered canopie
Page 291 and 292:
"' area across the canopy s the gov
Page 293 and 294:
j '" . =: qlide) and ringsail desig
Page 295 and 296:
Canopy Type C-9 Canopy Con fig A Sn
Page 297 and 298:
si'" 9 Configuration: 9 ConfiglJrti
Page 299 and 300:
::. ::". :::. , " .:.' I I Ii 1! l4
Page 301 and 302:
Figure 6, j; 5"O 540 u. :z 12 o 1.
Page 303 and 304:
Fioure 27 Opening Force- Time Histo
Page 305 and 306:
'" Axial Force Coefficient I t is c
Page 307 and 308:
CAo 35 OM-O. a, Degrees Angle of At
Page 309 and 310:
. /;. ;. - .'; , . .\. . ~~~ : ;:.
Page 311 and 312:
LID .. .. Hlen Gliding: W"'W FC08(J
Page 313 and 314:
Proiect System Descent Parachute We
Page 315 and 316:
;J = I .. !-- 1// 10. i- ,\;y q.. C
Page 317 and 318:
-.rQ W/. '" 300 '" 2.35 PSF TURN RA
Page 319 and 320:
db == p' Mgr ,, ". .. al Velocity D
Page 321 and 322:
;. ti c: 1). 0.4 C-' -.- --- .. - '
Page 323 and 324:
TABLE 6.9 MID-AIR RETRIEVAL SYSTEM
Page 325 and 326:
three dimensional body ha'Je been s
Page 327 and 328:
;'1 Fig. 6. 55. For a given Mach nU
Page 329 and 330:
CDo 0.4 'siD LJ 0,. 0 1. Ipd 4.70 0
Page 331 and 332:
-- I- l- -2 /:INCR c)-200 lo/in Nyl
Page 333 and 334:
(J f. :' ' - ... . -- ' ;,' ; .; '-
Page 335 and 336:
p. 'e- - - - - - - - - - - - - ven)
Page 337 and 338:
2 0. 0.4 0. REEFING RATIO D,ID Figu
Page 339 and 340:
lengths during deplovment and openi
Page 341 and 342:
(CoSJ o varies with in the same way
Page 343 and 344:
Flar Circular Conical 10'1 Extended
Page 345 and 346:
-2.4 1.6 1.2 -0.4 0.4 0.4 a! Model
Page 347 and 348:
flralleJ and the (-- to X Axis Cent
Page 349 and 350:
a) Tap View of MARS Axis SV5tems OI
Page 351 and 352:
- ----- --- Figure 6. 48 Ft Ribbon
Page 353 and 354:
""' . it -; 1. " _._,.- 0.4 measure
Page 355 and 356:
:9 0. 20. 0.40 Q; O. 10 -0_05 0. -0
Page 357 and 358:
ing points of poIY'TIers , their sp
Page 359 and 360:
2500 (A) Ascent 2000 1500 100 500 I
Page 361 and 362:
Water Impact (Spla$hdown) In a wate
Page 363 and 364:
where is the instantaneous r:eight
Page 365 and 366:
Bag 'Material.NvllJn Cloth! Narsyn
Page 367 and 368:
.. , , ; . '(. ., ' .. . ! '.: \ '
Page 369 and 370:
Human error is more difficult to de
Page 371 and 372:
TABLE 14 8-YEAR SUPPL Y/EQUIPMENT D
Page 373 and 374:
Scale Camp ressibillty Factor Fluid
Page 375 and 376:
"' been unlocked. :he bag offers ve
Page 377 and 378:
() = Drogue Parachute Angle of Atta
Page 379 and 380:
270 180 o - 120 Pe rcent Per See 6
Page 381 and 382:
€ = PI .. velocity of mass added
Page 383 and 384:
e f312JK PICoSJ1I2 (C (CDS! n((CD S
Page 385 and 386:
D fDrii(! Coeffcient For Ul1iform M
Page 387 and 388:
:: . 0. .. Aluminum Canopies fDp 6.
Page 389 and 390:
axial and radial acceleration of th
Page 391 and 392:
Iy in Figs. 7. 14b and c. Inflating
Page 393 and 394:
p, '" '" inflowin9 air is subjected
Page 395 and 396:
Gore Dimensions Warp or Fil Inflate
Page 397 and 398:
The posi tive internal differential
Page 399 and 400:
d) View of Plane A- el View of Plan
Page 401 and 402:
area '" (R/ /2Jf2(J-sin := g., The
Page 403 and 404:
COMPUTE ,,, ASSUME TRIAL CONVERGENC
Page 405 and 406:
Note: ABterisk denote, inPt/f bvana
Page 407 and 408:
at a) Canopy Tension Approach Tsnoe
Page 409 and 410:
_-- "" - .. -.. (fnviscid) Wake Qf
Page 411 and 412:
easonable to use Reynolds and Nusse
Page 413 and 414:
Figure 7. ReD x 10 t: 3. 'V 4.42 .
Page 415 and 416:
= 10. iFf: = 1. 86 x 10 Deg. Deg ,!
Page 417 and 418:
If/db Figure 34 Wake Coefficients v
Page 419 and 420:
A prima ry and obvious limitation o
Page 421 and 422:
tive drag stabilizer because of ii:
Page 423 and 424:
tVa (min- (min. ) . '" M/M .4 . Mr!
Page 425 and 426:
Angle of Atteck Deg S R8 &12 See In
Page 427 and 428:
'" 0.4 Ex"eriment iSSinger Nt) Adju
Page 429 and 430:
Jt (See XI0) e IGz J (3) (4) FPS (6
Page 431 and 432:
point the discharge or tices open.
Page 433 and 434:
FPS K. 10. f( 60 80 100 - Lb Sec/Lb
Page 435 and 436:
they are analogm.. s to the inacleq
Page 437 and 438:
"" usr=d in th 8 computations. The
Page 439 and 440:
desc-ibed in References 285 and 552
Page 441 and 442:
pre-seleCting the final confidence-
Page 443 and 444:
g., system is to be identified. Thi
Page 445 and 446:
'/, too heavy., too bulky or too lo
Page 447 and 448:
t. 14 -- .: Jlten d ed SkI Ffar Cir
Page 449 and 450:
Surface af Revolution: ; -1 Gore La
Page 451 and 452:
TABLE 8.3 SYSTEM A OPENING FORCES (
Page 453 and 454:
'" '" '" "" 156 '" 3 D,IDo 10 (reef
Page 455 and 456:
TABLE 8. RECOMMENDED PARACHUTE DeSI
Page 457 and 458:
adial distance a, ong the surf"ce f
Page 459 and 460:
TABLE 8. STEERABLE PARACHUTE COMPAR
Page 461 and 462:
Portion of canopy Sockiri up Fourth
Page 463 and 464:
followed to create a sequence of ca
Page 465 and 466:
ond /db =" 8. 3/5 7 D /CDt; Appra,s
Page 467 and 468:
I'ne rraterfal required is 18 1583
Page 469 and 470:
Unlock Action Riser Closure Flaps (
Page 471 and 472:
'" "" "" = . where (see Page 344) p
Page 473 and 474:
'), w m.rif 305 Mo' ar weight, m 18
Page 475 and 476:
ecause the le1gth of riser branches
Page 478 and 479:
( .,." ' 727J . ' LIST OF REFEi=ENC
Page 480 and 481:
104 LIST OF REFERENCES (Continued!
Page 482 and 483:
138 141 144 146 147 148 149 150 151
Page 484 and 485:
206 207 208 209 210 Z), 212 213 214
Page 486 and 487:
290 291' 293 294 295 296 297 298 29
Page 488 and 489:
353 354 355 356 357 358 359 364 365
Page 490 and 491:
411 412 413 414 415 416 417 418 419
Page 492 and 493:
463 464 465 466 467 468 469 470 471
Page 494 and 495:
..'- 524 525 526 527 533 534 535 53
Page 496 and 497:
Acceleration Measurement, 232 Actua
Page 498 and 499:
Pressure Distribution , 227 Strain,
show all

"lfk f; \"A Lt. - Airborne Systems

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?